[Palaur]

Engine pulsing u acceleration 2,5d ( audi )
Hello, just bougt me a Volvo S80 2.5D ( audi) year 1999 - 2000 auto- 147000kms..

I have the following problem: Each time when rpm reach about 2500rpm the car accelerate for 1 seconds and then waits about 0,2 seconds, then again for about 1 seconds, and so on...about 500rpm pulsing up to top rpm. All the power is available (it still reaches top speed) but it seems like the engine holds each time a little bit, like surging. starting at 2500 - 3000rpm what causes it? No engin fault lamp. Cleaned the maf, egr ok.
best regard paa

[Palaur]

?:-/

[Palaur]

?:-/

[dieselmagnus]

Magnetic valve (Magnetventil in swedish) pending turbopreassure is often this valve.

[Palaur]

Magnetic valve (Magnetventil in swedish) pending turbopreassure is often this valve.

hey, thanks for the reply :D . have now checked the dynamic pump setting, changing vac hoses and tried a new maf sensor without any change ...is it the valve that measures the pressure u mean. Or is it the valve that are mounted at the air filter housing?

[d98josu]

What do you mean by mentioning audi? I think it causes confusion at the moment.

[dieselmagnus]

Because the 2.5TID is the audidieselengine and not the D5. No the magnetic

[Palaur]

First and foremost I want to thank you all for your answers, :D i will look at turbo valve and pressure sensor at first day of light..