Hi guys!

My 997.1tt fails to start engine from first attempt after I leave it with engine switched off for a short period of time(for 5 minutes or so), for example when getting in and back from convenience shop. On second attempt it starts normally. Any ideas what may be the issue here?

 

any warning signs on dash? Stick or tip?

 

Manual, no warning sign or anything. On second attempt literally in a few seconds it starts smoothly.

 

Could be a bad clutch pedal switch.

 

bad clutch pedal switch typically would show up on dash with warning to depress clutch pedal...im dealing with that now and fixing it today.


Ive had what OP is experiencing only a few times in 6 years. Im guessing it could be the immobilizer or steering lock playing into things.

 

+1 on the bad clutch pedal switch. My new one will be here tomorrow. I am having the same issue. Sometimes takes 2 tries to get started. This is what I ordered:

http://www.pelicanparts.com/catalog/...pg3.htm#item16

$37.25

 

I would also like to know cause. I have this sometimes and always thought it must be a weak battery. But that's not the case. To counter this, insert key into ignition, turn on headlamps, wait 5 secs and start the car. Never fails.

 

Can you elaborate further. Does it crank and not start? Or does it not crank at all?

 

Mine does the same thing. It will start to crank and then just stop. Try again and no problem. My guess is it's related to the engine ground. Apparently there's a cable from the top of the engine to chassis ground that frequently gets corroded. Unfortunately, replacing requires dropping the engine.

 

Same as previous poster: It will start to crank and then just stop. Try again and no problem.

 

I have a similar problem, always starts on 2nd attempt first thing in the morning, but once its been started it will always start until the next morning? changed the starter motor & battery and its the same? No Error messages on speedo either, its a bit embarrassing to be honest.

 

Do you have any diagrams showing where this ground strap is? i need to fix this asap.

 

No pictures but given that another poster said he replaced the starter and battery and the problem still occurs it sounds like a ground issue or something in the computer that shuts off cranking due to excessive current. My guess is the engine is hard to crank for some reason, the computer stops the cranking but the initial crank relieves some pressure and then it starts.
In the case that it's a ground issue this can be a bad thing. I read a thread on the ground a few days ago but tried looking for the thread on this using Google today and can't find it. But in the thread it mentioned the ground lug is on the top of the engine and the only way to access it is with an engine drop. Hopefully this is not the case.

 

Hmm, seems like a common issue for the car, I wonder why I was the first to raise it.
Luckily my car is on balance of Porsche extended warranty, so I'm going to book it in(when they come back from summer vacation ) and see what they say.

 

Keep us posted