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DFI and ECMDiscuss all aspects of DFI (Digital Fuel Injection), ECMs (Electronic Control Module), scanners, and diagnostic equipment. Fine tune your Third Gen computer system for top performance.
Hi I have a 1987 camaro iroc and I think there is a issue with the ecm, the car is getting power and cranking however when I turn the key to the on position the engine light is not illuminating and the injectors aren’t getting power.. I recently picked up the car and I noticed it has a remanufactured ecm.
Replacing it and see if it fixes your problem would be the fast and easy way to test that.
ECMs don't die very often. I have had a car with a faulty ECM (but it didn't fully die). The no SES light makes me suspicious of a poor ground or lack of power somewhere. Things you could check:
verify power at the injector fuses
verify top of the fuse box is clear of debris
verify signal from the distributor to the ECM
verify all the parts that have been replaced are installed correctly
The diagnostic flowchart for this issue in the factory service manual (not Haynes) could be helpful.
