I got a 04 g35 6mt. Every morning when I start my engine I have no problems on a cold engine. When I start it on after warming it up, it would stall out. I'd have to rev it a bit to keep it from stalling. I could drive it after revving it, no problem at stop lights. It drives fine, no stalling. Just really low idling till about the first line. I just need help on why it stalls on a warm engine when starting it up and why does it idle so low. lmk guys! This is driving me nuts.

 

Check oil and coolant levels when the motor is cold.
Clean the MAF
Check the fuel lines/pump

 

No check engine light?

 

Oil is good. Coolant levels are good too. I'm guessing it's the maf or the tb cause before all this, I was cleaning my k&n drop in filter with the recharge kit. Is there any diy on cleaning the maf? I've did my research but nothing. I don't wanna screw things up.

 

Nope

 

Buy this and spray the plate and connectors. I promise it's your MAF.

 

Thanks! But do I take the maf out or could I just leave it in? Also how long do I have to wait till I can start the car back up after spraying?

 

On mine you need a tamper proof torx to take out the actual sensor. You can pick up a whole kit of bits at Harbor Freight for like 10 bucks.

You can try taking out just the plastic housing the MAF sits in and spray it carefully, but I'd rather just get the set of bits.

Spray the sensor, let it air dry, and then put it back in.

 

What's the general state of tune of the car? When was the last time you did such things like change the air filter, clean the MAF, or change the spark plugs?

 

I just sprayed it while it was still in the plastic housing (with it taken off the car obviously). Stuff dries really quick like brake cleaner, but I waited 10 mins before I reinstalled. Fixed all my idle issues including hunting, low idle, stalling, etc. While yer at it, you should clean the TB and replace your PCV valve and you'll cover all your metered air bases. Car will run like a champ.

 

Thanks guys for the replies. I just got a bottle and gonna do it in a bit. Let's see how it goes. Wish me luck.