Question about 2004 Chevrolet Impala

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Accleleration issues My sister in law is having a horrible time with her 2004 Impala. It doesn't accelerate well and it is idled pretty high. She has had the Spark plugs and wires replaced as well as the fuel pump and filter and the problem has not gotten better. My brother thinks it may be that her cat is clogged. Any suggestions?

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It's very possible the cat is plugged, only way to tell is to drill a small hole in the exhaust right before the cat. I the exhaust is LOUD coming out of the hole when you start it up, it means there is alot of pressure building up in front of the convertor, and plugged. with the cat plugged the car will run like ****, jerky, no acceleration, etc. try to run the car down the road at 50 MPH and just BARELY touch the gas, if it seems ok, press on the gas, if the cat is plugged it will ****.

Posted on Oct 28, 2009

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Your tranny is slipping

Posted on Mar 12, 2009

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92 NISSAN WITH BOGGING AT 2800 3500 RPM AND AT LEVEL SPEED 4CYL AND 5 SPEED


For this types of problem,there are few help inks to troubleshoot the problem.Click the link below to go through the troubleshooting procedure to resolve the issues :----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-----------van idles rough? http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html
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------------Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
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------------Engine Backfires? http://technoanswers.blogspot.in/2012/02/jeep-backfires.html----------- Nissan stalls and bucks on Acceleration?

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

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Nissan Pathfinder Backfires? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------How to adjust rpm? http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
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What is the proper operating tempurature for a 2004 impala also the vehicle started excellerating on its own


It sounds like he messed with your idle bar. Your idle is set to fast. It needs to be ajusted.

Nov 08, 2011 | 2004 Chevrolet Impala

1 Answer

My 2004 chevy impala has an intermittent problem. After sitting at idle for a while it begins to idle very rough and occasionally dies. It seems to clear up after reving the engine a couple of times. When...


Do you have a check engine light on and what are the codes if any? Your symptoms describe 4 things I have seen go bad on this car. A bad cat converter can cause this. A bas fuel pressure regulator can cause this. Pull vacum hose of fuel pressure regulator and inspect for liquid fuel. If there is any than the part needs replaced. A bad mas air flow sensor can also create this problem. A weak fuel pump can also cause this.

Oct 16, 2010 | 2004 Chevrolet Impala

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'02 impala ls 3.8L. lose all acceleration, at heavy acceleration and/or 4000rpms. then sputters and chugs.


I had the same on my 3.8L 2002 Impala. Right arround 3500-4000rpms with moderate to high acceleration; shaking and bucking. With light acceleration, it seemed OK. And no "check engine" light.
It was the MAF sensor. I ended up replacing it, but it was pretty expensive $150+?
You might try cleaning yours first with MAF spray cleaner.

It is located on the throttle body under the engine cover.
Here is picture of it: http://i2.photobucket.com/albums/y48/ZeeVert/2002%20Impala/ac%20condensor/MAFsensorcopy.jpg
I was working on the a/c so some other parts were removed.

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WHERE IS THE FUEL FILTER LOCATED ON A 2004 HYUNDAI TIBURON? WOULD ROUGH IDLING BE A SYMPTOM OF A BAD FUEL FILTER? 63,000 ORIGINAL MILES, ORIGINAL FUEL FILTER


Usually plugged fuel filters and/or bad pumps cause loss of power at the high end (full throttle) when you are sucking down the fuel not so much at the low end.

Rough idles can be a lot of things, usually something to do with the fuel mixture or timings. Dirty injectors, distributor problems, streatched out timing chain/belts... those are a few common rough idle issues.

Has the fuel economy gone down? Does it still have good acceleration?

Peace,

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2 Answers

Loss of power on acceleration. Put new fuel


Probably the ignition timing is not advancing the spark on acceleration or high rpm's.

That is the job of the ECM (Electronic Control Module). Check it / Replace it.

Hope this helps!

Sep 17, 2009 | 2003 Chevrolet Impala

1 Answer

I know my santa fe, and i started listening a horrible humming


what kind of noise? if rattling noise and noiser when you accelerate, either in idle position or while moving, then you need to overhaul. if high pitch sound and noiser when you accelerate, then check you bearing in timing belt mechanism

Aug 02, 2009 | 2004 Hyundai Santa Fe

2 Answers

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Yes, the sensor is the first thing you should replace.

May 08, 2009 | 2004 Pontiac Grand Am

2 Answers

2004 Impala issues


take it to a muffler shop and have them test the cat. they should test it for free.

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