GM Truck Club Forum banner

Idle Issues

3904 Views 13 Replies 8 Participants Last post by  fschevy1988
Just want to know what you guys think the most common/first place to look would be. I have a 1993 K1500 Burb. It idles great when you first start it, but after driving for a while then driving around the parking lot when you let off the gas the idle will drop like it is going to die (it never does completely die) then comes right up where it should.

From what I hear it could be, EGR Valve, MAP Sensor, Fuel Filter, or Fuel Pump. I don't mind replacing them all, but am trying to save a little money this month and need to take it on a little trip for Thanksgiving. So replacing the culprit the first try would be nice.


I am hoping its NOT the fuel pump :grrrrrr: DON'T want to drop the tank!!!
1 - 1 of 14 Posts
I would kinda doubt the fuel pump but fuel filter is a possiblity. Crawdaddy is right its probably vacumn leak. Good luck
1 - 1 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.