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Discussion Starter · #1 ·
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.


TIA

I am hoping its NOT the fuel pump :grrrrrr: DON'T want to drop the tank!!!
 

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Discussion Starter · #13 ·
more info

Ok I have been posting about idle issues. I have replaced the cap, rotor, plugs, wires, fuel filter, IAC valve and rebuilt the fuel regulator. Now I think it is giving it too much fuel at idle. If I give it gas then let off it drops to almost 0 RPM then will kinda come back up. But I just did it and as it was dropping rpm I gave it a little squirt of starting fluid and it died immediately. Do you guys have any suggestions at all?

1993 K1500 5.7L
 
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