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

100,345

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
    Reputation
    300
  • #2
    1oldman
    Reputation
    270
  • #2
    tennisshoes
    Reputation
    270
View All

Related Models For Sale

Used Chevrolet Blazer
1,050 listings starting at $950
Used GMC Sierra 1500
896 Great Deals out of 65,451 listings starting at $1,995
Used Chevrolet Tahoe
649 Great Deals out of 39,509 listings starting at $1,000
Used GMC Yukon
406 Great Deals out of 21,405 listings starting at $1,495
Used Ford F-150
2,316 Great Deals out of 183,061 listings starting at $1,000
Used Jeep Grand Cherokee
891 Great Deals out of 70,648 listings starting at $1,045
Used Chevrolet Silverado 1500
2,123 Great Deals out of 167,340 listings starting at $1,995
Used GMC Sonoma
6 Great Deals out of 430 listings starting at $1,000
Used GMC Envoy
50 Great Deals out of 2,112 listings starting at $1,500
Used Jeep Cherokee
365 Great Deals out of 47,069 listings starting at $2,795
Used Chevrolet S-10
5 Great Deals out of 1,208 listings starting at $2,500
Used Ford F-250 Super Duty
376 Great Deals out of 44,647 listings starting at $1,799

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.