2003 C4S Cranks won't run

[Waderaces427]

New to the porsche world and have had nothing but issues with my recently purchased 95k mile C4S. I have read hundreds of threads searching for possibilities. After replacing the broken oil filler tube, I go to start the car and battery is dead. Battery is interstate 2 yrs old and passes load and cranking tests. Charge battery (12.65) and attempt to start the car and it cranks only fires for a second then dies. Checked fuel pump relay and pump is operating. If I give the car gas before it dies it will rev then die. The car has always started before yesterday albeit with codes p0022 and p0349. Also, cleaned MAF and reset TPS prior to yest. And checked charging system.

I have replaced coil packs and plugs. I have the new cam sensor but need to get the car on a lift to change. Checking FP at rail tomorrow. This car is very frustrating. So recap:

Car cranks fires then dies But I can get it to run by pressing gas then dies

Fuel level warning on dash but I had a 1/4 tank before no run issue

No codes currently

Car has died at idle coming to a stop, hesitation @2500-2800rpm , intermittent falls flat not a stumble at 4500rpm, battery discharges in a few days with alarm armed

Thank you in advanced for any help.

[Ahsai]

Welcome to Renntech!

 

Sounds like your car has multiple issues. I looked up P0022, which says the relative position of bank 2 camshaft vs crankshaft is out of spec and P0349 is also related to the bank 2 cam. My suggestion is fill the gas tank with a couple of gallons of gas and retry first (since it's easy). Then use Durametric to check cam deviations. Also may need oscilloscope to check the bank 2 cam signal.

 

The battery drain is another issue that can be trouble shoot by measuring the current drain when the car is at rest by a dc current clamp.

 

You will also need a multimeter for basic electrical trouble shooting.

[Waderaces427]

Thank you for the reply. Had a leak at the plenum in the back so idle back to normal. Cam sensor replacement next.

[Ahsai]

In this case it's not clear if the cam sensor itself is the problem (based on the codes) hence my suggestion of using Durametric. But I guess it doesn't hurt to try a new cam sensor too.