idle

  1. T

    95 GMC 2500 Surging At Idle

    I have a 95 GMC 2500 that will occasionally surge at idle. I never noticed the problem until I recently had broken manifolds that I had changed out. At the same time I replaced the fuel filter, air filter, put in new spark plugs, new cap, new rotor, new spark plug wires, new heater core and a...
  2. S

    Rough Idle/ Backfire

    Hey guys, this is my first post here because I really need some help. The last few months my 1992 GMC Jimmy SLE W-vin (4.3L Vortec V6) has been starting to idle pretty rough, sometimes to the point of dying out on me. So I brought it into my shop and did a tune up. Spark plugs, wires...
  3. J

    2000 GMC Jimmy Emissions issues.

    Hey guys I'm new to the forum, 2000 gmc jimmy sls owner. Quick rundown. I bought this truck from my friend it was sitting in her garage for over a year until I purchased it 2 weeks ago. I'll be very descriptive so you guys can get a clear image. The truck was running like a bag and the engine...
  4. Q

    1997 Jimmy idle humming

    Ive had my Jimmy for about a year now and recently while im idling i hear a humming coming from what seems to be the engine but this noise goes away as soon as i hit the accelerator whether Im in park or drive. This has been happening for about a month now but i typically only drive it once or...
  5. T

    96 Jimmy thermostat rising on idle

    Hello. I just bought a 1996 GMC Jimmy with a few issues. Since I'm not rolling in cash I'm hoping to manage some of the repairs myself. First out of the gate is the temperature problem that I didn't notice a couple days ago. The Jimmy starts smoothly and there are no strange noises coming...
  6. M

    Bad Shaking Over 60 Mph

    Hey guys i have a 2001 GMC Sierra. It only has 120000 miles on it and here recently i have noticed that when i drive over 58-60 mph my whole truck shakes. I dont know if it really is the whole truck but it sure feels like it. My steering wheel shakes as well. Its bad enough where i have to slow...
  7. U

    Please HELP! 4.3 cuts out at 50% throttle

    Sorry for my first post to be asking for help, but I'm banging my head against a wall here. I just bought a project 1997 Sonoma ZR2 that's been sitting for a few months since the prior owner couldn't figure it out. It runs great overall except for as stated above. Starts fine cold or hot and...
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