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Help required urgently - major timing issue

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Hello all,

First things first, I have a 2004 cayenne S, RHD, with 72,000 miles on the clock.

I bought the jeep two years ago and it had some engine niggles from get go - full dealer history. Returned the vehicle to vendor (not OPC) and he got Porsche to replace two coils, didn't make a lot of difference. Sine then I replaced all eight coils and plugs at 62,000 and both MAFs at 70,000.

Here's the unusual part I converted it to LPG at 65,000 by top guy, put in a flash lube kit as well. I don't think this has that much to do with problem.

Ok, ok the problem is this the jeep has developed a ticking noise as well as a knock. The knock is bad and I don't want to drive the vehicle to OPC the y will crucify me and previous dealings they are not great and deadly expensive £135 or $200 per hour.

Codes using durametric as follows today

P0021, 0351, 0353, 0357, 0352, 0356, 0355, 0354, 0358 and p2189

I have done the research and first got the engine compression tested for piston slap or scored linings. Compression fine all very similar I can not rule this out though.

Now I believe it could be timing or more percisely cam senors and or knock sensors, as i said the jeep always ran poorly ar low speed and was a bit hesident, but when you put the foot down it was ok. The knock is there a start and increases with throttle and it slows on hills. I have stopped it on gas and added a octane boost to unleaded (hard to get super near me so I use 95 Ron) still very bad knock

I feel I need to replace the knock and cam sensors, but I would really like some of the expert advice I have read.

Paul Murphy

N Ireland

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  • Admin

P0351 to P0358 are all Bar Ignition Module (aka coil pack) faults on each cylinder.

Could be a main wiring issue or it could be your flash.

P0018 and P2189 are bank 2 camshaft errors and O2 sensing adaption - idle range respectively.

I would work on misfire/coil pack faults first.

This will likely be tough to troubleshoot due to the LPG conversion and flash.

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I have recently replaced MAFs and when disconnecting the battery I found the carpet foam was soaking in the fron passenger foot well. Tracked problem to front panel drainers blocked and cleared by locating same behind the wheel liners about two or three litres can out. Could this large quantity of water soo close to the battery be the route of all evil.


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