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Hi, Im working on a 94 buick regal 3.8 with no spark. When I check the icm for power, I have 12v, the ground is good too. Next I check power to the crank sensor and i have 10 v. then I crank the car and starts and runs good for about a week. After a week of starting with no problem, happens again so I do the same to check it and starts after I check the same wire that feeds power to the sensor. Im confused if my problem is the sensor or the icm. Any help will be appreciated. Thanks
Fred.
You said you were checking power to the crank sensor. We’re you doing this at the icm? Or at the crankshaft sensor?? It seems like you have a connection issue when your checking the power your wiggling something and getting a connection for everything to work
I was checking at the icm. I wiggled all the wires, at the icm and at crankshaft sensor. The funny thing is that is not starting and after I test for power, starts. I'm using and digital multimeter.
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