Porsche Enthusiasts Club Forum

hi, really need help please
i have changed all the normal things relay and fuel pump to find
i have no power to the fuel pump. i have put pump on battery and car
will run she is a 924s so i need help please on this problem

Di from memory the relay on the K Jet system is actuated by pulses from the ignition system. This is a safety thing to ensure that in the event of a crash & the engine stopping, the fuel pump cuts out. So you need to investigate the wiring to & from the relay. This is a PITA job & will need a wiring diagram. My knowledge of this is hazy as it is a long while ago I was involved in this system, we have other members who have 924s that may be able to help.

Jim

He say's if I'm reading correctly the car is a 924'S' so that makes it a Bosch L-jetronic system the same as a 944. Back to you as our 944 expert, hope you can help.

Regards Eric

yes your right everything on the car is the same as the 944

Next time engage brain Jim before typing.....


OK, the fuel pump is triggered from the DME relay so needs a trace from here to pump. Most of these problems come down to damp & poor connections in the fuse/relay box. With a meter check if it is a question of no 12V or no earth on the pump.