My Pontiac G6 won't accelerate at all

10

Asked by Jul 02, 2015 at 08:40 PM about the 2006 Pontiac G6 Base V6

Question type: Maintenance & Repair

I have a 2006 Pontiac G6 with about 110,000 miles on it.  I had the oil changed and after
I parked it, it would not accelerate at all when stepping on the gas pedal.  I put a new
throttle body on and problem still exist.  It starts and idles rough, will go into gear, no
acceleration at all.

18 Answers

1,855

Is the tps new (throttle position sensor)?

2 people found this helpful.
1,855

If you can pressure test file pump.

10

The throttle position sensor comes on the new throttle body as one unit

1 people found this helpful.
1,855

Check fuel pressure.

1 people found this helpful.
22,210

No check engine light ?

10

Engine light is on codes: Current Fault Log ------------------ P0030: HO2S Heater Control Circuit (Bank 1 Sensor 1) P0036: HO2S Heater Control Circuit (Bank 1 Sensor 2) P0050: HO2S Heater Control Circuit (Bank 2 Sensor 1) P0056: HO2S Heater Control Circuit (Bank 2 Sensor 2) P0068: Unknown code - More information may be available on the web P0102: Mass or Volume Air Flow Circuit Low Input P0443: Evaporative Emission Control System Purge Control Valve Circuit U0107: Unknown code - More information may be available on the web Pending Fault Log ------------------ P0053: Unknown code - More information may be available on the web P0054: Unknown code - More information may be available on the web P0059: Unknown code - More information may be available on the web P0060: Unknown code - More information may be

22,210

Do a ( Exhaust System back pressure test ) you can get this kit at most parts stores. If your catalytic converter is clogged will cause the same problems you are having with your vehicle.

6 people found this helpful.
30

Frank-- how did this turn out? I am having the same problem and need help.

3 people found this helpful.
20

Im having the same issue what did u do ?

2 people found this helpful.
22,210

Check for a blown ( ETCS ) Electronic Throttle Control System fuse.

3 people found this helpful.

Were the Etcs control system

10

Try changing the accelerator pedal sensor

1 people found this helpful.

Did you have any luck cause my car is kinda doing the same thing I need help

I have the same problem but the difference with my is the car drives max 40 but I can’t make it drive with the pedal it drives on it’s own I press the pedal and doesn’t go any faster. Does anyone know what it is

Change ur tpps.

I have a 2008 Pontiac G6 GT 3.5L - 160,000 miles. Check engine light came on, codes were : P0420 Catalyst System Low Efficiency (Bank 1) P0101 MAF Sensor Performance P0496 EVAP System No Flow During Purge My car deteriorated within a week. It would not accelerate past 40mph when pushing the pedal, it would increase slowly to 60-65mph on its own slow pace. A couple days later, it went from 60 to 40mph and had a horrible smell. Towed to a shop, there was an exhaust restriction. Ended up being the large catalytic converter. It was clogged (due to the guts of one of the small ones blowing out into it from what I understood). I hope this helps. This car has been a nightmare, leaks, electrically going haywire, etc.

My wife bought a 2008 G6 and it drove fine. After a while, it started losing power. Check engine light was on so she took it to Autozone. It spit out a TON of codes! They said it was the ECM. So i bought one and it had to be programmed at the Dealership. When i picked it up, they said there was nothing wrong with the old ECM. I couldn't return it because it was programmed and installed. It still had a loss of power when they test drove it. They said it seemed to be a catalytic coverter problem. I am going to change the front Cat and Oxygen sensor. If it doesn't fix it, i will change the rear Cat and Oxygen sensor. Hopefully i will have some good news for you guys.

10

My problem ended up being a short in the wiring harness...cleaned and spliced the bad wiring and not a problem since. I can't say it was an easy find, though.

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