What would cause my 1995 chevy k2500 to stall when shifting from park to drive?

Asked by Dec 23, 2014 at 12:45 PM about the 1995 Chevrolet C/K 2500 Silverado LB 4WD

Question type: Maintenance & Repair

just put a new crate motor in my 1995 chevy k2500.  new cap, rotor, plugs, wires, oxygen sensor, engine idle control. truck idles erratically.  idles about 800 rpms but drops to 500 or blow and stalls when shifting from park to drive

1 Answer


Sounds like a vacuum leak in the engine and don't forget to check the vacuum line to the vacuum modulator on the trans.

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