The Librarian

<center><img src="http://pictureposter.audiworld.com/61424/campositionsensor.jpg"></center><p>
For those that were afraid to ask. (Its behind the exhaust cam sprocket). The sprocket has to come off to get at the CPS. And the belt has to come off the sprocket (or be zap strapped to it), etc.

Definitely a good part to replace IF it hasn't failed and you are due for a second timing belt replacement.

To replace this expensive little begger, you need to find it at the least cost. Then you need to take as many things off the front of the engine as required to get at the cam belt cover and the tensioner. If you are clever, you can zap-strap the belt to the cam pulley and keep the tension on it slightly so you can a) slide the cam sprocket and the belt off the exhaust cam as one unit and b) avoid having to totally replace the cam belt (which is a good idea if its almost due anyway). Be aware that the cam sprocket has a cast "key" and if you brutalize it with something like an air rachet, you might just snap the key off the sprocket - then you are looking at a new sprocket and probably a belt replacment - unless you suddenly get clever again.

UrS4boy

By Jonathon in Ontario at my suggestion after he was able to replace the CPS without completely removing the timing belt (TB)<ul><li><a href="https://forums.audiworld.com/s4s6/msgs/107930.phtml">https://forums.audiworld.com/s4s6/msgs/107930.phtml</a</li></ul>