I have an 87 2.5l auto. When i start the car the check engine light come on right away and goes into a low idle which is weird because they usually have a high idle when started. It will drive but only what seems like half the power. il do the paper clip in the A and B terminal and no codes will flash back even though the check engine light was one when running.

Welcome to the Forum!

Before tossing out your ECM, re-set it at the battery junction block. Re-connect after a minute or so.

I just tried it a still same thing engine light comes on but no code will flash back. It just started this when i got the car back from the shop, it had a cracked head so i had a shop replace it being that its cold out an i wasnt going to do it haha. Is there something they could of just missed?

Just thinking of bad things they may have done......not helpful. How about starting the car with the ALDL jumpered...does it act the same?

alright i just figured it out, would never of thought of it there must be a hole somewhere in the exhaust an it was getting trapped in the engine compartment so it was choking the engine out

Not a stock air intake?

[This message has been edited by Gall757 (edited 02-25-2014).]

no just a round filter on top the tbi. came like that when i bought it.