Question about 1999 GMC Yukon

1 Answer

After motor warms it misses and backfires

After motor warms it misses and has no power already replaced fuel filter,distubator cap,rotor button,and plug wires and no help

Posted by on

  • 2 more comments 
  • daisymay7620 May 07, 2010

    there is no engine light coming on

  • daisymay7620 May 07, 2010

    clean out the catalic converters alrady and no help

  • daisymay7620 May 11, 2010

    tried replacing the whole distubator with one out of a truck that we know was good and no help any other ideas

  • Anonymous May 11, 2010

    Now you see why throwing parts at it, didn't help. You need to know the vehicles systems and how to diagnose

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,050 Answers

You need to test the catalytic converter, these were a common problem. You can do this by removing the oxygen sensor in front of the cat and driving it. It will be noisy, but the open hole will allow excessive back pressure to escape and it will drive better if the exhaust is restricted.

Posted on May 07, 2010

  • Dave  C
    Dave C May 09, 2010

    I wouldn't feel too bad about replacing all the ignition components, that was really just a thorough tune up, As far as knowing the vehicles system and how to diagnose it, I've been doing this for 30 years with all the best equipment and I still get stumped, as do other technicians. Getting back to your problem, I know these vehicles had problems with the distributor assembly itself. I'm not saying that's what it is, but if you can somehow get another one to try, it may be the cause. I had one of these with the same problem and replaced the MAF sensor, honestly it was a guess, and it did not help at all, but if yours is like the one I had, the problem happens the instant the engine gets warm enough to enter closed loop. With mine, the distributor fixed it.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Want idle spit anp sputters when put on a machine it said can not find firing order it has new distuber,rotor,fuel filter.plugs and wires


it sounds like this didn`t happen until you replaced these items.i would recheck the firing order and make sure the wires are on the distributor cap correctly and in the order the rotor turns

Apr 12, 2011 | 1996 GMC Sonoma

1 Answer

97 dodge dakota. 2.5 , 5 speed, 2wd, 110k . I have replaced - dist. cap, rotor,wires, plugs, fuel pump, fuel filter, # 4 injector, tps, crank pos sensor, air filter. Truck will start and run fine until...


How about the pick up coil in the distributor? A trick we used to use back in the day was to tap the distributor housing with a hammer, key word tap. If the engine missed or stalled than the pick-up coil was replaced.

Oct 27, 2010 | 1997 Dodge Dakota

2 Answers

My 2000 blazer has a missing problem at cruising speeds


1999 4 3 misfiring
Did you find this related site in your forum search? It goes over a number of things that might help ... beyond the distributor/plugs/wires change out
Helpful?
Good luck with your troubleshooting

Feb 07, 2018 | 2000 Chevrolet Blazer

2 Answers

The car is running poorly and missing when hitting the gas pedal


Give it a good tune up. Change the cap and rotor, plugs. Make sure that the plug wires are in good shape and not broken from heat.

Apr 14, 2009 | 1989 Chevrolet Corvette

1 Answer

Car missing and backfiring


I'M not a pro but bro you need to check your dist cap and rotor botton and timing cap can be loose all that.

PEACE AND LOVE BRO.

Dec 27, 2008 | 1992 Acura Integra Hatchback

1 Answer

Honda Misses.


Pin point the dead hole and check that injector.

Dec 23, 2008 | 1995 Honda Accord

1 Answer

S10 pickup after warming up truck starts missing


You might have computer problems.

Does the check engine light come on when it starts to miss?


Nov 30, 2008 | 1987 Chevrolet S-10 Pickup

2 Answers

1994 Nissan Hardbody limited rpms when warm


HAVE YOUR EXHAUST CONVERTER CHECKED! IF IT'S BAD AND YOU HAVE IT REPLACED, DON'T LET THE ONE THAT REPLACE'S IT TAKE YOUR OLD ONE!!!!! IT'S WORTH ABOUT $250.00

May 19, 2008 | 1994 Nissan Pickup

Not finding what you are looking for?
1999 GMC Yukon Logo

Related Topics:

215 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

79865 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...