PCM or TPS problems?
12-26-2012, 04:57 PM
#1
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PCM or TPS problems? I drive a 94 Chrysler Concorde 3.3L ohv.
Car started dying suddenly, high rpm on highway, bad gas mileage and so on.
Now it will not start at all. Mechanic said it needed a new PCM.
Went to a salvage got 1 from the same make and model and it didn't fix the problem.
Changed spark plugs and wires. Also bought new TPS and also did not fix the problem.
I don't know what else it could be. Any suggestions?
Car started dying suddenly, high rpm on highway, bad gas mileage and so on.
Now it will not start at all. Mechanic said it needed a new PCM.
Went to a salvage got 1 from the same make and model and it didn't fix the problem.
Changed spark plugs and wires. Also bought new TPS and also did not fix the problem.
I don't know what else it could be. Any suggestions?
12-26-2012, 05:22 PM
#2
Need a little more info really or Diagnostics, does it crank over but doesnt start ? starts and stalls doesnt crank at all ? Your gonna need some basic tools to really diagnois issue, 3 most important things to check whats your fuel pressure Key on engine off 43 to 53lbs
Are you getting spark ? and last need a noid light to put on injector plug to see if its pulsing while cranking engine or not. Also check the CKP sensor on the back of the bellhousing and the wiring
And let us know and go from their
Are you getting spark ? and last need a noid light to put on injector plug to see if its pulsing while cranking engine or not. Also check the CKP sensor on the back of the bellhousing and the wiring
And let us know and go from their
12-26-2012, 10:10 PM
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It tries to start, its just not getting any fire. CKP, Camshaft Sensor and Input speed sensor have also all been changed.
Need a little more info really or Diagnostics, does it crank over but doesnt start ? starts and stalls doesnt crank at all ? Your gonna need some basic tools to really diagnois issue, 3 most important things to check whats your fuel pressure Key on engine off 43 to 53lbs
Are you getting spark ? and last need a noid light to put on injector plug to see if its pulsing while cranking engine or not. Also check the CKP sensor on the back of the bellhousing and the wiring
And let us know and go from their
Are you getting spark ? and last need a noid light to put on injector plug to see if its pulsing while cranking engine or not. Also check the CKP sensor on the back of the bellhousing and the wiring
And let us know and go from their
12-27-2012, 05:58 AM
#5
So you have no fire then need to check ckp wiring at plug
orange wire is 8volt supply
bk/lb is your ground
lb/dr is your sensros sinal wire
If your not getting those volts and or ground trace wiring back to pcm
Also try reseating cable to the pcm to find out if its a connection issue, to determine if you can take tie wrap on both end and tighten them up for extra pressure weird i know but have have several chryler products with connection issue at pcm
orange wire is 8volt supply
bk/lb is your ground
lb/dr is your sensros sinal wire
If your not getting those volts and or ground trace wiring back to pcm
Also try reseating cable to the pcm to find out if its a connection issue, to determine if you can take tie wrap on both end and tighten them up for extra pressure weird i know but have have several chryler products with connection issue at pcm
