1998 chey 3500

210

Asked by aurorasmalleng Dec 24, 2010 at 03:05 PM about the 1998 Chevrolet C/K 3500

Question type: Maintenance & Repair

i have a 1998 chevy 3500 deisel with 6.5 turbo it come up with code p0236b what it doing is blowing black smoke and racing up and down and filling air filter with black smoke some time runs very well and sometimes eng races up and down

2 Answers
2,735

Dan answered 11 years ago

its not going to be a map sensor or a vacuum leak. A vacuum leak will not cause a diesel engines idle to rise only adding more fuel will. And this truck does not have a map sensor. It is most likely a fuel problem.

Mark helpful

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