high idle

  1. G

    1991 c3500 454 high idle at 1200 rpm

    I have a 1991 c3500 dually 454 auto. After warming up and driving it will idle at 1200 in park and 1000 in drive. 80k original miles. Replaced tps and iac. All vacuum lines look good. Sprayed starting fluid all around base of tb and vacuum lines and around edges of intake manifold and rpms didnt...
  2. Misterman

    Water in mystery connection

    2000 c2500 5.7 Had water get in a mystery connection today that shorted the ICM and caused a high idle situation. That was fun :mad: Anyone know where these connectors are too? The truck used to be a fleet vehicle with the CNG option.
  3. V

    Found Electrical Drain With Thermal Camera, Now What?

    So the 1995 Chevy Suburban 1500 5.7L i bought has a wicked, parasitic draw that keeps killing my batteries and wont let me pass smog. I bought it to drive cross country so thats not good. Not wanting to pay a mechanic thousands of dollars i dont have, just for a diagnosis, I bought a thermal...
    • Voyager
    • Thread
    • high idle parasitic draw steering column wiring
    • Replies: 8
    • Forum: Electronics
  4. M

    (1994 GMC C1500 350 SBC) Truck runs super high idle! Help!

    Howdy this is my first post here. My complaint is my truck runs super high idle (~1500) on starts in park. When I go to drive it dips down to 1k. As truck gets to operating temperature, high idle goes away. It seems to be related to engine temp as for in the winter it was not so bad. ECM has...
  5. W

    High idle

    I have a 92 k2500 with a 305. I have a high idle of around 1300 rpm in park and when I shift into gear it drops under 500 then pulls back up to around 1300. I cleaned the IAC but I’m not sure what else to check to diagnose this.
  6. W

    High idle

    My 92 K2500 (305 TBI) idles very high when I put it in park. I don’t have a tach yet to tell me exactly how high but it is clearly high. From what im seeing, cleaning the Idle Air Control Valve is a good start. Do I just disconnect the battery then the connector and pull it out and clean with...
  7. retmotor

    High Idle after Warm; Smells Rich; Code 44

    Hi. I like to figure things out by myself as I go, however I have gotten myself into a bit of a time crunch, so I’m asking for help. (I've been lurking for a few weeks. I'll post an intro when I get my act together.) 1991 C3500 Pickup, 2x4, 454, dually. SYMPTOMS: High idle (1100+ RPM) after...
  8. Figuarus

    4.3 Vortec idle issue

    Hey guys. Newbie here. Was told this is the place to get help with my 96 C1500. It's a 4.3L with 5spd. Reg cab, Longbed, 2wd. Engine is bone stock. I bought this truck about 2 years ago. It's been great, but have noticed a few issues that I have never gotten around to trying to diagnose...
  9. SlimPickinz

    High idle switch 6.5 diesel

    I have a 6.5 diesel, I’ve seen people make high idle switches for them, but I guess they buy pins from gm(or used to) to plug the wire into the pcm. My question is, can I just make my own pin? Can I just basically push the wire in? Does anyone have a couple gm pins I can buy? I appreciate it
  10. J

    High Idle - Rich Exhaust

    1989 CHEVROLET C3500 7.4l TBI Automatic Transmission Fuel Pressure: 11.5 psi Manifold Pressure: 18 hg Thermostat: 205° F Timing: 4° BTC Controlled Idle: 750 rpm/13 counts Minimum Idle Air Rate: 700 rpm TPS at Idle: 0.82 volts MAP: with-in ranges o2 Sensor: voltage high at idle (0.8-0.9v +/-)...
  11. J

    Random shutdown/IAC goofiness

    Howdy fellers. I'm about to drag up a very tired subject, so be prepared ;) My K2500 (1995, TBI, 7.4) Has been giving me some very frustrating issues as of late. Seemingly without warning, it'll shut itself off. Can happen at an idle, or when I'm coasting to a stop, or even under light...
  12. Allen97

    High idle

    Ok I need some advise. I have a 97 Sierra 1500 2wd ext cab. I just swapped the 4l60E for an NV3500. It wasn’t doing it at first but now every time I hit the clutch while moving it isles up to about 2 grand in between gears and stays there until I either hit the next gear or come to a complete...

Latest posts

Members online

Total: 3,899 (members: 36, guests: 3,863)

Forum statistics

Threads
77,831
Messages
1,640,637
Members
80,532
Latest member
9898OBS_
Top