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| ECM upgrade (1227730) for stock 2.8 (Page 85/107) |
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rjblaze
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JAN 13, 02:45 PM
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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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JAN 13, 10:26 PM
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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.
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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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JAN 13, 10:43 PM
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| 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.
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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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JAN 13, 10:47 PM
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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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JAN 15, 04:53 PM
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americasfuture2k
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JAN 15, 05:11 PM
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flimbob
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JAN 15, 05:25 PM
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americasfuture2k
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JAN 15, 05:30 PM
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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.
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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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JAN 15, 10:03 PM
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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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JAN 16, 12:10 AM
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can anyone tell me how to do the timing using the 7730 and DIS? thanks, andrew
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