my truck revs up the rpm then dies when I crank

10

Asked by Apr 12, 2016 at 07:33 PM about the 1999 Chevrolet Silverado 1500

Question type: Maintenance & Repair

I have a 97 chevy c1500 5.0 and when I crank it the
rpm goes really high then it dies. I have changed
the fuel pump and throttle positioning sensor and
idol control sensor but it still didn't fix it.

3 Answers

74,725

Sounds like there is a vacuum leak somewhere. Check for cracked vacuum lines, check the throttle body gasket, & snug up the intake manifold bolts.

10

Ok where would the vacuum lines be. I know that sounds dumb but im not a mechanic

74,725

They run all over the top of the engine.

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