What to do if your VW TDI loses power?
What to do if your VW TDI loses power? If you are not sure whether it is bad, simply rev the engine to 5100 RPM while in park or neutral. If the MAF is bad, you will not be able to do it. If the MAF has not failed totally, you should be able to do it. You can also unplug the plug connector. The ECU will then replace the faulty signal with a default value. Why is my Trafic 1.9 dCi not revving? There's the valve itself and the silver colour gasket. It is held in place with three...