Question about 2003 Chevrolet Impala

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2003 impala starts and stalls

When cold the engine starts and runs a few seconds then stalls

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 6982 Answers

SOURCE: 95 impala lt1 will stall when warm and not start

On the plus side, when you are finished, you will have a new control system! On the negative side, you just spent more money on parts than if you'd have just taken it to a dealer! I hope you tested those components and determined they have failed. Any codes?
Seems like the only thing you missed is the coil and the temp sending unit (just for laughs, unplug it and see if it stalls out at the same time), or possibly a security system malfunction. Get a decent volt/ohmeter and a vehicle specific manual such as chiltons or haynes. Do some testing, hot and cold and compare your results.You need to determine what is shutting down (fuel, spark or both) Once you develop a "picture" regarding what is happening, you will be more able to find a solution. I can't give you a "fix" on this one only because to properly identify the problem, I'd need to do the same testing I suggested.
good luck

Posted on Sep 03, 2009

  • 753 Answers

SOURCE: 98 Camaro 3.8 V6 stalls when started w/cold engine

Sounds like your throttle body and throttle plate are full of carbon.You also have a idle air control motor with a pintle on the end that gets carbon on them.Go to your local parts store and get a can of throttle body cleaner and a old tooth brush and clean throttle body and plate and if you can remove the IAC and clean the pintle and bore. that should take care of your stalling.

Posted on Nov 05, 2009

motor1258
  • 6674 Answers

SOURCE: my 2003 impala with the 3.8 v6 does not start on

If turning the key just to on position,(not start) once before trying to start doesn't help in that situation, I'd suspect a fuel injector(s) may be leaking down when engine shut off, and basically causing an engine flooded condition. You may get lucky with a good injector flushing done by professionals, but a fuel pressure test should confirm my suspicions.

Posted on Dec 21, 2009

  • 1 Answer

SOURCE: 2003 chevy impala ls starts then stalls

I have replaced the radiator in my 2003 Chevrolet Impala LS. The car started running hot and shut down. Took it to a radiator shop and found a crack in the radiator. I have replaced 2 thermostats in the car already. I noticed water running from under my car today and it seems it was coming back out of the overflow. I am stumped as to what is going on with this car.

Posted on Jul 02, 2010

  • 1565 Answers

SOURCE: 2004 chevorlet impala ls engine cut off after a

idle air speed motor might be gummed up. it controls your idle speed. remove and clean with spray carb cleaner to see if symptoms improve. Other problems could be vacuum leak or stuck EGR valve or PCV valve.

Posted on Sep 07, 2010

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1 Answer

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.

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Stalls when cold


To be honest with you, there are a few things that can cause stalls when the weather is cold. Do you have a check engine light on? How long has it been since you checked the plugs/coils and wires? It could be a few things. I will try to help you the best I can. Please send some more information over and we will get started.

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I had this problem for quite few years, changed the oil on tranny added some lucas, it did not help!, left it like that, few monthes later started to stall at while accelerating and check engine came up, scanned it with computer, it turned to be Mass Air Flow sensor causing the stalling, finally found one from junk yard for $40 since i replaced that MAF the tranny stopped doing that. try this it might work, and let me know.

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03 chevy impala ls starts and then dies immediately


Check the fuel pressure regulator. Its next to the throttle boby and has a vacumm hose connected.

Oct 22, 2008 | 2003 Chevrolet Impala

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2003 chevy impala ls starts then stalls


I have replaced the radiator in my 2003 Chevrolet Impala LS. The car started running hot and shut down. Took it to a radiator shop and found a crack in the radiator. I have replaced 2 thermostats in the car already. I noticed water running from under my car today and it seems it was coming back out of the overflow. I am stumped as to what is going on with this car.

Jun 18, 2008 | 2003 Chevrolet Impala

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