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2006 pontiac g6 gt having trouble running in cold weather

The car's been suffering from problem with Engine Power Reduced on display for a few months. It only has this problem in cold weather. Error codes showed TPS Sensor issue earlier, but now scanner won't even connect to computer. Starts up and runs fine in warmer weather. Now won't start at all on some cold mornings. Couldn't run heat or defrost while driving or ENGINE POWER REDUCED would display then would lose power. Engine would continue running, but gas pedal wouldn't respond at all. Had water leak at one time that dripped over driver's side door, but only when rain was heavy and for a long time. Someone mentioned that may be causing the problem. Where do I start?

Posted by Anonymous on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 508 Answers

SOURCE: 2002 reduced engine power light

You have some kind of ECU problem. You will need to hook to the diagnostic port to find the problem. Your vehicle has gone into limp mode. This enables the vehicle to run, but at a diminished level until you can seek help for the problem. Do not continue to drive it this way as you may cause damage to the engine depending on the nature of the problem.

Posted on Feb 17, 2009

  • 14036 Answers

SOURCE: Message ' Reduced engine performance'

sound like transmission slipping .fuel filter clogged.turbo stop woking.dirty fuel injectors.

Posted on Apr 16, 2009

  • 1 Answer

SOURCE: Reduced power code comes up and my truck stalls.

I had the same problem, and the solution was cleaning the throttle body, it does need to be completely removed to be cleaned thoroughly. I just used some brake cleaner on a rag to clean off all the carbon deposits. A friend of mine who is a dealer tech had only seen this trouble code once, and this was the solution. So far, my light has not come back on and the truck is running alot better at idle.

Posted on Aug 14, 2009

  • 25 Answers

SOURCE: chevy malibu displays engine power reduced

It's fuel related, check your fuel filter to see if it's clogged, let me know. Good luck, Jim

Posted on Sep 10, 2009

SOURCE: reduced engine power on

The traction control uses the speed sensor in the transmission and the wheel speed sensors to determine wheel spin. If a wheel spins braking is applied to it so that the power can be transferred to the other wheels. At some point the ECU detected a gross disagreement between the sensors and so as a precaution has entered into a limp home mode. On some systems if the fault is in error it can be cleared by putting the car into drive and moving forward a meter, putting in reverse and going a back a meter and doing this three times. If one or other of the sensors are faulty this process will not allow the error to be cleared. You need to check or have checked the error codes and the speed sensors.

Posted on May 28, 2010

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My engine speed reduced light came on along with traction turned off on my 2009 Pontiac g6. when i accelerate it jerks.

Reduced engine power on GM vehicles has to do with the electronic throttle control .( Electronics ) Your best bet is to take your vehicle to a qualified repair shop or a GM dealer ! GM Reduced Engine Power Mystery Solved 04 Silverado REDUCED ENGINE POWER Case Study Part 1

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Your catalytic converters may be plugged. They have had problems out of the converters on the G6s. Probably have to take it to a mechanic, but im going to forewarn you, a catalytic converter for a G6 is around $1,000.00 each, and if its a V6 theres two converters. What I did was went on ebay and I found 2 brand new converters, one was $227.00 and the other $238.00 free shipping on that one, and they also have remanufactures converters too.

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My car idles rough and jerks around at stop lights and such. When I have the AC on it is even worse. When the temps outside are cooler it runs better and hotter it gets real bad. I don't remember the exact...

If it runs badly in the hotter temperatures you may be having trouble with your fuel pump. When gas in the fuel tank gets hot (yes it does not stay cold in hot weather) the heat will transfer to the fuel pump thereby causing the metal parts to slightly expand, especially in a pump that is old and the pump output pressure can drop causing less fuel pressure to the injectors thereby causing the car to run badly on low fuel pressure.

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Knowing what code or codes that are being set will show exactly where the problem is... Post the codes or go to Auto Zone and they will check the codes for free and tell you exactly they are pointing to.

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1 Answer

Engine power reduced

If the warning liught come on, I suggest scanned the computer car in order to know what fautl code is stored there; note this code num ber and send us for other details.

Aug 23, 2012 | 2006 Pontiac G6

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when you have the fault codes read to find the exact sensor failure or cause , have it fixed then reset the ecm as the ecm will reduce the performance(limp mode) for safety reasons

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May be errant codes from losing power, erase them and see if they come back - [ I'm betting they won't.]

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1 Answer

What does it mean when the power steering trouble light comes on over the radio of a 2006 pontiac g6

well... if you have electric power steering (no reservoir located in engine), you have a common problem that affects almost all owners with this type of cheap steering system (expensive to fix though)
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May 20, 2010 | 2006 Pontiac G6

1 Answer

I have a 2006 Pontiac G6 where do i refill the power Steering fuild

hi some G6's and i think it's only GT's with a 3.9 liter eng.and the GXP wvith the 3.9 have hydrualic power steering the rest have ELECTRIC POWER STEERING
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I cannot get the Change Oil Soon message to reset on a Pontiac G6

Chevrolet Malibu, Malibu Maxx 2004-06; 2006 HHR, Cobalt, Pontiac G6, Solstice
Turn ignition to run engine off. Display OIL LIFE RESET in the Driver Information Center (DIC). Press and hold the ENTER button for at least one second. An ACKNOWLEDGED’ display message will appear for three second or until the next button is pressed. This will tell you the system has been reset. Turn the key to OFF. If the “CHANGE ENGINE OIL” message comes back on when you start your vehicle, the engine oil life system has not reset. Repeat the procedure.

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