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ECM upgrade (1227730) for stock 2.8 by Darth Fiero
Started on: 01-09-2007 02:26 PM
Replies: 1066 (85707 views)
Last post by: turbo86se on 12-18-2017 10:19 AM
rjblaze
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Report this Post01-13-2009 02:45 PM Click Here to See the Profile for rjblazeClick Here to Email rjblazeSend a Private Message to rjblazeEdit/Delete MessageReply w/QuoteDirect Link to This Post

As far as I know, the fan should come on during the ALDL (A/B short) test. Every GM vehicle I own does this.


HEY! I OWN PAGE 22 !!!!!

[This message has been edited by rjblaze (edited 01-13-2009).]

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americasfuture2k
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Report this Post01-13-2009 10:26 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

im pretty sure my fan came on when i shorted A & B on my aldl on my last ratsnest harness merlot made. and i swear i read somewhere when shorting the terminals, the fan comes on to tell you your doing it right.

------------------
First LX9 Fiero GT, 1987
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
My Fiero Fuel Economy
Videos of My GT
Google Videos of My GT

[This message has been edited by americasfuture2k (edited 01-13-2009).]

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Darth Fiero
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Report this Post01-13-2009 10:43 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by americasfuture2k:

im pretty sure my fan came on when i shorted A & B on my aldl on my last ratsnest harness merlot made. and i swear i read somewhere when shorting the terminals, the fan comes on to tell you your doing it right.


Shorting A and B terminals together on the ALDL connector puts the ECM into diagnostic mode. On most OBD-1 cars with computer-controlled cooling fans, this turns the fan(s) on and does some other things with various outputs (as well as flashes the trouble codes thru the check engine light if the engine is not running). If your fan is not coming on when you do this, then you probably don't have something wired up correctly or there is still an electrical problem.

From what you have been describing about the problems you are having, I would have to say something isn't right in the wiring. OR at some point something wasn't right with the wiring and the ECM got fried (and maybe some other components). You may have since fixed the wiring issues, but now you might have a fried component or two in there. Hard to say and I'm just guessing based on what you've posted. Did you ever get the no-spark issue repaired?

-ryan

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americasfuture2k
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Report this Post01-13-2009 10:47 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

i think my ecm is toast. but it flashes code 12.

i made some more corrections to the harness and made it match the 7730 schematic more. and now im not getting spark. im just gonna over time till it gets warm again, replace all the sensors and get a new ECM. and go over my harness again and make sure everything is correct.

------------------
First LX9 Fiero GT, 1987
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
My Fiero Fuel Economy
Videos of My GT
Google Videos of My GT

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flimbob
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Report this Post01-15-2009 04:53 PM Click Here to See the Profile for flimbobSend a Private Message to flimbobEdit/Delete MessageReply w/QuoteDirect Link to This Post

Anyone know which pin/pins are needed?

http://cgi.ebay.com/Metri-P...sidZp1742.m153.l1262

or

http://cgi.ebay.com/Metri-P...sidZp1742.m153.l1262

or

http://cgi.ebay.com/Metri-P...sidZp1742.m153.l1262

or

http://cgi.ebay.com/Metri-P...sidZp1742.m153.l1262

or

http://cgi.ebay.com/Metri-P...sidZp1742.m153.l1262

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americasfuture2k
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Report this Post01-15-2009 05:11 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

doesnt look like any of those are what the ECM needs on the connectors.

abd this....
http://cgi.ebay.com/Metri-P...sidZp1742.m153.l1262
is what are on the C203.

------------------
First LX9 Fiero GT, 1987
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
My Fiero Fuel Economy
Videos of My GT
Google Videos of My GT

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flimbob
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Report this Post01-15-2009 05:25 PM Click Here to See the Profile for flimbobSend a Private Message to flimbobEdit/Delete MessageReply w/QuoteDirect Link to This Post

How about these:

http://cgi.ebay.com/ebaymot...0165453620QQtcZphoto

or

http://cgi.ebay.com/ebaymot...0165453274QQtcZphoto

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americasfuture2k
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Report this Post01-15-2009 05:30 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

nope. weather pack are like the TPS, IAC, and MAP sensor connectors. im not sure what the ECM ones are called. maybe ECM type pins or something along those lines.

EDIT: you can look for the ecm connector pin removal tool kit and it comes with so many of the correct style female pins and the pin removal tool. its hexagonal shaped. and i think it even has the weatherpack terminal removal tool too.

------------------
First LX9 Fiero GT, 1987
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
My Fiero Fuel Economy
Videos of My GT
Google Videos of My GT

[This message has been edited by americasfuture2k (edited 01-15-2009).]

