Porsche 928 Crank Position Sensor (CPS) replacement

[@Bubblun1]

Your vise grips idea is golden! I'm in the middle of an intake refresh job on my 88 S4 and knew this would be one of the toughest parts. I soaked as much of the area in advance with PB Blaster while doing other tasks. I figured a good sign already was I was getting some rotation after removing the allen bolt. I chose a thinner set of vice grips than you and shockingly it came out whole by lifting upward with little effort! Off to buy a lottery ticket I think!

[@am9275]

Thanks for the video, believe it or not I am learning more and more about my 928 just watching your videos.

[@mrjones100]

You bet. The best part of all this is it gives me an insight into what the Porsche team was thinking as they did this 'clean-sheet' car. And I like the oddity of the 928; apparently only about 61,000 were made. Compare that to over 1,000,000 and counting of the 911.

[@terrylessmann2274]

The CPS on my 87 S4 was petrified in the hole. Ended up drilling it out but then the end cap fell into the bell housing. Had to pull the plate off the bottom of the BH, crank the flywheel with a ratchet, and then the end fell out. A dremel works nice to smooth the barrel out so the new CPS slides in easily.

[@mrjones100]

That would suck, but nice solution...these cars certainly demand some patience, but all I have to do is get it out and drive it and it is all worth it. Blasting around Maryland today getting my fix. Looking at some front end, exhaust, or power steering work next. Thanks for sharing.

[@BillKraft]

How convenient. I'm having a problem with mine now and wasn't sure where to find it. Thank you!

[@mrjones100]

Prepare for a fight...it was really tough to lift out. Wiggling back and forth seemed to have little effect on the upward ease of movement. Seems like breaking them is pretty typical from the boards.

[@BillKraft]

@@mrjones100 OMG. I got it halfway out by only removing the airbox. I can't get any more leverage on it. It will most likely break in half as it did for you. I must capitulate and accept that I need to remove the intake manifold.

[@mrjones100]

@@BillKraft You could dig around on rennlist and see if anyone has a hack to pull it from where you are, but the amount of force I needed to get mine out really surprised me. Best of luck.

[@Damngoodshot]

Great work, good education.

[@garythompson-sd1um]

Do not hammer the new sensor in!!! File the inside of the bore to get rid of the corrosion and do not put it in DRY! You need to put some grease on it and it should slide right in after cleaning the bore. Do not grease the sensor end, only the sensor side.

[@gazfish]

Great vid, is the replacement a genuine new bosche part as they should have a white band where your old one was orange.

[@mrjones100]

It is a pelicanparts.com 79208-INT from FAE. The Bosch was double the price, Porsche 7x the price. It was a WYAIT replacement since the access is tough. Since it is nonmechanical I opted away from the pricier options.

[@williammclaughlin2606]

what is the cable behind it with the tan wire?

[@mrjones100]

If I recall correctly, it is a test port of some ilk that dealers used long ago, but I don't know for what William.

[@williammclaughlin2606]

@@mrjones100 mine is cut for sone reason but I will fiqure it out haha. Thanks man