What is the challenge with cleaning? Is it access or does cleaning not tend to work on these? And if I need new ones would I be better looking for a salvaged bat wing?
Thanks. Before I begin on this is there anything else that could be causing my weird pulsing/hunting engine at low revs (1400-1700). It does it when I hold the revs but only if the car is moving. If the engine goes into limp mode it doesn’t do it.
Check turbo vanes are free to move - remove the actuator arm to check. Tip - tie a piece of fishing line around the circlip before you try and take it off then you will not lose into the engine bay.
Failing that open the actuator and clean and regrease the gears and check that none of the electrical connections haven't burnt out. If you are not confident doing this then the actuators can be re-furbed.
The car has a brand new EGR a turbo actuator off a car that was working fine and a new back pressure sensor from MB.
The pulsing/hunting only started after the garage replaced the glow plugs and fitted the new EGR. I thought the EGR may be faulty so made them replace it. Still have the same problem.