Why does my 4.3 v6 crank several times before starting up after sitting 30+ minutes?

Asked by Jul 25, 2017 at 12:21 AM about the 2000 GMC Jimmy 4 Dr SLE 4WD SUV

Question type: Maintenance & Repair

I have a 2000 GMC Jimmy with the 4.3 v6
and on a cold start it fires up but after
driving it and and it sit 25-30 minutes it
cranks several times before firing up, I've
replaced the fuel pressure regulator, fuel
filter, and fuel pump. I'm honestly stumped
on this one. What could be the problem?

1 Answer


Check the fuel lines for routing and shielding problems, sometimes the plastic mounts break and allow the lines to,get to close to a heat source and that can cause fuel purculation during a hot soak time period, if concerned you can wrap the fuel lines with heat shield wrap, you also may want to do a live data scan just too see if all the sensors are within specs, if a sensor is out of calabration it could cause a leaning out of the fuel mixture so the engine is not getting enough to refire after setting. HTH

1 of 1 people found this helpful.

Your Answer

GMC Jimmy Experts

  • #1
    Andrew Olsen
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Blazer
4 Great Deals out of 835 listings starting at $950
Used GMC Sierra 1500
1,100 Great Deals out of 61,833 listings starting at $1,295
Used GMC Yukon
493 Great Deals out of 19,463 listings starting at $2,800
Used Chevrolet S-10
8 Great Deals out of 1,143 listings starting at $950
Used Chevrolet Tahoe
831 Great Deals out of 40,285 listings starting at $1,900
Used GMC Envoy
45 Great Deals out of 1,853 listings starting at $1,100
Used Ford Explorer
1,073 Great Deals out of 67,913 listings starting at $1,200
Used Ford F-150
3,062 Great Deals out of 230,783 listings starting at $1,300
Used Jeep Cherokee
331 Great Deals out of 54,368 listings starting at $8,495
Used GMC Sonoma
4 Great Deals out of 369 listings starting at $2,150
Used Chevrolet Silverado 1500
2,716 Great Deals out of 158,224 listings starting at $1,850
Used Dodge Durango
270 Great Deals out of 24,984 listings starting at $1,500

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.