P1345 GMC -

Question

Recent professional rebuild on the chevy 5.7 1997 c-3500. starts immediately.. no problem... idles fine.. when put in drive idles rough but then clears up after throwing P1345 code.. when put in neutral idles up rough but then clears itself up after a few seconds. runs rough when either putting a load on the engine or taking the load off?????? drives down the road fine????

Answer 1

P1345 CKP / CMP correlationship.

The distributor is out of timing.if it is a recent rebuild, you reset the distributor.