3.2 - 3 chain engine - P1325

[Smallblock454]

I have a 2003 (ROW) 3.2 with a 3 chain engine. So camshaft adjustment via oil pressure.

I had a IMS bearing change done by a workshop. Since than the engine shows vibrations in nearly every rpm range.

I've diagnosed it with Piwis and there is a static DME DTC P1325 error. P1325 = camshaft adjustment bank 2 (invalid signal).

I've cleared the code, but it came back after i drove above around approx. 4.000 rpm.

If the code is cleared, the engine seems t run a bit nicer if you only run it at low revs.

Additionally i checked for engine vibrations via Piwis. At low rpms they where at 10% and climbing up with rpms. To me that seems to be a pretty high value.

Camshaft position is on -0.8 and 1.6. So should be OK.

Unfortunately i don't have a detailed documentation on the face lift engines with the oil pressure controlled vane cell adjuster camshafts. But it seems that there are solenoids and connectors that can be checked. Does anybody have a detailed documentation on that?

Also some instructions on that P1325 DTC would be very helpful.

Thanks

[JFP in PA]

P1325 Camshaft Adjustment, Bank 2 – Signal Implausible

Possible fault cause:

- Dirt in system

- Solenoid hydraulic valve mechanically blocked

[Smallblock454]

Thanks JFP in PA.

That makes sense.

Also found a video on Youtube from Japan about this topic. In the video someone shows how he cleans these valves of his 3.6 996 engine.

https://youtu.be/wb8S9ng0vdY

Checked the PET. But in the 986 PET i couldn't find the valves. Than checked the 987.1 PET and it seems that the parts for the valves are part no 38 to 48.

Does anybody know which valve is responsible for which bank (1 and 2) of the engine?

[JZeke]

Originally Posted by Smallblock454

Thanks JFP in PA.

That makes sense.

Also found a video on Youtube from Japan about this topic. In the video someone shows how he cleans these valves of his 3.6 996 engine.

https://youtu.be/wb8S9ng0vdY

Checked the PET. But in the 986 PET i couldn't find the valves. Than checked the 987.1 PET and it seems that the parts for the valves are part no 38 to 48.

Does anybody know which valve is responsible for which bank (1 and 2) of the engine?

Did you ever get to the root of this? Ive had a static P1325 since I had the IMS Solution installed nearly 4 years ago. I've not done much to track it down until now as I prioritized a complete suspension refresh and update brake hardware. After watching some videos about the 986.2 configuration of Variocam, I am left unclear on how best to remove dirt from the system without tearing down the head.

I would take it to a shop, but the local shops stare blankly when I ask them about variocam on M96 engines and start suggesting throwing parts and diagnostic time at it, none of which square with what Jake Raby has suggested countless times.

[Smallblock454]

Hi JZeke,

sorry for the late response. I'm not very often here in this forum and the last time i've tried to access it, it was down.

My P1325 is intermittent. I couldn't track it down. I'm now on yearly oil and filter changes. The dtc came back twice in the last 4 years.

I'm not driving with the car much. So unfortunately i have no helpful hints for you.

Did you check the camshaft positions with Piwis?