So i replaced my battery and now when i start my car in the cold it is fine, but i drive somewhere and shut the car off, when i go to turn it back on my car just idles for about 3 secs and shuts off...why? Any help?

 

is it the starter?

 

nope..

 

try cleaning the throttle body and maf sensor

 

ill give it a try and get back to you guys

 

sounds like a MAF... will you car start and stay on a cold start?

 

check your alternator, see if its still working.
- turn your car on and take off the negitive cable on your battery, if its still running then your alternator is fine.
- or use a voltage reader, battery should be around 12.3-12.8 and when car is running it should read 13.9-14.1

clean your MAF and make sure its plugged.

check all your vacuum lines as one can be leaking.

another suggestion is your fuel filter.

also Have you checked the oxygen sensor? Once your car heats up it could create issues if it's faulty. Or maybe the EGR valve?

^^ cosign with person up there. check you

loose connection will cause it to shut off.

 

99% likely your maf.. happened to me, took me like a year to diagnose it.

 

Yep. Maf. Just be careful when your cleaning it because if its just dirty you don't want to be shelling out un-nes. cash for a new one.

 

Thanks guys...ill def get some cleaner today and see if that works.

 

mine use to shut off like that and i replaced my throttle body and it hasnt done it since.

 

i just got my TB and CAI polished, installed them, car fires up but when it comes back close to idle around 1k rpm it dies. Did ecu reset, pedal reset, throttle positioning reset, and idle volume reset, still nothing, going to try and clean TB valve and MAF tomorrow, how do i clean the MAF???

 

check for any leaking holes.

does the car loses power once you turn it on?

if soo its probably one of the hose leaking.

 

I have this exact problem. In the last week I put a full stereo system in my 04 G35 coupe and my wifes 04 350z. After finishing both cars I run into the same problem on both. When cold they crank and run fine but once they have warmed up if I shut them down for a few minutes they will not stay running unless I give them a little gas. Just cranks and dies. Since I have this same problem on both cars after disconnecting the battery It seems like something just needs to be reset or it just has to relearn on its own.

Has anyone got any ideas? I saw a few reset procedures but none of them sounded like the issue im having.

 

most likely ur alternator