Car starts fine when cold. Car runs fine. When I turn engine off when hot it wont restart. I have to wait about 20 minutes until it cools. Car cranks but wont start.
Replaced all of the following:
Mass air flow sensor,
Throttle body,
Air filter,
Coolant temp sensor,
Fuel pump,
Crank position sensor,

Any ideas, this issue is driving me crazy. Thanks in advance.

 

Is your check engine light on?

 

Starter solenoid?

 

Make an appointment for an oil change at your Infiniti dealer
When you arrive and they have multiple lanes for service pull in and block both lanes when you turn off your vehicle
I'm sure they'll find the problem very quick

 

Or just show up with a shotgun and demand they figure it out or else....

 

No check engine light but "SLIP" light is on.
I took the car to infinity dealership and paid $140 for them to diagnose that it was the fuel pump. They wanted $1350 to do the work so I changed it myself but it did not fix the problem.

 

Can you please give justification as to why you think starter solenoid?
The car is turning over fine it just wont start when hot. I was thinking a fuel/air mixture issue.
Thanks

 

Take it back to the dealer, show them their paper work and the receipts for the fuel pump. If the pump was non OEM that could still be the problem?
They should not charge you another diagnostic fee.
BTW Infiniti is spelled with an i
Infinity are speakers

 

If he did it himself, they might not take it as a valid repair. But, Telcoman has a point. If I were you I would take it to a dealership/garage for an oil change, and leave it in the service drive thru for THEM to take. Then when they ask you why your vehicle isn't starting, time to play dumb and let them fix your issue as you get angry at them for causing it in the first place.

 

Perhaps a reading of the FSM may help you?

https://www.nicoclub.com/FSM/G35/Sed...5_Sedan/ec.pdf

Start reading on EC-23

 

Does it crank when it's hot or click?

I'd look for something affected by heat such as a sensor, engine temperature sensor, leaky fuel injector, starter solenoid as someone mentioned, and things like that.

 

Cam sensors.

 

Yep. Stealerships are the dumbest ****s on the planet. As if they haven't seen THOUSANDS with the same problem.

 

I replaced the cam shaft sensors to remove CEL. That was about when the hot start condition started. Thing is I dont have CEL anymore. Do you think i should change sensors again, maybe to OEM to fix starting issue?

 

I bought Hitachi cam and crank sensors from rockauto for $40 each. Hitachi is the OEM brand. Our cars do not play well with aftermarket sensors.