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

105,355

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
    310
  • #2
    1oldman
    Reputation
    270
  • #2
    tennisshoes
    Reputation
    270
View All

Related Models For Sale

Used Chevrolet Blazer
3 Great Deals out of 944 listings starting at $950
Used GMC Sierra 1500
1,219 Great Deals out of 64,510 listings starting at $999
Used GMC Yukon
618 Great Deals out of 20,715 listings starting at $2,600
Used GMC Envoy
40 Great Deals out of 1,973 listings starting at $1,499
Used Chevrolet S-10
11 Great Deals out of 1,224 listings starting at $1,550
Used Chevrolet Camaro
452 Great Deals out of 31,412 listings starting at $1,450
Used Chevrolet Tahoe
833 Great Deals out of 41,907 listings starting at $1,987
Used Jeep Cherokee
521 Great Deals out of 61,305 listings starting at $1,995
Used Ford Explorer
1,265 Great Deals out of 69,014 listings starting at $750
Used GMC Sonoma
5 Great Deals out of 423 listings starting at $2,150
Used Jeep Grand Cherokee
1,064 Great Deals out of 72,263 listings starting at $1,195
Used Chevrolet Impala
592 Great Deals out of 34,469 listings starting at $900
Used Jeep Wrangler
464 Great Deals out of 19,376 listings starting at $2,500

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.