[pandoo1]

Hi guys,
so basically I started my car today, and it started to shake quite violently on idle. I didnt get any msgs pop up on the dash or anything!

Anyone got a clue?

Thanks

[KM79]

Any vibrations through the clutch pedal?

[pandoo1]

Originally Posted by K_M79

Any vibrations through the clutch pedal?

There is but very minimal only when I press the clutch.. could it be the glow plug?

[KM79]

Ok so unlikely the dual mass flywheel otherwise they're would be heavy vibrations through pedal.Doubt would be the glow plugs,as the engine can comfortably run without them.what age and mileage is on the vehicle?

[pandoo1]

2008, 75k

I really need the car for a long journey on tuesday and dont trust taking it in its state..i have to mention that the service msg came on if that helps

[KM79]

So n57 engine.The engine management lamp or the 'service due' lamp?

[pandoo1]

Originally Posted by K_M79

So n57 engine.The engine management lamp or the 'service due' lamp?

the service due one bud, yeah n57 engine

[KM79]

Ah ok.Strange there's no EML if it's running extremely rough.Is it still doing this?Chugging out of the exhaust?

[pandoo1]

Originally Posted by K_M79

Ah ok.Strange there's no EML if it's running extremely rough.Is it still doing this?Chugging out of the exhaust?

Nothing at the back, got my 335 exhaust conversion done 4 months ago, so theres no issue there.. might just be a service. I had the car for exactly one year this month, havent serviced it yet maybe its that??

[KM79]

No wouldn't think so,going back to the clutch again does pressing it in and out have any bearing on the vibration?Does the engine rev freely ie no misfiring?

[pandoo1]

Okay so I just started the car now let it run for abit, it seems perfectly fine! LOL Strange

[richk84]

Originally Posted by pandoo1

the service due one bud, yeah n57 engine

N47?

[pandoo1]

Hmm Im unsure now, I didnt know they made e92 coupes with the n47 engine..

[KM79]

Oops yeah too quick on the keys there!

[KM79]

N47-20d
N57-30d

[pandoo1]

praying its not the timing chain then..

[Len_Beach]

It'll be the glow plug control unit. Does it idle like crap and then settle down when it's warmed up?

[pandoo1]

Originally Posted by Len_Beach

It'll be the glow plug control unit. Does it idle like crap and then settle down when it's warmed up?

Well I havent driven it enough to let it warm up properly to know but yeah at the start it idles like crap!

[tmarshall57]

Get the codes read. If it runs rough and then settles down it is likely the glowplug control unit. Part costs around 80 but can be a little fiddly to fit.

[KM79]

This is true to a point.Ive had cars that have had faulty preheater control units but the cold running is never excessively bad,it's not perfect but it doesn't sound the issue here.

[old grey steve]

We had a n47 in a few weeks ago with a what was described as a misfire slight rough running, no faults but when you opened the drivers door fir instance and put your hand on the top of the door you could feel the tremor at tick over. Revved as you'd expect drove fine.

On the MOT ramp vehicle was inspected noise was strongly suspected as coming from DMF assembly dip,the clutch of course things settled sadly unable to prove as this was a traders cars and they're tight. So some poor sod will buy that one totally unaware

[KM79]

Originally Posted by old grey steve

We had a n47 in a few weeks ago with a what was described as a misfire slight rough running, no faults but when you opened the drivers door fir instance and put your hand on the top of the door you could feel the tremor at tick over. Revved as you'd expect drove fine.

On the MOT ramp vehicle was inspected noise was strongly suspected as coming from DMF assembly dip,the clutch of course things settled sadly unable to prove as this was a traders cars and they're tight. So some poor sod will buy that one totally unaware

This was my initial thought too