Question about 2000 GMC Yukon

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My 2000 Yukon engine hesitate

My 2000 Yukon hesitate or something cuts off when I take my feet off the gas. It also sometimes hesitate when it is idling, it tries to cut off but it doesn't.

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  • GMC Master
  • 3,433 Answers

Chk MAF sensor (mass air flow) first sensor in ducting coming out of air filter.

* Use only one foot on the gas peddle - Just teasing. :)

Posted on May 22, 2009

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Posted on Jan 02, 2017

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Hesitates when driving, doesn't start first time, reeks of fumes when tank full & caped, engine cuts out when gas cap removed under half tank full. dummy light me always on. please help me TY


It seems you have an extremely scary and dangerous situation going on, you should never smell gas ....anytime. .

Because this is so far out of the ball park, you just have to get it looked at by a pro.

Mar 18, 2015 | 1998 GMC Yukon

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When maintaining speed of about 50mph,2004 pacifica hesitates and will cut off while in park sometimes.check engine light is not on


ENGINE HESITATES WHILE ACCELERATION

LOSS OF ACCELERATION


It can be fuel pressure issue or it's the problem with accelerator pedal or its clogged filters causing there.

There are many other possibilities. I suggest you to go through the list of help links mentioned below, these will help you to confirm where the actual fault lies: -------

Jerks and Hesitates During Acceleration?

http://technoanswers.blogspot.in/2012/07/2004-dodge-town-country-jerks-and.html

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Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html

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Headlights flickering and car hesitates to start?

http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html

--------

How exactly the Vehicles Accelerator Cable works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html

-------------

How exactly Vehicles Accelerator Pump Diaphragm Works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html

--------

2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html

---------

2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End?

http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html

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Wheel hop under hard acceleration?

http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html

--------

2009 Chevy impala accelerator pedal sensor?

http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

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Nissan Pathfinder stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

--------

Acceleration lag problem?

http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html

-------------

These details will help.

Thanks.

Nov 28, 2012 | Chrysler Pacifica Cars & Trucks

1 Answer

2000 GMC Yukon Denali will start And then shutoff immediately. Why?


My guess would be something electrical that is not working due to the temp. Like a relay.
A relay could loose magnetic power for a few tries then start working.
Or the engine temp sensor could be out of calib and telling the computer the temp is 90 degrees when it is only 50.
You could use a scanner to read the sensors and look for something not right.
Without knowing what is missing in the equation its going to be tough to diagnose it. You really need to know if you are loosing voltage to the coil or the injectors or if the fuel mixture is too lean, etc.

Sep 27, 2012 | 2000 GMC Yukon Denali

1 Answer

2002 Yukon Hesitation when starting- No checking engine lights!!


This can be fuel pump related or just fuel filter related, spark plugs and injectors.
When engine is cold vaporization of gasoline is minimum. When fuel vapor is less than required and the fuel mixture is not ideal, ignition happens harder than it does under ideal running conditions of engine. When fuel pups is sweak, or filter is limiting, or fuel injectors are not injecting gasoline with improper pattern inside engine, or just becasue of corroded spark plugs, cold engine faces difficulties during first ignition.

PS: sometimes car starts and stalls.it fails to start once more. this can be a sign of broken crank position sensor. FYI.

Nov 18, 2011 | 2001 GMC Yukon Denali

2 Answers

My 2000 expedition hesitates when my gas gets low in the tank


i had this happen over and over then expedition started cutting off when making u-turns and from there it got worse hesitating all the time... finally it ended up being trash in my fuel pump!!!
i had to have my fuel pump replaced.. my suggestion is to get it to a mechanic asap!!!!!

Jun 04, 2010 | 2000 Ford Expedition

1 Answer

At about 4000 RPM the check engine light flashes and there is hesitation. The read out says misfire in #3. I have a 2000 GMC Yukon, During regular speeds it is fine. There also seams to be a hesitation...


Your catylatic converter may be clogged if your loosing power or top speed is less than it was. You can check this when its running with a battery operated infared heat gauge. the temperature of the muffler should be around the same temp. as the catylatic converter.

Sep 24, 2009 | 2000 GMC Yukon

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