Z stuttering on warm start
 

Had multiple instances where the Z stuttered on startup today. It starts and then nearly dies before returning to a normal idle. I think the engine was warm in all instances. No error lights or other signs of trouble. First thought was dirty air filter. They were dirty, and I cleaned them up a little. Seemed to help at first but then the issue came back. Car runs ok after a minute.

The car is a 2009 and is stock. 11500 miles. Oil, coolant, gas and temp levels normal. Garage has been dusty the past few days which is why I lean toward air filter. Anyone have other ideas?


Thanks,
Matt

Dirty throttle bodies possibly, since there's no CEL.

warranty
 

If it were my Z

it would be at the dealer getting diagnosed right now

Cleaned the filters again. So far no issues. If it returns I will get it to the dealer.

I'd run it by the dealer. Might as well use the warranty.

The stuttering idle has also been linked to the cam angle position sensor in other threads. Some people have had the sensors melt and needed replacement.

this exact same things happened to me before, And good luck getting the dealership to diagnose that lol. If it doesnt do it often, or they arnt able to mimic the problem.. theyre going to tell you to bring it back when the problem occurs again. First thing you do when diagnosing a car is verify problem/customer complaint.