Camshaft position sensor help

[flouese]

Before you tell me to search the forum for the answer, I did, I am a black and white procedural oriented individual (former submarine Sailor). I have the 101 Projects and a Bentleys, I've searched Youtube and can not find how and where to access the Camshaft position sensor to either check voltage or replace the units. Last week I had a flashing CEL with the P0341 code along with 9 others. The weather is nice and I want to drive my 99 Box base.

Would someone please point me in the right direction?

How and where do I access them?

[san rensho]

You need to post all the codes with their descriptions. That many codes is a complicated problem. You need to be able to look at all the codes together to make a correct diagnosis.

[78F350]

Here's some interesting info:
https://rennlist.com/forums/boxster-and-boxster-s-986-forum/869939-p0341-and-p01397-1999-and-older.html
(function of sensor in 1997-1999 Box's)

I just went outside to cover a (very dirty) 2.5L engine before the rain starts. Here's some pics I took:




Hope that you do not need to touch the bank one sensor...

[flouese]

Thanks, this is helpful.

Originally Posted by 78F350

Here's some interesting info:
https://rennlist.com/forums/boxster-and-boxster-s-986-forum/869939-p0341-and-p01397-1999-and-older.html
(function of sensor in 1997-1999 Box's)

I just went outside to cover a (very dirty) 2.5L engine before the rain starts. Here's some pics I took:




Hope that you do not need to touch the bank one sensor...

[flouese]

These are the codes that I had:

P0300-P0306
P0341
P1313-P1318

Originally Posted by san rensho

You need to post all the codes with their descriptions. That many codes is a complicated problem. You need to be able to look at all the codes together to make a correct diagnosis.

[flouese]

I'm sure by now everyone is tired on this thread, however, I have another question.

Do I need to remove the AOS and intake manifold behind the drivers seat to access both camshaft position sensors?
I spent the better part of the afternoon searching for them and was only able to put eyes on the one behind the drivers seat. With that said, I could not see any way to access it w/o removing the manifold.

All I want to do is get the car back on the road. Neither the Bentleys or 101 Projects provide adequate details on how to access them.

[marck]

Originally Posted by flouese

These are the codes that I had:

P0300-P0306
P0341
P1313-P1318

Just guessing but you have misfire on all cylinders and an cam issue. So do you have a Durametric and can you check cam deviation. I guess replacing cam sensors is a good firs step. I'm just learning Porsche so please ignore me but I guess this sounds like it could be serious.

[flouese]

Nobody here can answer my question? Do I need to remove the intake and AOS to test/remove/replace the camshaft position sensors?

[JFP in PA]

Originally Posted by flouese

Nobody here can answer my question? Do I need to remove the intake and AOS to test/remove/replace the camshaft position sensors?

No...................

[Gelbster]

If it really is the "Cam Sensor"(unlikely) it is more likely a wiring fault to the Cam sensor.
So you need to check for signal at the sensor connector, not just replace the sensor. Access is awful .

[rczap]

Did you see my post on this?
http://986forum.com/forums/performance-technical-chat/63180-cam-position-sensor-replacement.html

I replaced both cam sensors. I did not have all 3 codes like you do but after I replaced the passenger side sensor I got a code for the drivers side sensor. I replaced that and the code would not go away. So I took it to a indy shop and they found the passenger side cam positioning solenoid was bad. They replaced it and I have been code free for over a year.


Edit: I did not have to remove anything except move the AOS out of the way for either sensor.

[flouese]

If I can figure how to disconnect the lines to them and check their voltage, I will try that first. Again, I still cannot figure how to get in there to disconnect them. Looks like another evening trying to figure this out. Thanks for the assist.

Originally Posted by rczap

Did you see my post on this?
http://986forum.com/forums/performance-technical-chat/63180-cam-position-sensor-replacement.html

I replaced both cam sensors. I did not have all 3 codes like you do but after I replaced the passenger side sensor I got a code for the drivers side sensor. I replaced that and the code would not go away. So I took it to a indy shop and they found the passenger side cam positioning solenoid was bad. They replaced it and I have been code free for over a year.


Edit: I did not have to remove anything except move the AOS out of the way for either sensor.

[flouese]

WOW, this was helpful in getting my car out of my garage... All I want to do is get this one back on the road and start the rebuild on my 66 912...

Originally Posted by JFP in PA

No...................

[flouese]

Thanks. If I can figure how to get my meat hooks on them, I will start here.

Originally Posted by Gelbster

If it really is the "Cam Sensor"(unlikely) it is more likely a wiring fault to the Cam sensor.
So you need to check for signal at the sensor connector, not just replace the sensor. Access is awful .

[Jamesp]

I've replaced 2 of them on my 2003. Swapped them and sure enough, the code followed the sensor around.

[Rickvd]

I measured cam position 1 and 2 deviations with the Durametric, Cam 1 was steady at 3.22 cam 2 was reading -0.45 and steady. The car is a 2004 Boxster s, there are no engine alarm codes or cel, the car seems to be operating properly. My understanding is these two readings should be close(ER) together. I uninstalled the software re downloaded and reinstalled the software. When checked After this the observed values were the same. If it was a failed sensor I would have assumed there would be error codes or noticeable performance degrade. What have others observed? Thanks Rick

[JFP in PA]

Originally Posted by Rickvd

I measured cam position 1 and 2 deviations with the Durametric, Cam 1 was steady at 3.22 cam 2 was reading -0.45 and steady. The car is a 2004 Boxster s, there are no engine alarm codes or cel, the car seems to be operating properly. My understanding is these two readings should be close(ER) together. I uninstalled the software re downloaded and reinstalled the software. When checked After this the observed values were the same. If it was a failed sensor I would have assumed there would be error codes or noticeable performance degrade. What have others observed? Thanks Rick

The deviation spec for the car is +/- 6 degrees.