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reading trouble codes on '87 GL


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#1 zyewdall

zyewdall

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  • Ward, CO

Posted 13 September 2005 - 08:18 PM

I just swapped a '90 SPFI engine into an '87 GL. Seem to be indentical engines. I think I've got everything hooked up properly, but it won't start. I think it's getting fuel (gas at the inlet hose to the throttle body if I disconnect it, and ether doesn't help either), but not spark. I know the engine ran before I pulled it from the '90, and the ECU was good when I pulled the '87 engine because it ran fine (minus the blown head gasket). I want to read the trouble code to see what might not have gotten hooked up properly. But my chiltons (yeah, I know I need to get a real manual) just says hook up the "read" plug on the ECU to make the check engine light blink with the code. But doesn't say what the read plug looks like??????? Anyone have a picture or something?

Thanks

Zeke

#2 zyewdall

zyewdall

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Posted 13 September 2005 - 08:25 PM

Nevermind on the ECU codes. I just found a few old threads that address this -- it appears that I'm not the first one to be baffled by this. I'll try those.

But still, is there any special proceedure to start one of these engines after switching it, or just hook everything up and turn the key?

Zeke




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