2005 Chevy Malibu LT (6 cyl 3.5L) Front Wheel Drive Automatic 67500 miles
Occasionally when attempting to start the vehicle it will either:
* Roll over and start, but hesitate and die the second after it starts
* Fail to roll over (less common)
* Roll over and start, fight a low idle and recover with the RPM jumping over 1.5 (this is without me ever touching the gas)
This tends to happen intermittently, in other words, not every start. The cranking sounds and feels strong... and no different from any other start. In fact, there are good number of times where it starts up fine. However, when it does show one of the two symptoms above, it is rather persistent unless you:
* In the case where it rolls over, give the car a little gas by stepping on the accelerator.
* Do a choke start (described in the manual as fas petal to the floor when starting the car)
* Wait 30sec or so and try again
Once the car is running, it's seems fine in all regards and has never stalled. Just recently another symptom arose. The car began to hesitate waiting idle at a red light only a minute after having started it. Hesitation was good enough to cause the car to rock. Light turned green, I gave it gas and it seemed fine for the rest of the trip. This has happened but once.
My initial thought was spark plugs, tune up. Someone also suggested the PCV.
Finally, it what seemed like an unrelated issue to me, two times in the life of the vehicle thus far has the instrument panel gone dead while driving. That said, I was pointed to GM PIC4677D. However, that bulletin seems to be related to OnStar Vehicles which my vehicle is not equipped with.
Any thoughts?
EDIT 1: Oh, quick note regarding any warning lamps. No lamps seem to act outside of expected during all of this. The SES light has never come on either in the 67500 miles thus far. In the two cases where the Instrument panel died, I pulled over as soon as possible. Shut the car down and restarted. Everything was fine. The two isolated incidents were roughly two years apart (happening in year 2 and 4 of ownership).
Occasionally when attempting to start the vehicle it will either:
* Roll over and start, but hesitate and die the second after it starts
* Fail to roll over (less common)
* Roll over and start, fight a low idle and recover with the RPM jumping over 1.5 (this is without me ever touching the gas)
This tends to happen intermittently, in other words, not every start. The cranking sounds and feels strong... and no different from any other start. In fact, there are good number of times where it starts up fine. However, when it does show one of the two symptoms above, it is rather persistent unless you:
* In the case where it rolls over, give the car a little gas by stepping on the accelerator.
* Do a choke start (described in the manual as fas petal to the floor when starting the car)
* Wait 30sec or so and try again
Once the car is running, it's seems fine in all regards and has never stalled. Just recently another symptom arose. The car began to hesitate waiting idle at a red light only a minute after having started it. Hesitation was good enough to cause the car to rock. Light turned green, I gave it gas and it seemed fine for the rest of the trip. This has happened but once.
My initial thought was spark plugs, tune up. Someone also suggested the PCV.
Finally, it what seemed like an unrelated issue to me, two times in the life of the vehicle thus far has the instrument panel gone dead while driving. That said, I was pointed to GM PIC4677D. However, that bulletin seems to be related to OnStar Vehicles which my vehicle is not equipped with.
Any thoughts?
EDIT 1: Oh, quick note regarding any warning lamps. No lamps seem to act outside of expected during all of this. The SES light has never come on either in the 67500 miles thus far. In the two cases where the Instrument panel died, I pulled over as soon as possible. Shut the car down and restarted. Everything was fine. The two isolated incidents were roughly two years apart (happening in year 2 and 4 of ownership).