Hey guys

So i have this problem with my 2000 audi a4 quattro, and i cannot figure out what it is!

When i got to start my car up sometimes it just wont start, it will just keep cranking and cranking. I have had my battery tested and it is not that, and i know its not my starter, what else could it be??
id say about1 out of every 5 times i start my car it does this

and the really strange thing is i always try and get a jump from another car when this happins and then my car will alwasy start!(it may take a few tries but it willfire up)imm not sure if this is just lucky coincidence or something to do with it??

it sucks because i cant figure anything out, and i really dont wanna take it to the dealer if i dont have to, funds are low as i spend all my money on my car!
so i am asking for all your help if anyone knows of anything they can suggest that would be soo helpfull!!

thanks alot guys
Steve

 

first things first. does this happen on only cold starts?

or does it happen on cold starts and warm starts?

 

Hey

well it usually happins on warm starts, i leave my car over night and i will go to work in the morning and my car will always start...but then i leave it at work for 10 hours and it sometimes wont start so i guess both....
i think its kinda like it starts 5 or 6 times then that one time it wont start on me

thanks

 

Coolant temp sensor all day long. Change that POS.

 

(typea4): Maybe investigate the crank sensor, I was once stranded with the same syptom, engine turns, however no fire. If the engine is turning it is not the battery, or starter. As it turned out the crank sensor was faulty, so the ECM says no fire, based on the position of the crank. Could be the problem?

 

i had a similar problem with my saab and it turned out to be the check valve in the fuel system. when i let the car sit, the fuel would drain back into the tank. then when i went to start it, id have to wait for the fuel pump to pressurize the lines which took about 20 seconds of cranking.

 

Can you say vagcom? Check for codes and post them here.

 

thanks guys for all the info!
any other ideas please let me know

thanks

 

IDK he is a Auditech.