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flimbob
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Report this Post01-15-2009 10:03 PM Click Here to See the Profile for flimbobSend a Private Message to flimbobEdit/Delete MessageReply w/QuoteDirect Link to This Post

Does this look like it?



It says it's a gm ecm pin made by Dorman, part #85328.

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mtownfiero
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Report this Post01-16-2009 12:10 AM Click Here to See the Profile for mtownfieroClick Here to Email mtownfieroSend a Private Message to mtownfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

can anyone tell me how to do the timing using the 7730 and DIS? thanks, andrew

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Report this Post01-16-2009 12:45 AM Click Here to See the Profile for topher_timeClick Here to Email topher_timeSend a Private Message to topher_timeEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by mtownfiero:

can anyone tell me how to do the timing using the 7730 and DIS? thanks, andrew


Computer controlled, you no longer have the ability to manually adjust it.

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mtownfiero
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Report this Post01-17-2009 01:01 AM Click Here to See the Profile for mtownfieroClick Here to Email mtownfieroSend a Private Message to mtownfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

so i have to let it time itself?

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americasfuture2k
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Report this Post01-17-2009 07:14 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

that timing is all programmed in the tuning. if your just running a stock 2.8 then nothing needed to do.

------------------
First LX9 Fiero GT, 1987
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
My Fiero Fuel Economy
Videos of My GT
Google Videos of My GT

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mtownfiero
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Report this Post01-18-2009 01:00 AM Click Here to See the Profile for mtownfieroClick Here to Email mtownfieroSend a Private Message to mtownfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

its a 2nd gen 3.1l? Im thinking its the same difference right.

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americasfuture2k
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Report this Post01-18-2009 03:30 AM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

nothing needed to do with the DIS

------------------
First LX9 Fiero GT, 1987
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
My Fiero Fuel Economy
Videos of My GT
Google Videos of My GT

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Report this Post01-19-2009 08:57 AM Click Here to See the Profile for PyrthianClick Here to Email PyrthianSend a Private Message to PyrthianEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by mtownfiero:
so i have to let it time itself?


no, it is already timed. timing on a DIS is controlled by a timing wheel on the crankshaft. there is nothing to move/vary from engine to engine, like a cap & rotor, so, the timing can be fixed/unadjustable.

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americasfuture2k
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Report this Post01-22-2009 07:58 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

ok, warm day and had about 45 min of daylight.... i tested the wires between the 5 pin DIS connector and the ECM plugs. all checked out fine. checked the power and ground on the 2 pin, all good. i removed the crank sensor wiring to wind together in the correct fashion i heard about from joe. well see what happens....anyone else have any input? if that proves nothing, then im down to replacing the ICM.
remember, no spark and the tach needle isnt moving. so its not getting something to send out....
crank sensor is going to be replaced too.

------------------
First LX9 Fiero GT, 1987
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
My Fiero Fuel Economy
Videos of My GT
Google Videos of My GT

[This message has been edited by americasfuture2k (edited 01-22-2009).]

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americasfuture2k
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Report this Post02-05-2009 05:43 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

ok, i just made a corrected crank prosition sensor wire (wires twisted together) and i am still getting no spark. tach needle isnt moving during cranking either. ICM possibly?

------------------
First LX9 Fiero GT, 1987
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
My Fiero Fuel Economy
Videos of My GT
Google Videos of My GT
MPG Display for OBD I

[This message has been edited by americasfuture2k (edited 02-05-2009).]

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Darth Fiero
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Report this Post02-05-2009 07:21 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by americasfuture2k:

ok, i just made a corrected crank prosition sensor wire (wires twisted together) and i am still getting no spark. tach needle isnt moving during cranking either. ICM possibly?


If your crank sensor is good and you have verified the wiring between the crank sensor and ignition module; and you have verified the ICM is getting power and ground where it needs them; then yes, it could be a bad ICM.

-ryan

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R Runner
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Report this Post03-14-2009 05:11 PM Click Here to See the Profile for R RunnerClick Here to visit R Runner's HomePageClick Here to Email R RunnerSend a Private Message to R RunnerEdit/Delete MessageReply w/QuoteDirect Link to This Post

I'm sorry if this was covered before, but I couldn't find it.

I am making an adaptor wire interface to be able to plug in the factory Fiero wire harness with minimal modification to the Fiero. I have the Wire harness from the 7730 and the pin side of the Fiero computer ('87 GT). The I see the pin connection listed as "Pin A1 move to Pin BA11". The Fiero side pins are obvious. There are 4 banks of pins... A,B,C, and D. All of the pins are numbered. simple. The pins on the 7730 wire harness are labeled as 6 banks A,B,C,D,E, (and I presume but it is not marked) F. Which pin is "BA11"? is that the one in pin bank "A" and PIN #11? What does the "B" in front of it mean? Is that the connector (there are 3 which could correspond to B and G and Secondary wire harness)?

