come to start a car,fuel pump/relay works fine
tries to rev,nearly cuts out as fuel pump relay loses power,then the relay gains power again
it keeps on doing this for a while
wtf is up with it
havent got time to have a look right now so any suggestions?

 

I would have said its a fault fuel pump relay but I'm not all that clued up with electrics so could well be wrong lol. Ask Daz C he knows everything about these

 

If the relay is deffinately de-energising then it can only be wiring or the relay itself Nige.

 

daz
i reckon its the wiring but it was fine ages ago before a couple of changes,im thinking the wire from the alternator or the rev counter maybe
its just getting time for me to check it
brand new relay too

 

S1 rev counter wire is purely for the rev counter and which wire on the alternator do you mean? If it's charging it won't be alternator wiring.

The S1 fuel pump relay is driven directly from the ECU on pin 20 and is a green red.

 

I'd check the relay mate. Even though its new, doesn't mean anything. My S1 packed up, would start and run for a few seconds and would then cut out. Brought a new relay and still the same problem. Brought a new fuel pump and still the same problem. Spent about £50.00 in autoelectrician bills and still not working. Got my auto electrician on the phone to Daz and it ended up that the relay Ford supplied me with was also faulty gotta really! Do all the checks on the relay 1st as its far easier than tracing all the wiring.

(MJC on a friends login)

 

I was reading that trying to remember a Danny ringing me but could only remeber MJC.....then I got to the end of the post!

 

***********scrap yard tip ********

saab 93 turbos also use the same relay and fit in ya pocket......
i got 4 out of one yard in one day !!!!

 

dont know how ya live with ya sel scott

 

relays are still available in fords, about £40 with a no return policy.

 

Thats correct but I made them replace mine as I kicked up a stink saying it never worked in the first place

 

yep used the car without the relay and its working fine
only bought a new relay cos i couldnt find the old one
only found the old one today