I'm having an issue with my 07 GP. This can happen over a period of a few days or may not happen for a month. After driving for usually more than 30 minutes the engine light will come on, I hear warning chimes and the display flashes REDUCED ENGINE POWER. This has happened about 10 times in the last 4 months. Also, it always happens at a stop, never when the car is in motion and always when the car is at full operating temperature. It does seem to happen while stuck in bumper to bumper traffic which is why I seem to think it may have to do with something possibly heating up.Just before the engine light comes on, the idle will increase approx. 400-500 RPM. Car goes into limp mode, no response from accelerator pedal and idles very rough at around 1500 RPM.
So I let the car sit for 5 minutes... repeatedly turn the ignition on and off a few times and it starts up. I go on my merry way car drives perfect and it does not do it again. Engine light will stay on for a while then goes off. This may happen again the next day or not for a month.
Engine code P0507- idle air control higher than expected. Now i've read of other people having similar issues but able to still drive the car at a reduced speed.I can put my pedal to the floor with absolutely no response. Also the car doesn't stall out, will just shake, rattle and roll...
I love the car. My 5th GP but if I can't get to the bottom of this, she goes up for sale. Really hoping someone can help me with this.
