TROUBLE CODE P1345 DID TUNE UP STILL HAVE PROBLEMS

1996 GMC C2500

Tiny

fixtruck

November, 21, 2011 AT 9:55 PM

Have 1996 gmc pickup sierra 2500 4x4, 5.7 liter. Trouble code p1345. Mechanic replaced distributor, crankshaft sensor, plug wires, coil, battery. Same problem. Misfires badly when rainy/humid. Run better after engine is hot or parked hot for awhile.

FOUND 42 RELATED QUESTIONS

P1345 Code

9 ANSWERS

03 Code P1345

3 ANSWERS

8 Answers

Tiny

ASEMaster6371

November, 21, 2011 AT 10:07 PM

Did he check the timing chain for deflection?

Roy

Tiny

fixtruck

November, 22, 2011 AT 12:55 AM

I doubt it, but would damp weather affect that. The problem goes away when the engine has run hot for awhile, or when the weather is hotter and dry.

Tiny

ASEMaster6371

November, 22, 2011 AT 12:56 AM

Ok, how about the coolant sensor? This will effect fuel mixture according to temperature.

Roy

Tiny

fixtruck

November, 22, 2011 AT 1:02 AM

Was wondering if the wiring, etc. Between the cam sensor and crankshaft sensor could be going bad since it is affected by rain and high humidity so much.

Tiny

ASEMaster6371

November, 22, 2011 AT 1:06 AM

Could be. Ohm it out to confirm.

Roy

Tiny

fixtruck

November, 22, 2011 AT 1:13 AM

Doubt if coolant sensor was checked. P1345 code was for crankshaft position/camshaft position correlation fault, so I think they were concentrating on those two areas.

Tiny

fixtruck

November, 22, 2011 AT 1:17 AM

How do I ohm it out. Are they directly connected or is there something between them?

Tiny

ASEMaster6371

November, 22, 2011 AT 1:19 AM

You need to see the color wires for the sensors back at the pcm. You connect one lead at the pcm and the other at the sensor and make sure you have a reading.

Roy

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