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I have a 1999 chevy blazier and the service engine light is on when I accelerate the truck doesnt want to go it hesitates ! even when I try to feather the gas peddle it goes a little better ! and up hills its even worse !

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The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.

When the Check Engine light (or Service Engine Soon or small picture of an engine) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.


Posted on Feb 11, 2012

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: ACCELERATING PROBLEMS : 2001 supercrew 4x4

it's possible your computer is going out-- had a later model doing the same and then finally would quit.  i'd stop, pour ice water on the brain under the hood and then away we would go.  had to change it out.

Posted on Sep 10, 2008

diths_kri
  • 67 Answers

SOURCE: 1986 chevrolet silverado truck engine hesitates when accelarating

Along with the vacuume leaks I would check the carb. The accelerator pump might be out of adjustment or something else in the carb. Currently I have the same problem with mine and I just adjusted it and for 1 day so far it's ran fine but I have a holley on mine. Carb may be dirty also.

Posted on Jan 07, 2009

  • 109 Answers

SOURCE: Missing and backfiring during acceleration and climbing hills.

Could be vapor lock in the fuel system. Next time it does this, stop and try removing the fuel filler cap... Hope this helps...;-)

Posted on Apr 14, 2009

wilsodfarm
  • 986 Answers

SOURCE: 1999 chevy truck 1500 is sluggish and hesitates

sound like your catilitic converter is plugged up.

Posted on Jul 27, 2009

  • 1129 Answers

SOURCE: My 1993 Buick Roadmaster hesitates and jumps going up hills.

Have the fuel pressure checked the fuel pressure regulator valve may be acting up, it should be at 30 psi or greater at idle. It may also be a Oxygen sensor causing the car to run lean on acceleration, if it has never been changed have the primary or bank 1 O2 sensor changed out they should be done every 60,000 - 80,000 miles. If all this has been done there may be a vacuum leak somewher in the system and by the way all vacuum hoses should have been checked during the tune up.

Posted on Sep 22, 2009

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3 Answers

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

-----------

Loss of acceleration?

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

---------

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

---------

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

---------

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

My truck is lagging when I drive.. Everthing works it just feels slower then normal.. It's a Chevy Tahoe 1999 2 door..


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: -------



-----------


Acceleration lag problem?

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

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

Jerks and Hesitates During Acceleration?

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

-----------

Loss of acceleration?

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

---------

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

---------

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

---------

Nissan Pathfinder stalls and bucks on Acceleration?

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

--------

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

These details will help.

Thanks.

Nov 27, 2012 | Cars & Trucks

1 Answer

Hesitation in acceleration


Could be low fuel pressure, a vac leak, or other problems.
Is the check engine light on ?

Sep 29, 2012 | 1999 Honda Accord

2 Answers

I have a 1999 chevy blazier service engine light is on and when accelleratingit doesnt want to go even if you feather it or keep the peddle to the floor ..what could be wrong ??


Most Bigger Autoparts stores will scan it for codes free of charge. Have that done first to pinpoint trouble better. If they can't steer you in right direction from there, get back to us with code(s) and we can better advise you. Cheaper & Faster that way, rather than replace items by guessing.

Feb 11, 2012 | Cars & Trucks

1 Answer

I have a 1999 Chrysler 300m that has started to hesitate slightly when accelerating. There is no engine warning light coming on, but I'd like to try an solve this problem before it becomes worse. Any...


no lite showing doesnt mean car is healthy-scan car 1 or 2 times for bad codes-thinc of a cars system like ur pc--of course physical things like gas pump-injectors or tuneup may effect

Feb 23, 2010 | 2004 Chrysler 300M

2 Answers

Hesitat when Accelerating


check your plugs and leads. do you think you may have dirty fuel?

Aug 04, 2009 | 2002 Chevrolet Malibu

2 Answers

How do we get the check engine oil light off of a 1999 chevy 6 liter


First turn the key to the run position, (not start). Push the gas pedal down to the floor 3 times within five seconds. Turn the key off and then cycle back on and start the truck. The indicator should flash five times and go out.
It may take a few tries.

Jul 21, 2009 | 1999 Chevrolet C2500

1 Answer

Once truck is started if i drive it has a lag


I would have the computer scanned ( no SERVICE LIGHTS right ? ) looking for an errant coolant sensor not telling the computer to give your vehicle a bit RICHER ( a little bit more fuel ), since it does start. Just has POOR cold drive away. Hope this helps

Apr 12, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Loss of power


You should have your cat. checked make sure there is no restrictions in your exhaust system.

Apr 11, 2009 | 1999 Chevrolet Tahoe

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