Trouble Starting/ Engine dies once in awhile while stopped at a light

Asked by jrodbaseball Mar 11, 2016 at 03:53 PM about the 1999 GMC Sierra 1500

Question type: Maintenance & Repair

My truck will start just fine after sitting for awhile (i.e. overnight), but if the engine is shut off and I try to start it back up in 5 minutes, 10 minutes, 30 minutes later, its hard to start and takes a little (5 sec).  Always starts eventually. Also, when I am stopped at a light, I will feel the truck is about to die, but if I let off the brake it will catch itself and be fine.  Any ideas on what it could be...I'm thinking fuel pump, but after looking at some of the answers on the site to similar questions, it seems like that's not always the case. Also its not the battery...its brand new.

2 Answers
90

HonchoGTO answered 8 years ago

If you let off the brake and it acts differently, then maybe you have a vacuum leak in your brake booster line.

Mark helpful
220,965

Rowefast answered 8 years ago

Hard starting is an indication of leaky fuel injectors, spider lines, and fuel regulator. What size is the motor? So what you do is hook up a fuel pressure gauge to the Schrader valve, then just cycle the key on off until it builds up pressure, should be 56 to 63 lbs. then let it sit with the key off, now just watch the gauge for 3 minutes, the fuel pressure should not drop off more than 5 lbs. If it does, then the injector assembly would need to be replaced as a unit.

Mark helpful

Your Answer:

Related Questions

  • Trouble Starting/ Engine dies once in awhile while stopped at a light 2 Answers

    My truck will start just fine after sitting for awhile (i.e. overnight), but if the engine is shut off and I try to start it back up in 5 minutes, 10 minutes, 30 minutes later, its hard to start and t...

    1999 GMC Sierra 1500

    -

    Maintenance & Repair

  • All warning lights light engine dies 1 Answer

    I have a 2000 GMC Sierra 1500 5.3 I'll be driving down the highway when suddenly all my warning lights and both turn signal indicators light ( even 4 wheel drive light and I don't have 4 wheel) t...

    2000 GMC Sierra 1500 SLE Standard Cab LB

    -

    Maintenance & Repair

  • My 05 GMC Sierra air conditioner blows out warm air once in a while 2 Answers

    My air conditioner blows out warm air once in a while

    2005 GMC Sierra 1500 SLE 4WD Crew Cab SB

    -

    Maintenance & Repair

  • Engin dies at idle 1 Answer

    My 1994 4.3 v six runes rough at temperature and dies for no reason Ive replaced a cap roter plugs wires fuel filter and pump. Egr seems ok I think it's egr sylinoid.

    1994 GMC Sierra 1500 C1500 SL Standard Cab LB

    -

    Maintenance & Repair

  • Ok I have a 1994 GMC 1500 sierra 5.0 305 it dies in gear sound awesome in idle but dies if not on gas 3 Answers

    Ok I have a 1994 GMC 1500 sierra 5.0 305 it dies in gear sound awesome in idle but dies have changed the tps,the EGR Vacuum Solenoid the Idle Air Control Valve , TBI Base Gasket,Fuel Pressure Regulat...

    1993 GMC Sierra 1500 C1500 Extended Cab LB

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

1999 GMC Sierra 1500

Write a car review

Review another car

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,340
  • #2
    dragonflyoffshore
    Reputation
    11,500
  • #3
    John Saffrahn
    Reputation
    11,440
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,193 Great Deals out of 131,957 listings starting at $1,000
Used Ford F-150
6,060 Great Deals out of 130,219 listings starting at $1,500
Used Toyota Tundra
1,080 Great Deals out of 32,836 listings starting at $2,700
Used Chevrolet Silverado 2500HD
1,062 Great Deals out of 30,683 listings starting at $1,350
Used Toyota Tacoma
1,934 Great Deals out of 31,699 listings starting at $3,500
Used GMC Yukon
670 Great Deals out of 11,248 listings starting at $2,241
Used Dodge RAM 1500
101 Great Deals out of 1,543 listings starting at $1,100
Used Chevrolet Tahoe
1,069 Great Deals out of 20,056 listings starting at $1,300
Used Ford F-250 Super Duty
1,413 Great Deals out of 42,068 listings starting at $550
Used Chevrolet Camaro
600 Great Deals out of 9,406 listings starting at $2,150

Used Cars for Sale

2024 GMC Sierra 1500 For Sale
75 Great Deals out of 43,772 listings starting at $28,434
2023 GMC Sierra 1500 For Sale
277 Great Deals out of 4,746 listings starting at $30,985
2022 GMC Sierra 1500 For Sale
179 Great Deals out of 1,652 listings starting at $28,590
2021 GMC Sierra 1500 For Sale
306 Great Deals out of 3,947 listings starting at $19,000
2020 GMC Sierra 1500 For Sale
202 Great Deals out of 2,376 listings starting at $17,990

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. Content will be removed if CarGurus becomes aware that it violates our policies.