Hello,
I have a 99.5 1.8t, have been daily driving it since we purchased it a few weeks ago. I go to work at 5am every day and it has started every day without any issue. When I went to start it Wednesday morning after it only being parked over night, it would not start. Cranks but wont start.
Replaced the battery and the same battery starts my other car.
Capacitor is reading 12.2V
Have spark

I have read elsewhere it could be the crank sensor? is there any way to diagnose this before purchasing and crawling under the car for what it "might" be?

Im sure someones going to mention buying a vag come and a bentley, which i plan on buying both, but at this current time i simply can not afford either.

Thank you,
Stephen

 

When you turn the key to the ON position listen for the fuel pump to kick on.If you hear a hum like sound then your fuel pump is working, if you do not hear a sound check fuses and relays. Then repeat. If that does not work than your fuel pump is bad. Also another way of checking for fuel is at the fuel rail. Test your crank sensor crank sensor your going to need a mutimeter.

 

so it sounds like to test the crank sensor u need to remove it? at which point u might as well replace considering there only 20$?

 

No you do not have to completely remove it from engine to test crank sensor. If you watch the video you can see that the crank sensor has it a harness that connects to it, by using the mutimeter you could see if power is getting sent to crank sensor.. But if you just want to replace it go ahead, use this video as a guide. Good luck http://www.a4mods.com/index.php?page...eedsensor.html also another gudie

 

But i have doubt its the crank sensor.

 

alright so here is what ive done with nothing but the same results.
disconnected fuel rain and put in on position and fuel sprayed out
pulled all spark plugs and there sparking in a pattern
sprayed gum cutter into air box and made no difference
unplugged crank sensor and it made no difference, still sparked
there was blow back while i had the spark plugs out
checked all fuses

 

i guess, your only opinion is to change it. your crank sensor.

 

alright, so this morning i went out and cranked the hell out of it. eventually it did turn over. it is a few degrees warmer today then the past couple, so it definatelly seems temperature related.
another page was mentioning coolant temp sensor. i believe im going to change that, and replace the crank sensor soon for ease of mind