Power loss over 3,000 rpm - mk2 Tdi ibiza 90

ibizaderv

Guest
My ibiza (1998 mk2 90bhp tdi) seems to be losing power over 3,000 rpm - mainly noticeable in 3rd and 4th gear.

It feels like the power is momentarily shutting off above these revs. It is not a total power loss, more a lumpy delivery.

Does anybody have any ideas?

I thought it might be the airflow sensor?
 
Progressive Parts, performance parts and tuning specialists