So in summary.... What does the "B" and the "G" for the 7730 Pin location mean?

Thank you.

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Darth Fiero
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Report this Post03-14-2009 08:07 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by R Runner:

I'm sorry if this was covered before, but I couldn't find it.

I am making an adaptor wire interface to be able to plug in the factory Fiero wire harness with minimal modification to the Fiero. I have the Wire harness from the 7730 and the pin side of the Fiero computer ('87 GT). The I see the pin connection listed as "Pin A1 move to Pin BA11". The Fiero side pins are obvious. There are 4 banks of pins... A,B,C, and D. All of the pins are numbered. simple. The pins on the 7730 wire harness are labeled as 6 banks A,B,C,D,E, (and I presume but it is not marked) F. Which pin is "BA11"? is that the one in pin bank "A" and PIN #11? What does the "B" in front of it mean? Is that the connector (there are 3 which could correspond to B and G and Secondary wire harness)?

So in summary.... What does the "B" and the "G" for the 7730 Pin location mean?

Thank you.


The "B" in front of "BA11" stands for "Black" connector. So "BA11" means "Black Connector, pin A11". And pin "GF16" means "Green (or yellow) Connector, pin F16".

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R Runner
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Report this Post03-15-2009 12:51 PM Click Here to See the Profile for R RunnerClick Here to visit R Runner's HomePageClick Here to Email R RunnerSend a Private Message to R RunnerEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by Darth Fiero:


The "B" in front of "BA11" stands for "Black" connector. So "BA11" means "Black Connector, pin A11". And pin "GF16" means "Green (or yellow) Connector, pin F16".


Thank you Ryan! I was not sure if you or anyone else was checking this thread any more.

One more question..... I am using a harness out of a 91 F-body just like your Pin to Pin chart says (so I figure they should be close). While trying to make this harness, I noticed that on the F-body pig tail there was no wire for (I'm trying to remember) GF6. Should I be using the Fiero pig tail (I have a spare from the junk yard) to re-pin into the F-body connectors and then solder it to the back of the female Fiero computer input? (I have a junk one of those too ) OR, should I be using the F-body pig tail as the main wires?

Thanks for the help! I'll be needing a reprogram soon if things go well.

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mtownfiero
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Report this Post03-15-2009 07:40 PM Click Here to See the Profile for mtownfieroClick Here to Email mtownfieroSend a Private Message to mtownfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

Is there a list of what the codes mean anywhere besdies the ones on the forum? I could swear im getting code 54 but it isnt listed here. Thanks

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Report this Post03-15-2009 08:12 PM Click Here to See the Profile for R RunnerClick Here to visit R Runner's HomePageClick Here to Email R RunnerSend a Private Message to R RunnerEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by R Runner:


Thank you Ryan! I was not sure if you or anyone else was checking this thread any more.

One more question..... I am using a harness out of a 91 F-body just like your Pin to Pin chart says (so I figure they should be close). While trying to make this harness, I noticed that on the F-body pig tail there was no wire for (I'm trying to remember) GF6. Should I be using the Fiero pig tail (I have a spare from the junk yard) to re-pin into the F-body connectors and then solder it to the back of the female Fiero computer input? (I have a junk one of those too ) OR, should I be using the F-body pig tail as the main wires?

Thanks for the help! I'll be needing a reprogram soon if things go well.


Nevermind.... I think I figured it out. I am going to use the Fiero wires so that I can match up colors. Should make it easier to trace later.

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Darth Fiero
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Report this Post03-16-2009 11:23 AM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by R Runner:


Thank you Ryan! I was not sure if you or anyone else was checking this thread any more.

One more question..... I am using a harness out of a 91 F-body just like your Pin to Pin chart says (so I figure they should be close). While trying to make this harness, I noticed that on the F-body pig tail there was no wire for (I'm trying to remember) GF6. Should I be using the Fiero pig tail (I have a spare from the junk yard) to re-pin into the F-body connectors and then solder it to the back of the female Fiero computer input? (I have a junk one of those too ) OR, should I be using the F-body pig tail as the main wires?

Thanks for the help! I'll be needing a reprogram soon if things go well.



You can remove pins/wires from the Fiero ECM connectors and insert them into the connectors you are using for the 7730 ECM as needed. If you have extra left over from the F-body harness/connectors, you can use those as well.

