I have a 2003 G35 sedan, I have had it for 2 1/2 years now and about a month ago it started turning off. It use to only turn off after it had been running and the engine was at the regular temperature. But lately it has been trying to turn of when I'm trying to warm up the car. Any ideas why this is happening? I have checked the engine oil and it is normal. Could it be the transmission oil? Please help!!!

 

highly unlikely, but maybe water in the gas??? you can use Heet to get some of the water out

How long has the problem been occurring??

Does it only want to die when idle?? Possible vacuum leak?

 

two other threads all based on sedans shutting off. problem was thorttle body.

 

TPS (throttle position sensor) or MAS (mass air flow sensor) maybe? Try spraying some MAS cleaner (buy at auto parts store....dries faster than carburator cleaner) and see if it helps......couldn't hurt for an inexpensive attempt.

Good luck.

 

MAF sensor is bad.


starts perfectly fine if your car hasnt been running for a while right?