Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi and thank you for your question! I'm sorry to hear you are having starting issues with your Equinox. It can be very frustrating. I need to ask you some quick questions for diagnostic purposes. Are there and Diagnostic trouble codes stored in the ECM / PCM? When did the issue start, were you driving and the engine suddenly stalled or did it just not start one day?
Ok good to know. I assume you've checked for spark with a spark tester connected to a plug wire? Did you check for proper power and grounds at the ignition module connector?
Ok perfect. So, power going into the ignition module yet no spark from the coils?
ok, if you have a scan tool, does the engine data show RPMs while cranking?
ok, I'll wait for your answer
Ok that's important. There is something wrong with the cranking system. You said you replaced the crank sensor correct? What condition was the wiring going to the crank sensor in? Any oil intrusion in the terminals?
ok. I think we are getting very close to solving our issue, Thank you so much for heling me get to the solution by answering my questions so responsively. I recommend checking all three wires from the crank sensor to the ignition module for excess resistance, should be very low resistance (less than 1 ohm). Next check terminal C at the crank sensor (make sure he connector at the ignition module is plugged back in), it's a light blue / lack wire. With the key on, it should be 12 volts.
No problem. thank you again for your question. I'd be more than happy to help you in the future if needed. I think it's narrowed down to the ignition module or ECM. If you would be so gracious as to pass on a great thumbs up rating, I'd really appreciate it. Thanks again!!
Hi and please accept my apologies for my absence. The module I was referring to is the ignition module. If you need futher help, I'd be happy to help tonight or tomorrow, whatever works best for you.