GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 2 of 2

Thread: tbi problem

  1. #1

    Default tbi problem

    i have a 92 c1500 with 225000 on it and when i start it up the tach will jump and i can
    hear it slightly miss out of the tail pipe until it warms up i put a new distributor, plugs wires
    and cap a year and a half ago and this has started about 3 months ago. just wondering
    if anyone has seen something like this before.

  2. #2


    Several easy things to do before spending a lot of money...

    - Check Distributer Cap for cracks or excessive wear, carbon on contacts, cheap to replace
    - Remove spark plugs, clean and re-gap
    - Remove IAC from TBI and clean with TBI cleaner
    - Remove TBI and clean with TBI, clean off all of the carbon
    -- with the TBI off, inspect the Intake, clean out any build up
    - Check timing, disconnect the distributer from the computer, set to 0 degrees

    After these items are addressed give the truck a good test drive. If there is no improvement in performance, the next thing to have checked is the Catylitic converter. Probably time for a new one.

    Also look over the Cylinder heads, they may be cracked.

    Let us know how things turn out.
    Pavement sucks... :grrrrrr:

    1994 K1500 4x4 Ext. Cab
    PCM chip and Xenon 8000k bulbs bored over .050"
    balanced Crank, 10:1 compression
    Flat top pistons,cam,ported heads
    Option Racing Cold Air Intake
    Holley Throttle Body Spacer
    Accell Igition, 45kv coil
    FloTech Headers, no CATs, dual exhuast
    Goodyear Silent Armor A/T 305/70-16
    Pioneer SupertunerIII CD USB Bluetooth
    Kicker ZX200.2 ZX Amp
    Kicker Audio COMP 10" Subwoofer

Similar Threads

  1. ABS problem
    By FireRed in forum Lifted & Offroad Suspension
    Replies: 5
    Last: 01-09-2010, 09:57 AM
  2. 96 Chevy tahoe problem fuel problem? Need help ASAP!
    By Fear58 in forum General Chevy & GM Tech Questions
    Replies: 5
    Last: 12-13-2009, 05:38 PM
  3. new here but have a problem
    By kjames323 in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 2
    Last: 10-06-2009, 07:41 PM
  4. A/C problem
    By mprodman in forum General Chevy & GM Tech Questions
    Replies: 2
    Last: 04-03-2009, 12:41 PM
  5. Problem with AC
    By 4runnerGuy in forum General Chevy & GM Tech Questions
    Replies: 9
    Last: 03-30-2009, 07:10 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts