LT1 PCM/harness ground locations
04-04-2010, 07:25 AM
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LT1 PCM/harness ground locations what other ground locations are there besides
I have one wire grounded above knock near oil dipstick bolt.
I have 2 off the harness one drivers front head
I am not getting good ground to vss,tps, map and possibly other stuff also
I have one wire grounded above knock near oil dipstick bolt.
I have 2 off the harness one drivers front head
I am not getting good ground to vss,tps, map and possibly other stuff also
04-04-2010, 12:35 PM
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they are all good, my vss reads funny and it goes from 68mph to 96 mph nothing in between accel or decel and it is causing me to not be able to make the car shift at WOT.
Wiring all checks good, I have no idea how to check the vss, dont know what else it could be possibly pcm?
Wiring all checks good, I have no idea how to check the vss, dont know what else it could be possibly pcm?
04-05-2010, 10:01 PM
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I'm having similar issues... my 5v reference to the tps is reading 1.5v from the pcm. I've swapped PCM's and had the same problem. I'm suspecting a ground issue, but I haven't dug into it any further at this point. Considering I swapped this LT1 into a completely different vehicle I thought I might have missed a ground or even an ignition, but all the ignitions are good.
