Question about 2004 Chevrolet Impala

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2004 chevy impala engine surges and cuts off while driving. We changed the fuel pump and checked all of the sensors,

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

fixincars
  • 335 Answers

SOURCE: 1993 pontiac grand prix 3.1 liter

the 3.1 had some EGR problems, EGR valve stuck open, blown diaphrams, Plugged passages Im not saying that is all your problems and I believe yours has whats called a linear EGR about $350.00 from the dealer (and that is the only place you ever consider buying such a critical part for the emissions system regardless of the cost)
That car is so antiquated as far as computers go that relying on the codes is nearly pointless! Map code can set because of low engine vacuum which you will have with a poor running engine, Check for 5 volt reference voltage at the TPS and MAP with the key on and engine off if no 5 volt reference I suspect a Computer. Computer Ground is on the Thermostat housing and needs to be clean and secure.
There is a legit test in the GM factory manual called the TAP TEST take the ECM (computer) and slap it with an open hand, if the symptoms change the ECM is bad it's very common in the early-mid 90s for the computers to go bad in one way or another the circuit boards come loose and suffer also from cold solder joints.
Make sure the wires are on the correct plugs and hopefuly you used factory plugs and wires and No split fire or bosch plugs only AC delco
Make sure you have good spark on all 6 cylinders.
Contact me at fixincars@yahoo.com with the results and any feedback or questions

Posted on Sep 19, 2008

  • 3 Answers

SOURCE: Chevy 1/2 ton 2wd 4.3 vortec rough idle tried everything I know

I had the same problem with my 96 Chevy 4.3. It idled rough enough to shake the truck at a stop. It revved up fine but sputtered on take off. My truck did not want to stay in overdrive because of the low rev. I changed cap, rotor, plugs, wires and this did nothing. Finally I took the intake off and found corrosion on the side intake gaskets near the rear of the engine causing a vacuum leak.

Posted on Nov 11, 2008

latoss101
  • 47 Answers

SOURCE: gdi 1800 cedia wagon-odometer 80,000km exact, starting, no power

yes

Posted on Jan 03, 2009

ftw1952
  • 10319 Answers

SOURCE: Where are the door sensors

inner door latch assemblies hold these sensors

Posted on May 24, 2009

  • 14036 Answers

SOURCE: My 1998 Mercury villager van 6 cylinder 3.0eng keeps cutting off

it could be faulty fuel pump or coil pack transistor.

Posted on Dec 10, 2009

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1 Answer

I have a 2006 Impala the engine is surging at idle and when I driving


Check the vacuum hoses for a leak.

2006 Chevy Impala LS 3.5L Surge Under Load - YouTube

? 3:09
www.youtube.com/watch?v=sD-swFhMORM
Jan 22, 2013 - Uploaded by Gary Castle, Jr
Surge while driving. ... 2006 Chevy Impala LS 3.5L Surge Under Load ... How To Fix Or Prevent Stalling, Surging Or Rough Idle, Cleaning ...

Oct 02, 2015 | Cars & Trucks

1 Answer

Chevy impala cuts off while driving


Check for any stored engine codes, this may give you an idea of any problems that may cause your complaint. Possible crank position sensor, cam position sensor or ignition module would cause a 'die in flight' situation.

Dec 22, 2013 | 2005 Chevrolet Impala

1 Answer

Impala o2 sensor


1. Reduced fuel economy
2. Increased exhaust emissions
3. Poor engine performance
4. Engine check light appears
5. Engine stalls during idling
6. A rotten egg odour emitting from the exhaust
7. Your engine surges or hesitates
8. Rich mixture

Jun 03, 2013 | Cars & Trucks

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

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Loss of acceleration?

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

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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

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How exactly Vehicles Accelerator Pump Diaphragm Works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html

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2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html

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2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End?

http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html

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Wheel hop under hard acceleration?

http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html

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2009 Chevy impala accelerator pedal sensor?

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

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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

Check engine light comes on. RPMs surge and sometimes engine dies when idling after engine is fully warmed up. Car hesitates at times. Car will jump or **** at times when driving at highway speeds when...


Mine was doing that also.. We changed the two EGR valves, changed spark plugs and wires, and finally cleaned the Mass Air flow Sensor with carburetor cleaner. That seemed to helped the most. You have to take the sensor off to do it.. you can find a youtube video that explains it. Now all I have to do is figure out why my car's RPM's surge when slowing down.

Jun 22, 2011 | 2000 Chevrolet Impala

1 Answer

I have a 2002 chevy impala, I bought the car in december 2008 since i bought it Ive had to change the same o2 sensor about 5 times, the last time i had it changed the engine light came back on 4 days later...


Couple of notes - poor grade of fuel or additives can be coating O2 sensors. Next, when changing sensors are you disconnecting battery? If not a power surge can damage sensor and lastly check wiring harness and make sure wires are all clean and not scared along the way - could be shorting out.

Jan 30, 2011 | 2002 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

3 Answers

05 Impala missfire code 301 have changed


check intake for vaccum leaks,the gasket also and egr valve, thats alot of parts to have replaced without diagnosing first, if there are no fuel leaks and you said all injectors were replaced then you have a defective fuel pump, also these engines had misfire problem because of dirty injector but you replaced them so count that out. good luck.

Nov 02, 2009 | 2003 Chevrolet Impala

2 Answers

2004 Chevy Impala Keeps Stalling


check all the ground cables and wires.make sure that the ground cable going to the engine is clean and tight.

Mar 15, 2009 | 2004 Chevrolet Impala

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