Don't know about OVP - when it goes does it not cut fuel pump power?

i'm not sure about a bad OVP cutting power to the fuel pumps. i believe that its main job is to protect the ECU. my understanding of the whole OVP concept has been that if the OVP is bad , then your ECU can't operate properly, and therefore anything that is controlled by the ECU (ignition, fuel injection) can be affected.

did you check out the OVP ? is it the updated one? Updated number should be : A 000 540 67 45

did you try the tap test?




Is the FP supposed to prime every time you turn the key to ON? Mine will do it once, then not again for several seconds regardless of how often you turn the key or remove the key and they re-insert and turn.


No the fuel pumps do not prime every time you turn the key to ON(at least mine dont)


Is there a delay or pressure monitoring at work??

i am not an expert, just trying to help, but unfortunately dont know .


i guess the best thing to do would be to try and get a hold of a fuel pressure gauge, and verify that you're getting enough fuel pressure at the fuel rail/injectors. then you will be able to rule out any potential fuel problems and if necessary move on to the ignition.

good luck man