Question about 2003 Chevrolet Impala

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Which replacement parts do I need if the check engine diagnostic reads egr system default on a 2003 chevy impala

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Doesn't work that way

Diagnostic Codes, do not tell you
what is wrong or what to replace

You use the codes to find the system issues

Posted on Mar 26, 2011


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2003 chevy impala engine stalls whats the issues

When the actuator malfunctions, the engine gets no signal for idling speed and stops working. Clogged or restricted EGR Valve: If your EGR valve is clogged, dirty, or defective it can cause your car to stall, idle erratically, or sputter, depending on whether it is stuck open or closed. I would start there.

Feb 22, 2016 | 2003 Chevrolet Impala

2 Answers

I have a 2003 Chevy impala 3.4 Lthe check engine light is on it's really hard to start and if I'm at a stop light it will Stoll it runs really ruff I changed the spark plugs,fuel filter,coil,please help

Have the computer scanned for codes. If the light is on there are codes in the system. This will make it much easier to figure out.

Your local cal parts store may be able to get those codes for you. often times for free. DO NOT BUT ANYTHING THEY TRY TO SELL YOU! Post the codes in the comments below and I'll help you get this figured out.

Other options for getting codes.

OBDII code readers are available just about anywhere that sells tools or parts. A basic one will run you about $100.

your local repair shop will likely have a menu priced diagnostic fee. This includes pulling codes and testing of components to pinpoint the failure. You can figure about $100 for this service.

Feb 27, 2015 | 2003 Chevrolet Impala

1 Answer

I have a 2003 chevy impala i changed the egr valve and my check engine light is still coming on and a part store read my code and it said egr valve what else could be the problem

The code in the ECU might not have reset after you changed the EGR. Try unhooking the battery and let the car sit for a couple minutes and then hook it back up and see if the light goes away.

Mar 04, 2010 | 2003 Chevrolet Impala

1 Answer

The A/C blower motor quits working on my 2003 Chevy Impala, it does not have auto temp. The blower Motor, Resister and A/C Control Head have been replced. Is there a common problem with the system quitting...

If your check engine light is on have a obd diagnostic check at auto zone or advance if it is a fuse. check the fuses under the hood first may be blown.

Jan 09, 2010 | 2003 Chevrolet Impala

2 Answers

I have a 2003 Chevy Impala that is giving me problems. It's sputtering when idling and slowing down, has stalled a couple times at a traffic light. Sometimes has a knocking sound, when in reverse the...

I suggest changing your egr valve. I have a 03 impala with the same problem and check engine light came on and through the code for the egr valve. they are 154 at autozone

Dec 17, 2009 | 2003 Chevrolet Impala

1 Answer

Chevy Impala 2001 w/ 3.8L engine - EGR stuck open

there are a couple of things, first make sure there are not restriction in the exhaust, i know the dealer has had to replace converters under warranty because of this problem, then theres a reflesh program for the computer due to this problem, and lastly,run with egr off make sure it clean of carbon,carbon gets stuck in pintle sets check eng lightbut carbon then blows by so when you remove egr you see nothing, well start with these good luck.

Nov 28, 2009 | 2000 Chevrolet Impala

1 Answer

06 chevy impala v6 3.9 liter engine. Check engine

there is a large evaporative leak. keep away form ottozoo, they dont have the brain power to actually diagnose a light bulb., their job is to sell parts., if they sell you the wrong parts tough.Take it to a qualified repair shop that does a lot of GM work or the dealer.

Sep 25, 2009 | 2006 Chevrolet Impala

4 Answers

Loosing power

Wow, I just went through the same problem and guess what it was a clogged converter and a bad oxyegen sensor. The garaged fixed it up for me by putting an eco converter on it and a new O2 sensor. I have a 2003 Chevy Impala,V6 3.8 engine. Good Luck!!!!

Aug 18, 2008 | 2003 Chevrolet Impala

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