why does 99 gmc jimmyloose power the gas i give it . .

Asked by Mar 18, 2016 at 08:37 AM about the 1999 GMC Jimmy 4 Dr SLE 4WD SUV

Question type: Maintenance & Repair

my 99 jimmy idiles fine and runs fine going 20 to 30 mph but when i give it gas
it wants to cut  .or idiling when i push on the gas it cuts out.

3 Answers


It may be a fuel issue or a spark (electrical) issue. i would suggest checking the fuel pressure at the Schrader Valve on the intake manifold. Fuel pressure should be 56 to 63 lbs. if this is a V6 or a V8 engine. Once fuel pressure builds up, turn the key off. The fuel pressure should not drop more than 5 lbs. in 3 minutes.

1 of 1 people found this helpful.

checked fuel pressure. running about 55 lbs. dropped about 4 lbs in 6 min.


Boy, that is border line readings, but not your problem. I am thinking the coil is bad. That can be tested at Auto Zone.

Your Answer

Add photo

Related Questions


Looking for a Used Jimmy in your area?

CarGurus has 285 nationwide Jimmy listings starting at $2,495.


Search GMC Jimmy Questions

GMC Jimmy Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 280
#2 tennisshoes
Reputation 260
#3 1oldman
Reputation 240
View All

Related Models For Sale

Used Chevrolet Blazer
5 Great Deals out of 1,205 listings starting at $1,995
Used GMC Sierra 1500
763 Great Deals out of 69,762 listings starting at $1,800
Used GMC Yukon
388 Great Deals out of 20,074 listings starting at $2,495
Used GMC Envoy
59 Great Deals out of 2,191 listings starting at $1,990
Used Chevrolet S-10
5 Great Deals out of 1,346 listings starting at $1,500
Used Dodge Ram 1500
426 Great Deals out of 10,962 listings starting at $1,000
Used Chevrolet Tahoe
587 Great Deals out of 32,526 listings starting at $1,500
Used Toyota 4Runner
270 Great Deals out of 19,064 listings starting at $2,695
Used Chevrolet Silverado 1500
1,837 Great Deals out of 182,461 listings starting at $1,595
Used Jeep Cherokee
474 Great Deals out of 42,410 listings starting at $1,995

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.