Question about 2003 Chevrolet Monte Carlo

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Loss of power...2003 chevy monte carlo

Wont drive beyond 2000 rpm well....worse up hill...checked codes....egr valve replaced.....no more codes beside egr

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  • ejpnupe Dec 21, 2008

    When I try to accelerate, the vehicle stalls. RPMs will rev up but car slows down.

  • Anonymous Mar 20, 2014

    replace engine cradle

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Catalitic converter if car is under 80,000 miles or 8 yrs dealer must replace free i had same problem

Posted on Jan 10, 2009

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Ck fuel presure/posible plugged catalitic converter

Posted on Dec 26, 2008

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Yes plugged Converter. This will also cause an EGR code. Special policy adjustment for warranty may be covered to 10 years, 120k miles.

Posted on May 08, 2009

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My monte carlo will start but does not continue to run cannot put in drive it kills

Posted on Jul 19, 2011

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1 Answer

Cylinder one on monte carlo 2003


If the code is 301 it means there is no power from that cylinder. It could be a problem with the ignition, fuel injector, or something mechanical.

Dec 06, 2012 | 2003 Chevrolet Monte Carlo

1 Answer

Starts the car and it was sounding like a knocking sound and now its jus sounding like a eeerrrrrrrrrrrrrring sound and the gears wont shift.........1999 chevy monte carlo


egr valve causes rough idling and stalling problems.check engine oil level could have low oil pressure.have vechicle code scan could have bad knock sensor.

Jul 31, 2012 | 1999 Chevrolet Monte Carlo

1 Answer

Replaced Egr sensor on 2003 monte carlo but check engine light is still on throwing same code?


Inefficient air flow can be from the catalytic converter clogging up. This is the most likely cause. Soon you will have 02 codes

Aug 01, 2011 | 2003 Chevrolet Monte Carlo

1 Answer

My 03 monte carlo is very sluggish. The engine


P0404 Exhaust Gas Recirculation Circuit Range/Performance
P0502 Vehicle Speed Sensor Low Input
P0440 Evaporative Emission Control System Malfunction
hope that helps /a little beyond my expertise but theres your codes your looking for ;)

Feb 04, 2010 | 2003 Chevrolet Monte Carlo

1 Answer

My '03 monte carlo is very sluggish when going uphill or when passing. A GM technician had me replace the catalytic converter - no results. Any thoughts?


YOUR TRANSMISSION COULD BE SLIPPING.CHECK TRANSMISSION FLUID EGR VALVE NOT WORKING .A STOPPED UP FUEL FILTER.BAD PLUG WIRES - PLUGS -COILS- WILL EFFECT POWER.

Sep 06, 2009 | 2003 Chevrolet Monte Carlo

2 Answers

Power loss


Can't answer your last question but catalytic convertors that are just not working anymore won't cause any loss of power. However, if they have shattered inside (they are kind of a ceramic honeycomb) they can dump junk into the exhaust system that can eventually clog your muffler or resonator.
Checking whether this has happened isn't difficult; after the warm up of the engine, either you or a helper needs to listen to the exhaust note. If firing of the cylinders is still distinct, the system isn't clogged with shrapnel; if it seems to hiss at higher RPMs, it is likely clogged.
This effect is easy to miss; I've had two failures and when cold, the engine would pull fine because the chunks of ceramic would fall to the bottom of the muffler and glue together somewhat. Once hot and agitated, they would clog the muffler and cause a severe loss of power but the idle would be OK. A hill that I would normally pull at 70 MPH, I couldn't top at all; had to sit and wait for things to cool down before proceeding.
It also seems some engines appreciate a bit of back-pressure in the exhaust system because the car gained in mileage and pulling power for several thousand miles before the clog became critical causing the mileage to fall sharply along with the power.  

May 23, 2009 | 2003 Chevrolet Monte Carlo

1 Answer

2001 chevy monte carlo power loss


change fuel grade.if that dont do it. i reccamend a tune up

Oct 27, 2008 | 2001 Chevrolet Monte Carlo

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