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).]

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).]

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

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

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

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

How about these:

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

or

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

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).]

Does this look like it?



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

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

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.

so i have to let it time itself?

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

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

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

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.

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).]

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).]

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