GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 6 of 6
  1. #1

    Default What the HECK is going on?

    1991 K2500 350tbi

    I noticed when I got out of my truck last night that it sounded like my fuel pump was sitll running. I didn't think much of it. Thought maybe it was returning unused fuel to the tank. Well go this morning and I still hear it!!! Ever heard of this? What could it be?

  2. #2
    Legend
    TrailLeadr's Avatar
    Join Date
    Jun 2005
    Location
    Coventry, Rhode Island
    Posts
    3,103

    Default

    A bad oil pressure sending unit can trip the fuel pump and keep it running even when the engine is off.
    Unplug your oil sending unit, and the pump should shut off. If not then we'll look at different possibilities.
    Patrick
    Rhode Island


  3. #3

    Default

    I'll look into that!! Never would have thought of that!!

  4. #4

    Default

    Let us know what happens, and if that is the case.

    '01 Chevrolet S10
    -custom air intake
    -painted dash
    -footwell lights
    -Strange Performance stickers
    -exhaust coming soon
    -Xplod Head Unit with iPod connectivity
    -12" Sony Xplod woofer
    -Majestic 400 watt amp, bridged

    If at first you don't succeed, then skydiving is not for you.
    :party:

  5. #5

    Default

    Well you were right. Bad oil pressure sending unit. It was a PAIN to replace but I got it done. It's right under the distributor and next to imposable to get to. I ended up taking the distributor off. I was cussing some engineers!!!! Of course me not having any covered area to work on it during the freezing rain didn't make it any easier but I got it done. !!!! Thanks for the tips!!!!!

  6. #6
    Master Mechanic shadowt_t's Avatar
    Join Date
    Oct 2009
    Location
    Baghdad. Iraq
    Posts
    539

    Default

    lol iknow the problem there is nagative line and posative line , the nagative supply from the truck body and the posative comes from battery so u have short on the body make the fuel pump running try to check the wires
    ashes to ashes dust to dust:slap:




    chevy tahoe 08 LT with sunroof
    cd changer leather seat ,20"wheels
    chrome full set 5.3 V8 back sensores
    4x2 fog lamps and full tint

Similar Threads

  1. What the heck is wrong with this website?
    By DrewsZ71 in forum Announcements & Feedback
    Replies: 9
    Last: 02-18-2009, 09:57 PM
  2. What the heck is the deal?
    By DeputyDave in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 3
    Last: 07-12-2007, 03:56 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
  •