Question about 2001 Pontiac Sunfire

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I havce a 2000 pontiac sunfire and the trac off light came on and the check engine light is flashing. I changed spark plugs, cables, and an injector that was bad but the lights are still on. the car runs but shuts down once in a while. what do you think the problem might be?

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I can't remember what year sunfire's were effected but there was a update to reflash the PCM for a O2 sensor code
if the check engine light comes on it disables the traction control
i know before GM dealers were the only ones with the program to update the PCM
hope this helps

Posted on Nov 12, 2009

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I have a 2003 Pontiac sunfire and today while driving the check engine light started flashing and the trac off light came on. the car has a burning smell to it .got home and touched converter with paper...


with the check engine light flashing you have a code set in the pcm that you need to have checked out as the light will only flash if there is a problem that can cause damage to the motor,like a convertor problem or overfuelling problem.if the light came on and not flash there is a code but not a possible engine damaging problem.that is the difference.either way you need to have it checked at a shop by a tech.the trac off light will come on some cars if a certain code is set in the pcm to get the driver to have things checked out that could cause damage,its just the way the manufacture has set things up.this does not mean there isn`t a possible problem with the traction control system.

Nov 01, 2013 | 2003 Pontiac Sunfire

1 Answer

97 pontiac sunfire getting fire,can hear fuel pump changed fuel filter and spark plugs will turn over just wont start


did you check fuel pump relay also check your security system might be activated thinks its being stolen my daughters grand am does that once in awhile have to let it sit for 15 minuts with the key on on with out cranking it and then will start.

Feb 19, 2013 | 1997 Pontiac Sunfire

2 Answers

1996 Pontiac Sunfire engine shakes and acts like it wants the shut off when at stop light.


Sounds like you have a bad cylinder...
This could be due to a number of reasons...
No spark at one cylinder, due to a bad spark plug, coil, or wire.
No fuel due to a bad injector
Bad cylinder with low or no compression

Mar 18, 2011 | 2000 Pontiac Sunfire

1 Answer

Trac off light came on and off then stayed on while driving, p0203p0204 p0300 codes when scanned with little machine better read open circuts in both injectors loss of power


P0203 - Injector Circuit Malfunction Cylinder 3

Powertrain Control Module (PCM) or Electronic Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The PCM/ECM will trigger the P0203 code when the resistance or voltage drop at the injector #3 is out of specifications.

Causes:
- Open or shorted wiring harness to the injector #3
- Bad injector #3
- Bad PCM/ECM

Solutions:
- If damage, repair injector wire harness or connector
- Replace injector
- Replace PCM or ECM


P0204 - Injector Circuit Malfunction Cylinder 4

Same info as the P0203 DTC


P0300 - Random/Multiple Cylinder Misfire Detected

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crankshaft position (CKP) sensor (POS) signal to vary, Powertrain Control Module (PCM) or Electronic Control Module (ECM) can determine that a misfire is occurring.

Causes:
- Improper spark plug
- Insufficient compression
- Incorrect fuel pressure
- The injector circuit is open or shorted
- Fuel injectors may be faulty
- Intake air leak
- The ignition signal circuit is open or shorted

Solutions:
- Perform Injector Service
- Replace Spark Plugs
- Replace Injectors
- Replace Ignition Coils

Feb 03, 2011 | 2001 Pontiac Sunfire

2 Answers

Engine seems to be misfiring. Has good compression, new spark plugs,wires check out, good spark, timing good as well.


If all the spark plugs are sparking and the engine timing is ok, then it can only be a fuel problem. You should check the fuel injectors.

Feb 18, 2010 | 2000 Pontiac Sunfire

1 Answer

Is there a shut off switch ia 2000 pontiac sunfire if so where? the fuel pump is new plus i changed the spark plugs and wires the relay for fuel pump and changed coil cap. the fuel pump will come on if you...


check the pcm ignition fuse and the fuel pump injectors fuse.if all is good.your pcm could be the problem. the pcm it controls fuel pump.first have car hooked up to scanner to look for pcm failure code.

Nov 25, 2009 | 2000 Pontiac Sunfire

1 Answer

What all is needed for a tune up for a 2000 pontiac sunfire 2.2 l


oil and filter change
coolant ,due at 100k miles
spark plugs ,due at 100k miles
trans fluid and filter change
engine air filter
check all belts
check tires and brakes
check alignment....that should be about it really

Oct 26, 2009 | 2000 Pontiac Sunfire

1 Answer

2000 pontiac sunfire not getting gas --won't start


It is very likely the fuel pump in the gas tank has failed check the fuel pressure, u do this at the test port on the top of the engine near the fuel injector supply tube, it looks like a metal tire stem.

Mar 10, 2009 | 2000 Pontiac Sunfire

3 Answers

2002 pontiac sunfire has check engine light


Your problem is typical for these cars. The throttle position sensor is bad. Go to Auto Zone and have them check the codes to confirm this. i've seen this many times, that's usually the problem. It makes the car feel like the brakes are on. Hope this helps. Let me know. Phil

Jan 16, 2009 | 2000 Pontiac Sunfire

1 Answer

Misfire


Check to make sure the fuel injector is working on that cylinder, check the connector to the injector for a loose or damaged pin, get a NOID tester from a parts store and see if the injector flashes the NOID light while the engine is running or cranking.

Oct 13, 2008 | 2000 Pontiac Sunfire

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