I HAVE A 91 GMC C3500 WITH A 454 IT'S A 5.7 ENGINE AND ITS RUNNING LIKE CRAPE WHEN I TRY TO DRIVE IT IT WHANTS TO STALL OUT

Asked by Sep 06, 2015 at 07:43 PM about the GMC C/K 3500 Series

Question type: Maintenance & Repair

I HAVE A 91 GMC C3500 WITH A 454 IT'S A 5.7  ENGINE AND ITS
RUNNING LIKE CRAPE  WHEN I TRY TO DRIVE IT IT WHANTS TO
STALL OUT THE IDEL GO'S UP AND DOWN  SOME TIMES WHEN I
COME TO A STOP IT CUTS OFF I UNPLUG THE TEMP SWITCH AND IT
RUNS BETTER BUT AT HIGH IDEL  STUFF I DID SO FAR BUT NO LUCK  
I DID A FULL TUNE UP AND THE FUEL PUMP  I CHANGED THE TEMP
SWITCH  SPARK PLUGS AND ROTA  AND CAP AND SPARK PLUG
WIRES PCV VALE OIL OIL FILTER AND I REBUILD THE FULL
THROTTLE BODY  I CHECKED THE TPS SENSER  AND STILL NO LUCK

2 Answers

28,065

does it have codes??it must...

YEA CODE 15- coolant sensor or circuit/ low temp indicated I JUST INSTALLED THAT SENSOR LAST WEEK NEW FOR AUTO ZONE BUT IT STILL DOING THE SAME THING THE IDOL NORMAL THEN DROPS DOWN LOW AND GO'S BACK UP WHEN I STOP A THE LIGHT SOMETIMES IT CUT'S OFF OUT OF NO WHERE AND IT STARTS RIGHT BACK UP

Your Answer

Looking for a Used C/K 3500 Series in your area?

CarGurus has 4 nationwide C/K 3500 Series listings and the tools to find you a great deal.

ZIP:

GMC C/K 3500 Series Experts

Related Models For Sale

Used GMC Sierra 3500HD
69 Great Deals out of 4,795 listings starting at $10,995
Used Chevrolet C/K 3500
216 listings starting at $3,199
Used GMC Sierra 3500
5 Great Deals out of 228 listings starting at $4,400
Used Chevrolet Silverado 3500HD
140 Great Deals out of 11,338 listings starting at $4,500
Used GMC Sierra 2500HD
110 Great Deals out of 14,334 listings starting at $2,799
Used Ford F-450 Super Duty
43 Great Deals out of 2,794 listings starting at $4,995
Used Ford F-350 Super Duty
372 Great Deals out of 27,289 listings starting at $3,000
Used Dodge Ram 3500
86 Great Deals out of 2,306 listings starting at $5,999
Used GMC Sierra 1500
1,182 Great Deals out of 64,913 listings starting at $999
Used Ford Bronco
208 listings
Used GMC Sierra Classic 3500
62 listings starting at $9,495
Used Chevrolet Silverado Classic 3500
9 Great Deals out of 108 listings starting at $5,500

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.