Question about 2004 GMC Canyon

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2004 canyon idles funny at stop lights and mpg are down. when cold and stop at a light the heater or ac fan also slows down until you hit the gas? is this an oxygen sensor or a tune up problem

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I know this my sound funny but have the battery checked and replaced if even a little weak because it will mess with the computer on this newer things also have altanator checked,battery connections.can even cause one to not shift right.hope it helps.

Posted on Nov 12, 2010

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I had the same thing all I did is take the mass air flow sensor off and spray a good cleaner sensor cleaner and get all the built up off the inside and idle came back to normal.

Posted on May 31, 2014

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Posted on Jan 02, 2017

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2 Answers

Just put in brand new alternator 2 days ago. Now it wants to stall when slowing down and at intersections.


Have car scanned at autozone or similar. My guess is egr valve or IAC. Egr exhaust gas recirculating valve, IAC idle air ?ontrol valve.

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Check the idle air control on the throttle body it controls the rpms until it is warmed up. You can use a meter to check it.

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04 sedona belts moving slower when ac turned on and brake and battery light come on


is your car at an idle when the a/c is engaged it takes power to run this circuit your engine will slow down. most cars have a sensor that will increase you idle when a/c is engaged. this also compensates for the added drain on the alternator

Jul 07, 2012 | 2004 Kia Sedona

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I have 1999Chevy suburban with 6.5 turbo diesel motor.it idles up and down and when driving the gas pedal is real touchy Wat is the problem and were do i locate the problem


Check the help links related to this problem.Click the link below to go through its troubleshooting procedure :-----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html---------
Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html
-------Complete loss of brake pedal then all gets normal? http://repairhelpcenter.blogspot.com/2012/01/complete-loss-of-brake-pedal-then-all.html
------Car dies when gas pedal is pressed? http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html
--------Pushing on the gas pedal, but the car slows down? Gas pedal to the floor and the car slows down?

http://technoanswers.blogspot.in/2012/02/pushing-on-gas-pedal-but-car-slows-down.html

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After replacing brake rotors and pads, brake pedal remains on floor? http://technoanswers.blogspot.in/2012/02/after-replacing-brake-rotors-and-pads.html

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

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For rough idle issues and problem troubleshooting,go through the help links provided below :----- van idles rough?

http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html

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will not idle when cold?

http://technoanswers.blogspot.in/2012/02/ford-explorer-40-will-not-idle-when.html

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runs lean and idles rough?

http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html

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Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

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Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

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Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

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Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

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Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

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Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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This will help.

Thanks.

Mar 01, 2012 | 1999 GMC Suburban

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Ac/heater only works when I hit a bump


I have a 2009 gmc canyon how do I get to the wires

Feb 14, 2012 | 2004 Chrysler Town & Country

1 Answer

Car hesitates when slowing down


the same thing happened to me last week, turns out it was the idle valve that needed to be replaced...seems like some oil got inside and clogged it....

Feb 26, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

2004 gmc canyon fan moter for ac dont work


There is a fuse I would check first if you haven't tried that yet. They had problems with the switches in some of those vehicles. If you could take the control out and unpug then reattach the plug it may start working meaning the switch is bad.
You may have a bad fan motor. Do you have a test light to check for voltage at the motor itself?
Lastly, there is a resistor set that changes from low to high that may have one or more resistors burned out.
Dale

Dec 12, 2008 | 2004 GMC Canyon

1 Answer

AC-Funny smell when car slows or stopped.


You definitely need to get that checked by a pro. Don't fool around with a problem like that, it could be serious.

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