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no power to fuel pump HELP
https://forums.tipec.net/viewtopic.php?f=4&t=11034
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Author:  dippydi1066 [ Sat May 21, 2011 8:42 pm ]
Post subject:  no power to fuel pump HELP

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

Author:  tr7v8 [ Sat May 21, 2011 9:28 pm ]
Post subject:  Re: no power to fuel pump HELP

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.

Author:  Eric Finley [ Sun May 22, 2011 4:37 pm ]
Post subject:  Re: no power to fuel pump 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

Author:  dippydi1066 [ Sun May 22, 2011 5:46 pm ]
Post subject:  Re: no power to fuel pump HELP

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

Author:  tr7v8 [ Sun May 22, 2011 11:33 pm ]
Post subject:  Re: no power to fuel pump HELP

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.

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