D40 Surging

[parkwoodshed]

I’ve got a 2007 D40 which surges or wont rev up when starting and then drives ok but say 30min later after driving does the same. Injectors recently professionally overhauled. Have tries the fuel additive no improvement. Could it be old fuel or slug in tank.
i don’t drive her much …

Randal

 

[Phunk]

Main one I see going wrong is the Suction Control Valve, which is relatively easy and cheap to replace.

The other one which I did on my own terms was changing the intercooler pipe on the passenger side, the original rubber pipe was really soft and felt ready to split.. yours could be popped.

The last one could be the boost solenoid, I'd start with the SCV first to be honest