Hi guys, just a quick bit of help needed please. I need to replace my Crank Position Sensor on my Mk1 vRS 1.8T today due to an intermittent hot starting issue and a kind bit of vag.commery by another member.

After searching Brisky and many other forums, I still don't know for sure where it is! Best I can come up with is 'left hand corner of head by the intake manifold'. Is that correct? Anyone have a picture to guide me? Lol.  I know they're a pig to get to but that's about it! 

Thanks in advance.

Si

Behind the oil filter to the right. Be warned it might be a b1tch to remove

Thanks very much Mr Barge, I was told they're ok to do if the engine isn't in the car. :wonder:  I usually keep mine in the car, so yes I am expecting difficulties!

Cheers

Is your thermostat Ok ?

With a hot starting problem I'd be checking the coolant temp sensor before anything else.

Crank or cam?  The position you mentioned is the camshaft sensor.  Mine was going dicky and the car struggled to start when hot.  Eventually just died altogether leaving me stranded luckily only a few hundred metres from home!  New camshaft sensor and alls been well.

Edited 6 March, 201412 yr by Liverpool-Lad

Thanks for all your input gentlemen. The fault is one that I've seen mentioned on here before as a crank sensor issue and has come up on vag.com as CPS which the operator tells me can mean either crank or cam but in this case apparently crank and other people with the same symptoms come up as crank.

Basically, starts instantly cold and runs perfectly all the time. Occasionally, when being restarted after a run and having cooled down a little, turns over for 10-15 seconds then starts with the EPC light on, ticks over at 1200 rpm and has weird throttle response. If you then turn off the ignition, she'll restart immediately and run perfectly from then onwards, no warning lights, nothing. Apparently a standard crank sensor issue.

Wednesday I gave her a 'spirited drive' and she was perfect all the time, so very intermittent.

Yesterday I failed miserably to locate the crank sensor, removed some hoses, looked in that position, caught glimpses of sensors using mirror and torch but nothing identical to the new one.

Does anyone know of a how to guide or even a picture of where it's located please?

Luckily, she's a high days and holidays  :sun: car so I can just put the hoses back on and carry on as before!  

Stole this picture from micheal1 on another thread so hope he doesnt mind. The crank sensor is there on the picture located just to the side of the dipstick. The big-ish white plug is its connector.

You Sir, are a top man!  I recognise the plug from the new one, my wire is much longer than that one so I assumed it plugged in further away! I see the head is off in the pic and lots of stuff removed including the rail that's in the way. It looks like the sensor is mounted at right angles to the front of the block in that picture?

When i bought my crank sensor for my old octavia which was a 1.6 the crank sensor came with a wire twice as long aswell. Still have the sensor too. You can get to the bolt that holds the sensor in place from under the car but the plug is a pig to get at you will be better off removing the plate on the inlet manifold that houses the n249 valve... And the dreadered dipstick that will no doubt snap too lol

Hee hee, yes I was gonna remove that plate for sure, the N249 valve is a long distant memory. It failed and was summarily bypassed. the dipstick holder was replaced a few years ago too I think? TBH I'm always amazed how good most of the sensors etc have been. As most people who know me will attest, I do the bare minimum of maintenance, drive her hard and irregularly and yet at nearly 153,000 miles she's still super reliable.  Original clutch, turbo etc. :clap: