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YOUR RESEARCHHow to replace a Camshaft Position Sensor in a Porsche Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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sometimes harder
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Unfortunately, an intermittent issue is sometimes harder to find.
How to replace a Camshaft Position Sensor in a Porsche Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'sometimes harder' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'sometimes harder' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check connectors first' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Check the connectors first, then look at the wiring.
How to replace a Camshaft Position Sensor in a Porsche Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Disconnect bottom flex hose
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Suggestion
He recommends disconnecting the bottom flex hose from the underside of the car.
How to replace a Camshaft Position Sensor in a Porsche Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace air oil separator
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Suggestion
Here's a video from a few years ago showing removing/replacing the AOS on a 2000 Boxster with manual transmission, mostly from below.
How to replace a Camshaft Position Sensor in a Porsche Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace camshaft position sensors
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Suggestion
I went back thorough the forum looking for a procedure on how to remove and replace the camshaft position sensors.
How to replace a Camshaft Position Sensor in a Porsche Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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There are two, one per bank, and are located at the non-driven end of each intake camshaft, i.e. at the right front of the engine for the 1-3 bank, and the left rear of the engine for the 4-6 bank. Held in place by a single 5mm allen.
I've never done it, but my Bentley manual appears to have a pretty good set of instructions. I suggest you get one if you're going to be doing much of anything on the car yourself. Good luck
I went back thorough the forum looking for a procedure on how to remove and replace the camshaft position sensors. How did you go about doing this, I.e. a procedure?
Steve, note his post in the comment section of that article a few days ago (Oct 11).
Here's a picture from when I was swapping out the sensor behind the driver's seat in a '99. I just had the panel behind the seats removed and reached in with a small wrench. Nothing else had to be removed.
http://986forum.com/forums/506745-post25.html
The one under the AOS... will probably need the AOS removed.
Try out some Googling with variations of "Renntech", "Camshaft position sensor", and maybe your code "P0341" etc... Not only for info on how to remove the sensors, but more insight into what the root problem may be.
https://www.google.com/search?q=renntech+cam+position+sensor+AOS&ie=utf-8&oe=utf-8
I got a CEL, scanned the OBD, and I get this:
P0349 Camshaft Position Sensor "A" Circuit Intermittent (Bank 2)
A few questions:
1) Does Bank 2 mean for cylinders 4 - 6?
2) If so, what's involved in removing and replacing it? Do you need to remove the top engine cover or is it accessed from behind the seats, or some other way? (Seems that it's a totally different procedure depending on whether its the Bank 1 or Bank 2 sensor)
3) Does replacing it solve the problem, or could something else be causing it to act this way?
4) Finally, is there
any possible way
this could be an early warning of an impending IMSB failure? (I know there aren't any clear warning signs, but I believe there are a couple of tiny ones)
As you can see below, I have a 2004 S.
Thank you.
I wouldn't buy a sensor yet. It could be a wiring issue. Unfortunately, an intermittent issue is sometimes harder to find. Check the connectors first, then look at the wiring.
Reviving an older thread.
Has anyone replaced the Bank 1 camshaft position sensor in a 2.5L engine (see
this diagram
for bank 1 vs. bank 2). I have the Bentley manual and Wayne's book, but I am finding it very hard to reach the bolt that holds the sensor down. (Wayne's book has the engine removed which makes access a cinch and Bentley simply instructs to unclip the connector and undo the bolt).
I am thinking about removing the secondary air pump to improve the access from the top but before I do I want to see whether someone has better instructions.
Think it's the same on all of the engines...and it's a pain. Have to take the AOS out. Removing the pump may not help much. Remember, it is a hex head, not a torx head and can be in there pretty good. Dont strip it or you will be in for a lot of fun
Thanks. Ouch, removing the AOS is not what I am hoping to have to do. I take it all the work is done from the top of the engine, not the bottom?
EDIT: I looked at Wayne's book and it describes the AOS removal. He recommends disconnecting the bottom flex hose from the underside of the car.
