1999 GMC SIERRA 1500

Asked by GuruT5G5Y Jun 15, 2018 at 12:09 PM about the 1999 GMC Sierra 1500 SLE 4WD Extended Cab LB

Question type: Maintenance & Repair

I recently switched motors in my truck, I pulled the motor from my 1999 gmc sierra 1500 and dropped it into a 1998 gmc sierra 1500. The motor turns over but it wont ilde, what would cause this to happen? the motor was working fine before switching it over

4 Answers
10

raymondmelcher11 answered 5 years ago

I'm assuming that all the wires are on the right plugs, Does it rev up when it's running? I would check for a bad dist cap or rotor, the next thing is fuel, Might need to set the curb idle. Did you have the Distributor out ?

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