2003 G35 Coupe - Auto - all stock

GF calls me on the way to work saying her coupe just died, and all the lights on the dash came on. She pulled the key out and put it back in and it started up normally.

She called me again saying the car is hard to start or won't start at all. She is nervous about driving it home now.

Anyone got any ideas on where to start looking?

 

Does it sputter like it's struggling then die? Or does it just cut off? Does the car struggle to start up?

 

if she has to gas it it to keep the engine on during startup its a dirty Throttlebody.

 

She said this morning that it just died.

This afternoon it is struggling to start.

Been doing some searching and see alot of ECU reseting.

 

I thought of this, but she would have told if she was having to put her foot on the gas.

I am going to plug in my ODBII software and check for codes.

 

i have this dirty throttlebody issue too... you think i can just clean it off without pulling any of the throttle plugs off except for the battery terminals?

 

If you did that, you would only get the front clean and not the back. Take the extra few minutes to pull it off and clean it right.

 

Plugged my ODBII to it and got P0345 - Camshaft position sensor "A" circuit intermitently - looks to be the camshaft sensor.

Which sensor is it, I know there is 2 on the car?

 

JUST get a new throttle body, instead of cleaning it.

 

The problem is in a generator.

 

i had issues with random times where my car won't start either.... all lights cut on but not enough to start car.... took it to advance auto tested battery and battery was strong enough to keep all lights on but not enough to crank car.... i hope this helps you

 

i had the same problem with my 2004 G Coupe, there were lights on the dash but there was nothing when I turned the key... battery cable was broken

 

Has she disconnected the battery at all before this happened ?

 

Yeah, I second this. IF that's the issue.

 

spoolin - when you cleaned your throttle body did you have to do all those relearning procedures for the coupe?

Also does this apply to replacing the throttle body? In infinitihelp, the first two procedures with turn on and off via ignition was easy. The only gripe I have is the idle air relearn procedure.

Any help is appreciated as I will most likely be replacing.

Thanks everyone for the help.