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Darth Fiero
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Report this Post03-16-2009 11:25 AM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by mtownfiero:

Is there a list of what the codes mean anywhere besdies the ones on the forum? I could swear im getting code 54 but it isnt listed here. Thanks


http://www.gmtuners.com/OBD1_DTC.htm

Code 54 = fuel pump voltage low. This code usually sets when the Fuel Pump relay has failed (but the engine may continue to start and run because the fuel pump in stock Fiero applications gets power via the oil pressure switch which acts as the backup circuit).

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Report this Post04-02-2009 12:50 AM Click Here to See the Profile for BridgetownSend a Private Message to BridgetownEdit/Delete MessageReply w/QuoteDirect Link to This Post

Hey Guys! Don't mean to hijack but I thaught this is where everyone I am looking for would be. I am needing to enlist the help of somone familiar with doing the wiring for a 3400(LA1)/7730 swap into a fiero. This wiring is the last hurdle in my swap and I was hoping to get this thing together this summer. Thanks.

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RWDPLZ
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Report this Post04-07-2009 01:52 PM Click Here to See the Profile for RWDPLZClick Here to visit RWDPLZ's HomePageSend a Private Message to RWDPLZEdit/Delete MessageReply w/QuoteDirect Link to This Post

Man what an awesome thread. Too bad there's not a similar upgrade for the 2.5L

------------------

1984 Fiero SE

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Darth Fiero
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Report this Post04-07-2009 04:52 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by RWDPLZ:

Man what an awesome thread. Too bad there's not a similar upgrade for the 2.5L



Actually there can be. The S10 pickups used the 2.5 duke with a distributor up until 1993. These used the 1227165 / 16156647 ECMs which were of the "P4" generation (same ECM was used in 1986-89 TPI V8 cars). The only problem is these ECMs use different connectors and wire terminals vs. stock Fiero; so the conversion wouldn't just involve a simple repinning of the harness. You would need to either buy the proper terminals and crimp them on or splice in wires that had the correct terminals. I have not done this conversion yet so I cannot tell you if there are any worthwhile benefits. This conversion would only work for 1984-86 Fiero 2.5's that had the distributor. 1987-88 2.5's with DIS won't be compatible with this ECM; but you wouldn't need it anyway. The ECM used in these cars was used thru 1991 in others with the same engine.

-ryan

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NCTyphoonKid
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Report this Post04-07-2009 08:12 PM Click Here to See the Profile for NCTyphoonKidClick Here to Email NCTyphoonKidSend a Private Message to NCTyphoonKidEdit/Delete MessageReply w/QuoteDirect Link to This Post

Thanks for posting this thread
Korey

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Report this Post04-07-2009 10:14 PM Click Here to See the Profile for mtownfieroClick Here to Email mtownfieroSend a Private Message to mtownfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

is there any program for the 7730 with an aldl.

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Darth Fiero
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Report this Post04-08-2009 01:03 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by mtownfiero:

is there any program for the 7730 with an aldl.


No, but FreeScan says it supports it...(I don't know for sure because I have never tried it)

http://www.andywhittaker.co...abid/70/Default.aspx

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americasfuture2k
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Report this Post04-08-2009 04:59 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

tunerpro rt works with the 7730. unless i am not understand your question correctly.

------------------
First LX9 Fiero GT, 1987 | My Fiero Fuel Economy | MPG Display for OBD I
Youtube Videos of My GT | 87 GT Inside Test Run | 3500 Fiero GT Test Run 01
3500 Fiero GT Test Run 02 | 3500 Fiero GT Test Run 03 | 3500 Fiero GT Test Run 04
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
screw paying those bastards. im not going to become rich by paying for things.....

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mtownfiero
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Report this Post04-08-2009 06:51 PM Click Here to See the Profile for mtownfieroClick Here to Email mtownfieroSend a Private Message to mtownfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

Im basicly looking for something like winaldl but for the 7730. I want to be able to look at the values being sent to the ecm from the sensors since my motor is running slighltly rough.

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RWDPLZ
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Report this Post04-08-2009 11:46 PM Click Here to See the Profile for RWDPLZClick Here to visit RWDPLZ's HomePageSend a Private Message to RWDPLZEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by Darth Fiero:

Actually there can be. The S10 pickups used the 2.5 duke with a distributor up until 1993. These used the 1227165 / 16156647 ECMs which were of the "P4" generation (same ECM was used in 1986-89 TPI V8 cars). The only problem is these ECMs use different connectors and wire terminals vs. stock Fiero; so the conversion wouldn't just involve a simple repinning of the harness. You would need to either buy the proper terminals and crimp them on or splice in wires that had the correct terminals. I have not done this conversion yet so I cannot tell you if there are any worthwhile benefits. This conversion would only work for 1984-86 Fiero 2.5's that had the distributor. 1987-88 2.5's with DIS won't be compatible with this ECM; but you wouldn't need it anyway. The ECM used in these cars was used thru 1991 in others with the same engine.

