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just run it up without the belt on. runs quieter and smoother but vibration still comes in at 2000rpm

Not tried it without the belt yet, will do that tonight. Its an Auto, so no flywheel?

Tried that. vibration starts at 2000rpm on very light throttle and stays till 2500rpm. its there on overrun through the same rev range. bit concerned about running it up without the belt on!

about 5 to 10 min. Got a new viscous fan on it! as the old one had worn bearings. MAP sensor clean, MAF sensor new.

only prob i know of is the porous block and the usual S2 problems. with ACE, SLS etc. but dont let that put you off! I'd love a V8 disco S2, just cant afford the fuel!

if you can come up with the solution to my problem you can have mine!

just worked out how to get the numbers out of nanocom! Accel: Road speed = 44 Engine speed = 2391 Idle speed err. = 1495 Battery voltage = 14.349001 Pot trottle 1 = 1.788000 Pot trottle 2 = 3.297000 Pot trottle 3 = 3.443000 Pot supply = 5.037000 Ambient pressure =...

Hve taken the belt off (with difficulty as i cant find my spanners for the fan!). Have found: aux belt tensioner below alternator has a play in it and when spun sounds like the bearings are shot Power steering pump has slight play on the pully (up and down), when being rotated appears to...

Will start stripping it down tonight. How's the best way of testing the crank damper? or will it be obvious if it's knackered? I'll also record the fuelling again on the way home from work and post the readings tonight just incase someone can spot something thats not right there

yeah, the boost is ok

The car does only in the 2000-2500rpm rev range

Have checked the ECU inside and it was dry. Did wonder about the fuel pump but wouldnt it run rough throughout the rev range?

My TD5 runs rough between 2000 to 2500rpm and is engine related as it does it when stationary, although it is amplified under load. Below 2000rpm it sounds a bit rattly, over 2500rpm the engine is strong and pulls like a train with no problems. It came on suddenly when driving on the M25. So...

yeah, its next on my hit list. just got to wait for it to stop snowing so i can whip the aux belt off!

at the end of the crankshaft :) big lump of metal and rubber (drives the aux belt)

What about a worn crank harmonic damper? my TD5 sounds tappy and was originally thinking it was injectors/lash adjusters etc but when reved over 3000rpm, the engine sounds perfect. I also have a vibration at 2000 - 2500 rpm which is engine related (and when engine sounds it's worst) and can be...

have you checked the ECU/injector harness for oil?

Driving home tonight on a nice straight bit of road, put my foot down and all of a sudden the M+S lights started flashing and the box went into limp home mode. have tried leaving it for a while, still no joy, tried moving the lever from park to first a few times, still flashing lights. Could it...

I have a similar problem only mine is a lot noiser when cold (sounds like a bag of spanners! unless reved over 300rpm). was going to check the adjustments on the injector plungers at the weekend

thought i was told ages ago that if you cant hear the filter wind down it means trouble. all old filters have made a noise