PCM Ground wire not grounded issues?
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Joined: Apr 2004
Posts: 613
From: Whittier, CA & La Puente, CA
PCM Ground wire not grounded issues?
The ground wire in this photo -
If it was disconnected or not getting a decent surface contact - would that cause the car to not start?
If it was disconnected or not getting a decent surface contact - would that cause the car to not start?
Registered User
Joined: Dec 1969
Posts: 27,725
From: Little Rock, AR
Re: PCM Ground wire not grounded issues?
No, it won't. It may cause possible strange issues, but not starting would not be one of them. Numerous people have found that off and didn't know it. The PCM has numerous grounds.
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Joined: Jun 2011
Posts: 23
From: Texas
Re: PCM Ground wire not grounded issues?
4 grounds to PCM
A2 - Black & White Wire
C32 - Black & White Wire
A18 - Tan & White Wire
D1 - Tan & White Wire
Registered User
Joined: Oct 2004
Posts: 809
From: Houston, TX
Re: PCM Ground wire not grounded issues?
No it will not allow the car to start. I had the same exact issue where I forgot to hook up the PCM ground when I replaced the dipstick tube and oilpan gasket and spent over a week trying to figure out why the car wouldn't fire. That was my issue, as when I hooked up the PCM ground the car fired on the first try and ran butter smooth.
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