1990 GMC Sierra low idle and stalling
10

Asked by campjl57 Jun 27, 2015 at 10:13 AM about the 1990 GMC Sierra 1500 K1500 4WD Standard Cab LB

Question type: Maintenance & Repair

I have a 1990 k1500 low idle and
stalling problem, I replaced my fuel
filter and spark plugs, i changed the
fuel pump 3 years ago. Weird thing is
when I rev the engine the oil display
moves with the reving of the engine.
Any insight would be great

3 Answers
64,510

firebird338 answered 8 years ago

Check air filter and clean throttle body with throttle body cleaner. Add fuel injector cleaner to gas tank.

Mark helpful
10

campjl57 answered 8 years ago

I clean the egr, idle valve, and the carburetor and it's not stalling any more, it is a little rough from idle to 20 mph..

Mark helpful
64,510

firebird338 answered 8 years ago

Put in some fuel injector cleaner and take it out on the road and hit the passing gear a few times that will help clean injectors and carbon build up. Be careful no speeding tickets. Did you also check the air filter ?

Mark helpful

Your Answer:

Related Questions

  • 1990 GMC Sierra low idle and stalling 3 Answers

    I have a 1990 k1500 low idle and stalling problem, I replaced my fuel filter and spark plugs, i changed the fuel pump 3 years ago. Weird thing is when I rev the engine the oil display moves with ...

    1990 GMC Sierra 1500 K1500 4WD Standard Cab LB

    -

    Maintenance & Repair

  • 1990 GMC Sierra C1500 1 Answer

    Okay so I have a 1990 GMC Sierra c1500 with a 350 and the 700r4, I figured its jumped time but I was wrong. So here I am. Okay so it will run 100% fine in park and neutral, but as soon as I put it ...

    1990 GMC Sierra 1500 C1500 Standard Cab LB

    -

    Maintenance & Repair

  • 1998 GMC Sierra 1500 Low Idle, then dies 4 Answers

    I drove my GMC Sierra (1998) round trip two days ago about 250 miles, which is more than usual As I got off the interstate and was stopping at the stop sign, I noticed it wanted to idle low and was...

    1998 GMC Sierra 1500 C1500 SL Extended Cab SB

    -

    Maintenance & Repair

  • 1990 gmc sierra k1500 5.7 350 2 Answers

    My 1990 gmc sierra k1500 5.7 350 will crank and idle great and Rev fine and you can put it in gear and drive it somewhat fine but occasionally it sputters and cuts off and when you mat the gas ped...

    1990 GMC Sierra 1500 K1500 4WD Standard Cab SB

    -

    Maintenance & Repair

  • 1990 GMC Sierra idling rough and guzzling coolant. Why? 8 Answers

    Truck has started idling really rough when, say, stopped at a light. The idle continues to be rough when I pick up speed, but it tends to even out a little. On top of that, my coolant has been disap...

    1990 GMC Sierra 1500

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 8,251 nationwide Sierra 1500 listings starting at $3,000.

Postal Code:

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,340
  • #2
    dragonflyoffshore
    Reputation
    11,500
  • #3
    John Saffrahn
    Reputation
    11,440
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
314 Great Deals out of 13,742 listings starting at $3,800
Used Chevrolet Camaro
13 Great Deals out of 468 listings starting at $11,749

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.