330d - where's the power gone..?

[Rude]

Any ideas? 2004 330d, and major flat spot at 2,500 and gutless above this. Any ideas? Has my turbo died?

[Silver993tt]

Maybe the turbo hose has come loose.

[NickXX]

Sounds like your low pressure fuel pump has gone. Circa £250 to replace.

[sprinter11]

disconnect the MAF and see if theres any improvement?

[Tea Pot One]

Silver993tt said:

Maybe the turbo hose has come loose.

This is quite common .... apparently

[TheEnd]

Diagnostics-
If it is the presupply fuel pump you'll get a low pressure at cranking fault code.

Boost pressure actuator or boost pressure reservoir is the actuator or sticking turbo vanes.

[nobodyknows]

When mine had this it was a blown turbo (at 30k miles).

[Rude]

Thanks all. Will have a look nxet weekend. By the way, is it obvious if the turbo hose has come loose? What is the MAF? (I'm not the most technically minded!)

[Rude]

nobodyknows said:

When mine had this it was a blown turbo (at 30k miles).

mine is at 115k miles...so may be due for something to go wrong

[sprinter11]

Does It pull strong in the higher revs?

[Silver993tt]

Rude said:

Thanks all. Will have a look nxet weekend. By the way, is it obvious if the turbo hose has come loose? What is the MAF? (I'm not the most technically minded!)

MAF - Mass Air Flow sensor/meter

[Rude]

sprinter11 said:

Does It pull strong in the higher revs?

Not now - used to pull like a train. Just goes flat at 2,500 rpm and never recovers. Not really noticeable in the lower gears but feels dead in 6th

[sprinter11]

Take the engine cover off
Unplug the maf and take it for a blast

[Rude]

Turns out the inlet manifold is cracked. Oops. Getting replaced today and emptying my bank account tomorrow.
Thanks for the posts - it was obvious that there something amiss when I took the engine cover off and there was burnt oil splattered under the cover. Time to call in the experts.

[soda]

I was just going to suggest checking the manifold.

Happened mine at 95k, easy enough fixed but £420 for a new one is pretty steep. I think cleaning the engine bay afterwards was the worst part.