-ryan


Ooh now that's interesting. Maybe I could build an adapter harness so I could swap back and forth between the original computer and the newer one, like Jncomutt made on page 5. Need to start looking for a 92 S-10 shop manual with wiring diagrams, check the ECM pinouts...

Would the stock chip in these computers run the 84 (plug it in and fire it up once the harness is adapted), or would it need a custom chip burned? The 1227165 seems to be going for about $50 on ebay...

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Darth Fiero
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Report this Post04-09-2009 12:17 AM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by RWDPLZ:


Ooh now that's interesting. Maybe I could build an adapter harness so I could swap back and forth between the original computer and the newer one, like Jncomutt made on page 5. Need to start looking for a 92 S-10 shop manual with wiring diagrams, check the ECM pinouts...

Would the stock chip in these computers run the 84 (plug it in and fire it up once the harness is adapted), or would it need a custom chip burned? The 1227165 seems to be going for about $50 on ebay...


While I haven't looked into this too much, I would imagine a stock chip from an S10 2.5 would run the Fiero 2.5 just fine; as long as the transmission type the chip was made for (auto or manual) matched the transmission you have in the car.

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americasfuture2k
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Report this Post04-11-2009 06:24 PM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

still no spark started checking DIS wires. first was all the grounds for the DIS. the 2 pin power connector is good. the 5 pin, i checked ground first. pin "F". it shows its grounded when the IGN is OFF. when i turn ign to run, it shows OL on the DMM meaning its open. does this mean my ECM is toasty?

------------------
First LX9 Fiero GT, 1987 | My Fiero Fuel Economy | MPG Display for OBD I
Youtube Videos of My GT | 87 GT Inside Test Run | 3500 Fiero GT Test Run 01
3500 Fiero GT Test Run 02 | 3500 Fiero GT Test Run 03 | 3500 Fiero GT Test Run 04
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
screw paying those bastards. im not going to become rich by paying for things.....

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americasfuture2k
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Report this Post04-12-2009 05:50 AM Click Here to See the Profile for americasfuture2kSend a Private Message to americasfuture2kEdit/Delete MessageReply w/QuoteDirect Link to This Post

also, on the 5 pins on that DIS connector, is pin E, the REFERENCE supposed to be at 5v or what? how can i test to see that the ECM is putting the right ' stuff ' out for the BYPASS, EST and the REF?

------------------
First LX9 Fiero GT, 1987 | My Fiero Fuel Economy | MPG Display for OBD I
Youtube Videos of My GT | 87 GT Inside Test Run | 3500 Fiero GT Test Run 01
3500 Fiero GT Test Run 02 | 3500 Fiero GT Test Run 03 | 3500 Fiero GT Test Run 04
If you can't fix it with a hammer, you've got an electrical problem
Fiero's are people too. We pay just as much attention to them, if not more than our loved ones
screw paying those bastards. im not going to become rich by paying for things.....

[This message has been edited by americasfuture2k (edited 04-12-2009).]

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Brint
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Report this Post04-12-2009 10:02 AM Click Here to See the Profile for BrintClick Here to Email BrintSend a Private Message to BrintEdit/Delete MessageReply w/QuoteDirect Link to This Post

Gwain, thank you for the EGR adaptor plate. Got it last Friday. Ryan, thank you for all your help and answered questions. I've just about got this thing ('87 GT) all wired up and ready to turn the key. The goal is to have it all done so al I have to do is plug in the PROM when Ryan is done with it Thanks again guys!

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Darth Fiero
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Report this Post04-13-2009 12:17 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageClick Here to Email Darth FieroSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by americasfuture2k:

also, on the 5 pins on that DIS connector, is pin E, the REFERENCE supposed to be at 5v or what? how can i test to see that the ECM is putting the right ' stuff ' out for the BYPASS, EST and the REF?



I believe the Reference output from the ICM should toggle between 5v and ground (high/low) to signal the ECM there was a "reference pulse". However, let's not get ahead of ourselves here. The ICM should command the coils to produce a spark with a cranking engine WITHOUT any ECM connected to it. All it needs is power, ground, and a crank sensor signal. So I recommend you disconnect the ECM connection to the ICM and work to get your spark events occurring first. Then we'll worry about what the ECM is doing.

-ryan

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