20 replies to this topic

[alex.j.richardson]

breakthrough in my problem!!!
just found out the by connecting the battery straight to the pump it work so now i know that there is a problem somewhere else!
any ideas where it may be or how to get arount this problem
thanks again!

[Sprocket]

Inertia switch, relay pack, Fuse, broken wire, or just general bad connections that the Mini always suffers with.

The fuel pump fuse is tucked up under the scuttle panel somewhere, its an inline jobbie.

The inertia switch is the black thing mounted on the bulkhead, press the top down, if it clicks, it had tripped. Check its continuity with an ohm meter.

The relay pack is difficult to check, but if you are VERY careful, you can remove the cover, and not letting it touch any of the bodywork, get some one to watch the relays as you key the ignition on, one relay should energise for a couple of seconds and then de energise, if it doesnt, the relay pack could be faulty. If it does, but the pump still does not run, you need to check the voltage at the inertia switch, if there is no voltage there, you need to check the voltage at the fuse, no voltage there, you need to check the voltage on all the brown only wires at the large connector on the relay pack, no voltage there and the fuse link may have blown. Remember, that the pump only runs for a couple of seconds when the ignition key is turned and while cranking, if the engine is not running, the fuel pump wont be.

Broken wiring especialy on the fuel pump circuit is common.

Other areas to look are the large thirteen way connector on the bukhead, the thirteen way connector under the dash on the passenger side. Check for no bunt out contacts. The loom runs from there to the rear of the car under the carpet along the floor on the passenger side, into the rear passenger side bin, behind the rear quater trim and into the boot behind the tank.

The Mini Fusebox is always a problem area. Take it off and have a look at the connections on the back of it

[alex.j.richardson]

i have now found out that i have power at the pump and that tha pump works but still nothing works
any ideas?
thanks

[Sprocket]

Check the ground wire that attches to the near side til light brcket in the boot. If you re getting 12v at the pump, but the pump does not run, and, you have checked that the pump does infact run when 12v and ground are provided independantly, then it is a ground fault, and that is only a short bit of wire from the pump to the tail light

[alex.j.richardson]

i have now rewired the pump to go from the inetia switch to the pump and a new earth and everything works fine
thanks again for all your help
alex

[PLIMERICK]

how did u do this? alex