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Discussion Starter #1
Hi all,

Having some issues with sluggish acceleration. The car is throwing up code P0341 cam sensor. Thinking about changing this to see if this is the cause. Anybody have any experience replacing this themselves, and the best way to do it?
Cheers
 

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Cam sensor is on the left hand side of the block and is held in by one bolt, unclip the plug unbolt and then put the new one pinch the bolt up and clip plug back on
 

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Discussion Starter #3
Just had a look, looks like the engine mount is in the way. Is it possible to do without removing this or does it have to come off?
 

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place a jack under the engine on a block of wood to spread the weight, remove engine mount bracket, will only add a few minutes to the job.
 

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Discussion Starter #5
Okay thanks alot, will give this a try. On second thoughts going through the forum, i think my timing may be off. Iv only just changed the timing chain tensioner and before that it was very rattly, thinking it might of skipped a tooth. Anybody know if its possible to check this yourself?
 

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Its unlikely to be that from changing the tensioner. Simple things first. The position sensor reads off the cam sprocket, so its likely to be that. Engine mount is 5 bolts. and quick to whip off.

To check timing you need to remove cam cover, and on the cam tooth check that the gold link on the chain is lined up with the timing marker, and then you have to check the two links are lined up on the crank sprocket, which involves left side of the engine off.
 

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Discussion Starter #7
Its unlikely to be that from changing the tensioner. Simple things first. The position sensor reads off the cam sprocket, so its likely to be that. Engine mount is 5 bolts. and quick to whip off.

To check timing you need to remove cam cover, and on the cam tooth check that the gold link on the chain is lined up with the timing marker, and then you have to check the two links are lined up on the crank sprocket, which involves left side of the engine off.
There was a fair bit of chain slap and rattle just before i did the tensioner, so was thinking it possible slipped a tooth.I will start with the simple things first tho. Hopefully will sort the problem
 

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Almost certain the timing will have jumped, happened to me last year.

Ended up being 3 teeth out on the crank sprocket.
 

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Discussion Starter #9
Almost certain the timing will have jumped, happened to me last year.

Ended up being 3 teeth out on the crank sprocket.
Thats what i was thinking, it does seem to run fine, its just the acceleration. How did you sort the problem in the end?
 

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I stripped off the oil pump/timing cover and timed the engine properly.

I personally didn't even try a sensor as the tensioner had just started rattling and I didn't swap it in time.

If yours wasn't rattling then it may just be a sensor. Yeah, runs fine idles fine just is really slow
 

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Discussion Starter #12
Looking at tutorials and stuff looks like im going to need a puller and belt tensioner tool which i dont have. The chain rattle was fairly bad before i got a chance to change the tensioner so thinking this is the cause. Will get it looked at when i go in for my MOT next month. Cheers for your help
 

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Sorry to piggyback off this thread but I didn't really want to start yet another Timing Chain Tensioner thread!
Basically my girlfriends R52 has started making the death rattle.... 2 weeks ago.... Of course it slipped her mind to tell me something was wrong until I got in the car and see the dash lit up like a Christmas tree and it sounding like a diesel.

I pulled the codes and got the following:


Basically a similar P0341 to above plus some rich running and misfiring - I've ordered a new tensioner and will get that fitted but I was wondering what would be involved in retiming and whether it's worth doing myself or if someone has a ballpark figure for what they'd charge to retime the thing.

Not sure you can just take the rocker cover off and if there is enough slack in the chain with tensioner out to adjust the timing sprocket to line up the mark with the back of the cylinder head whilst crank is at TDC (If that makes sense).
Or if I'd need specialist tools to undo the sprocket, take off the casing, oil pump out etc

Hopefully no further damage has been done :S
Any advice appreciated!
 

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Discussion Starter #14
Sorry to piggyback off this thread but I didn't really want to start yet another Timing Chain Tensioner thread!
Basically my girlfriends R52 has started making the death rattle.... 2 weeks ago.... Of course it slipped her mind to tell me something was wrong until I got in the car and see the dash lit up like a Christmas tree and it sounding like a diesel.

I pulled the codes and got the following:


Basically a similar P0341 to above plus some rich running and misfiring - I've ordered a new tensioner and will get that fitted but I was wondering what would be involved in retiming and whether it's worth doing myself or if someone has a ballpark figure for what they'd charge to retime the thing.

Not sure you can just take the rocker cover off and if there is enough slack in the chain with tensioner out to adjust the timing sprocket to line up the mark with the back of the cylinder head whilst crank is at TDC (If that makes sense).
Or if I'd need specialist tools to undo the sprocket, take off the casing, oil pump out etc

Hopefully no further damage has been done :S
Any advice appreciated!
I believe you have to remove the oil pump and rocker cover, you have to line up the marks on the cam sprocket and crank sprocket with the gold links on the timing chain. I attempted to re time mine but couldn't get the crank pulley off (the tool i bought was shit) it ended up going to 1320 for a rebuild (due to burning oil but thats another story)
 

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hello i have a 2003 mini s and i had a code for p0340 and the car would run perfect until the light came on so i replaced the cam sensor and the code disappeared and know i have p0341 any suggestions
 
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