I am not at all technical so was wondering if anyone could offer some advice on an issue I’ve had with my 06 plate Cooper S Checkmate.
Having had an Inspection 2 done at the main dealer, the oil service light is now on so I was going to get it booked in. Over the last few months it’s been ‘lumpy’ when idling and has had the ‘ticking/tapping’ noise from cold start which goes away over time.
Now, my wife has recently taken a job which means she’s travelling over the severn bridge a few times a week and she said that the car feels like it’s ‘holding back’ but only once she gets to the bridge. It does it every time. She doesn’t do much motorway driving so like any good husband I just shrugged it off as wind buffeting.
However, the other day she lost all drive just after the bridge and costed to the hard shoulder. Restarted and it was fine (apart from EML) and continues to be fine. The EML went out later that day.
Therefore, I thought, I’ll get another Inspection 2 done as it’s probably a filter or something causing some kind of starvation to the engine. Rang up to book it in and explained my reasoning to the garage but he said that I only need the oil service but that the timing chain tensioner is the culprit for the ‘tapping’ and most likely the ‘holding back’ too.
As I say, I’m not technical but with my very limited knowledge this sounds feasible but would really appreciate any feedback as I’d hate to throw money at the wrong solution.
I would say before you do anything you need to get the fault code it could be a combination of a few things holding it back.
It could be a bad MAP or TMAP sensor, a bad vacuum pipe, or a bad O2 sensor or a bad bypass valve.
So I would say get the code read first and work from there if you get the codes read post up the P code and we can help :-)
The tappity noise could be the timing chain tensioner or may be a bad hyd tappet if your oil needs changing, which I would advice to do every 6 to 7k get your self a bg service kit
Iv recently had issues with my 03 cooper S basically sounded like a diesel and drove like a one! at red line it used to loose all power and throw EML and various other lights on anyway after a some research i had the timing tensioner changed which sorted the rattle out and then changed the bypass valve which wasnt closing properly therefore loosing most of the boost
hope this guides you a little
p.s the rattle appeared when my engine was hot not when cold
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