hi. (72 1.7 FI). my fuel pump won't run. I've checked all the fuses, relays etc.
when I used an alternative power sourse (battery charger) to the fuel pump it works, so I know it's an electrical problem.
Could it be in the actual ignition switch ??? Just looking for ideas, let me tell you I am really bad at electronics, so please keep answers so an normal ignorant person (myself) can understand.
tks for your help.
mike
Have you jumpered the relay on the relay board to see if you can make the pump work with the key in the "run" position?
no,, haven't. so I'll give it a try.
QUOTE (mrobin @ Dec 19 2005, 03:41 AM) |
so please keep answers so an normal ignorant person (myself) can understand. |
Text article on the D-jet fuel pump control system--
http://www.914fan.net/fuelpump.html
Flowchart for troubleshooting the D-jet fuel pump control system--
http://members.rennlist.com/pbanders/FPChecklist.htm
--DD
thanks for input.
the FI brain is hooked up, I know that it only runs 2 seconds prior to starting.
the car has run great forever, just yesterday I turned the switch and didn't hear the fuel pump run. I checked relays, by swicthing the other realays with items that run ok. The overall condition of the relay board is excelent, matter of fact the PO was realy meticulus about all the wiring.
Last night I hot wired the fuel pump (just ran wires to ground and to the fuse box). it ran ok, but I know that's not the right way to do it.
QUOTE (mrobin @ Dec 19 2005, 12:02 PM) |
The overall condition of the relay board is excelent |
I would first do the follwing...after you rotate the fuses...
check with an ohm meter, or with a light bulb and some sets leads...
check the wiring from the relay board to the fuel pump...if it is in the stock location, there is a gromet in the engine shelf that might be gone and the wires might be chaffed or cut...
So check that set of wires first...the colors are the same on both ends...
The next thing I would do, and have had to do...it get some of the spray type electrical cleaner...it is alchohol based...
Get a clean tooth brush.
Take off each connection at the relay board and at the FI brain and clean clean clean...
Rich
I forgot one...
Check the read lead from the starter to the relay board..make sure it is clean at the starter...and at the relay board.
Rich
thanks for the help.
I already did the fuse thing (put all new fuses in actually). but i'll try the starter
to the relay conections.
every other conection I can find, I steel wooled and cleaned with achohol (then drank some.)
thanks again
Another question. What hapens if I run the car with the fuel pump hot wired to the fuse box ? Is this bad ? The car runs that way, but I don't want to cause any damage.
tks
QUOTE (mrobin @ Dec 19 2005, 02:15 PM) |
What hapens if I run the car with the fuel pump hot wired to the fuse box ? Is this bad ? The car runs that way, but I don't want to cause any damage. |
Andy
I'll try not to crash !!!
mike
update...
thanks to all for your help. it was the relay. even though I switched a couple of relays arround, it didn't help...then i put in a new relay and ...hurray it work's....
I have exactly the same problem on my 914, primes for a second then dosent start. Or starts if i hot wire the pump on.
I've tired most of the above bar replacing the relay with a new one( swapped em round etc).
I'll try and make the relay contact tighter, as at mo it just slips in easily.
What a pain! hoprfully this will sort my 914 1.7L !!
cheers and i ve printed off all the info,
Paul
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