loss of power any help please

[steven 850tdi]

hi all just to tlt you all know i have a VOLVO 850 2.5TDI

and its developed a problem sometines it seem to go like hell when the turbo comes in and other times its very very slugish heres a list of things ive done to try and solve it i have changed ,,,E.C.U,, TURBO,,E.G.R VALVE AIRFLOW METER AND THE TO SOLENOIDS NEAR THE AIR BOX ONE GOES TO THE WASTGATE AND AIRPIPE AND THE OTHER JUST HAS 3 PIPES COMING OFF IT AND IVE ALSO CHANGED THE FUEL FILTER

i have done all these things and its still the same has anyone on here encounterd this problem or something like this help is needed thanks people

[steven 850tdi]

can any one help ???????

[NI_Volvo_Nut]

Have you changed the timing belts at all? Pump timing is critical on these engines

[steven 850tdi]

ye mate ive had the pump timing set with a dial gauge mate glad yours is back on the road mine is m.o.t and insured just waiting for the policy so i can tax it

[NI_Volvo_Nut]

The engine I took out of mine was hard to start and very sluggish, I'm torn as to weather it was a pump problem, a head gasket issue or the wrong engine code fitted, the engine had been changed at some point, so for that reason I decide to replace with a known good engine, seems to have cured my porblems, its now easy started and a flying machine

From what you've done so far, I would suggest removing the pump and having it tested, is your engine management light on? (Lambda light) Any fault codes stored?