Car stalling

Danwitha370z

A weird thing started happening to my car last week.
So ive noticed when ever the car is parked on my driveway (on an incline),
and the car has been driven and parked for about 10-30 min or so... and then go back to drive it again,it would just start and then die right away.
It does not do this on a cold start or in my garage on flat ground?

The only way i can start it again is if i give it some gas and then it starts up and runs just fine.
It is really weird thing.. i cant come to the conclusion that because the car is on a angle that it wont start...but that seems the be the only difference when parked on the drive way over being in the garage.

I have mods and am tuned...the car runs great otherwise.
I do have a exhaust leak i need to fix so maybe that is a part of the issue?
Also it started happening right after i had a hard scrape when driving the car on a bumpy road and the car took a good jolt..maybe a sensor got misaligned?
The car has NO CEL and runs fine... i am just puzzled because i dont even know where to start diagnosing..

Any help would be fantastic.

busterbull

The exact same thing is happening to me and it's only when it's parked on an incline and only when I try to restart it. Starts fine when she's parked on flat ground. I have no mods, all stock, all up to date and no CEL either.

Has anyone else had this happen to them?

Raidernation

Maybe a bad fuel pump?

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SouthArk370Z

Your fuel pump assembly may have come apart. Try searching for "fuel pump tophat"

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Desert Rat

move to the on position and wait a few seconds, then start. Let the fuel pump catch up. Fuel is probably draining back to the tank and it takes a second to pressurize the lines.

MotorvateDIY

A dirty throttle body can cause the car to start and then die.
If it has been a while since they were cleaned, you might want to try it:
(Also, a clean throttle body greatly improves throttle response!)



After cleaning them, do this or you might have a high idle:


Good luck!

Danwitha370z

MotorvateDIY: I actually have been following your series on youtube for sometime now and even commented on Facebook on how great your videos are! Keep it up!

However i did clean my throttle bodies and after my tune, my idle still bounces from 750rpm down to 500 and back up again.
Do you know what could be a cause of this?
I have many friends with 350z and 370z who experience the same problem.
Any input would be great!

Wabbyy

My guess would be dirty throttle bodies or MAF's

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busterbull

Thank you for all of the replies, I changed out the air filters and it hasn't happened again.