1990 GMC Sierra low idle and stalling

Asked by 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

17,290

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

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..

17,290

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 ?

Your Answer

Add photo

Related Questions

  • rough idle, stalling, loss of power. 225 answers

    o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so. I don't think its the torqu...

    1995 GMC Sierra 1500 K1500 SL 4WD Extended Cab Stepside SB

    -

    Maintenance & Repair

  • sometimes starts with low idle sometimes starts correctly. 7 answers

    2002 GMC sierra. sometimes when I start the truck it will idle about 500, then it will run rough or stall. If I turn it off, I have to turn the key off completely, and restart it will idle at 1000 an...

    2002 GMC Sierra 1500 SLE Standard Cab SB

    -

    Maintenance & Repair

  • Need to find 1995 GMC Sierra 1500 5.7L V8 O2 sensor wire 11 answers

    I am doing work on my 1995 GMC Sierra 5.7L V8 I recently purchased. It is idling very rough and stalls when put into gear. When looking through the engine bay, I discovered that the O2 sensor wire wa...

    1995 GMC Sierra 1500 K1500 SL 4WD Standard Cab LB

    -

    Maintenance & Repair

  • Stalling out and wont stay running. Acts like it wants to run but gets choked out. 47 answers

    I have a similiar problem as devin, my 95 Sierra 4x4 it has a 350 5.7L engine and the fuel filter has been replaced I cleaned the injectors out and put a new gasket on. The shop said I have good fuel ...

    1995 GMC Sierra 1500

    -

    Maintenance & Repair

  • stalling out 1 answer

    truck stalls out while coasting

    1994 GMC Sierra 1500

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 59,972 nationwide Sierra 1500 listings starting at $1,299.

ZIP:

Search GMC Sierra 1500 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,620
#2 John Saffrahn
John Saffrahn
Reputation 3,230
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 2,890
View All

Related Models For Sale

Used Ford F-150
3,039 Great Deals out of 207,184 listings starting at $1,990
Used Chevrolet Camaro
438 Great Deals out of 40,495 listings starting at $3,500
Used GMC Sierra 2500
184 listings starting at $6,497

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
24 Great Deals out of 32,444 listings starting at $23,800
2016 GMC Sierra 1500 For Sale
69 Great Deals out of 4,729 listings starting at $18,710
2015 GMC Sierra 1500 For Sale
163 Great Deals out of 4,291 listings starting at $15,888
2014 GMC Sierra 1500 For Sale
167 Great Deals out of 4,307 listings starting at $12,750
2013 GMC Sierra 1500 For Sale
114 Great Deals out of 2,465 listings starting at $9,500