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 4 of 4
  1. #1

    Default Fuel pump maybe or fuel reg. or I'm just lost

    Ok I've changed plugs,wires,rotor and cap. I have a S10 4.3 2000 I have pressure tested the pump got 66 pounds with the key on after the pump turned off pressure drop 20 pounds but after Istarted the engine I got 53 pounds and was very steady. Ok here is the problem when driving above 40mph. The truck has surge you can watch the tach move 300-500 rpms when the truck climbs any size incline I have check for engine codes right now there are none. Before I change the plugs I was getting a misfire code on the number 2 cylinder. Thank you in advance for any help.

  2. #2


    Sounds more like you've got a funky injector.

  3. #3


    Sorry it took so long. It was a trany slip.

  4. #4
    Jr. Mechanic SoundZman's Avatar
    Join Date
    Apr 2009
    Santa Clarita, CA


    Quote Originally Posted by slider933 View Post
    Sorry it took so long. It was a trany slip.
    sucks, but glad to hear a resolution to a problem on here.
    >>>2003 Suburban K1500 LT<<<

    ~Rear overhead DVD
    ~Orion 600D
    ~ 12" Acoustic Elegance AV12
    ~Hankook ATM DynPro A/T's
    ~Flowmaster exhaust

Similar Threads

  1. HELP!!!!Changed fuel pump and ECM. fuel pump still wont turn on
    By fast_stang_88 in forum GM Powertrain
    Replies: 4
    Last: 06-03-2011, 04:46 AM
  2. Nylon Fuel Lines/Fuel pump recommendation
    By jed1124 in forum Chevy Truck Accessories
    Replies: 0
    Last: 03-21-2011, 08:10 PM
  3. Twitching/vibrating fuel gauge - Not the fuel pump assembly.
    By Springthing in forum Audio, Video & Gadget Tech
    Replies: 3
    Last: 09-26-2008, 05:10 PM
  4. Fuel Gauge sender/fuel pump Together-seperate???
    By TahoeCrowe in forum General Chevy & GM Tech Questions
    Replies: 9
    Last: 09-05-2008, 02:55 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