Question about 1996 Chevrolet C3500
1996 6.5 turbo diesel . For about the first 15 miles in the morning the engine cuts in and out as if it is a vacuum lock. Both fuel tanks are well vented and it happens with both tanks. I have two seperate lift pumps (one for each tank) they both work fine.could it be the optical sensor? it pops codes po370 and po238 but also clears itself in a short time 20 min of driving. All new filters. 'injection pump fuel metering control "A" What does the "A" mean? I replaced the PMD and mounted it on the fender.
Put a mechanical fuel gauge and long fuel hose on the bleed valve on water crossover run it in the cab and opserve pressure, should be 3 psi at idle and min 1 psi wide open trottle. on steady run fuel pressure should stay steady too,about 3-4 psi, if it fluctuates from o psi to whatever, it could be interupted power to the LP. failing OPS ??
Try above first.
what are the codes for??
Posted on Jul 12, 2008
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Posted on Jan 02, 2017
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