Fuel pump again!

[Lofty999]

Had trouble with the fuel pump a few months ago,played about with my limited knowledge and arranged for an auto electrician to take a look today.Got the garage cleared for him and tried the car,guess what it bloody started!Presume something is obviously loose or not contacting correctly,or wasn't,any ideas would be appreciated as I don't really want to go out and come back with the aa!

[sundance002]

Try large fuse ciuld be bad connection, water does get to them,
Moved mine all inside car, Think its the one below bulk head, someone else will hopefully confirm position

[V1DL3R]

yep behind the bulk head. There is also a small bank of fuses in the wheel arch next to them. They corrode just as much so check them out too!

[Lofty999]

Now not priming again,fuses etc seem ok! Anyone want a gto3?

[GTO600]

Happy to take off your hands As with the others I'd start with the relays & bases.

[Lofty999]

Had a play about,cleaned all rear relays.shorted 2nd from right as I removed,then found fuse 2nd from the back had blown.Dont no if this was because of blowing the relay,are they connected?or wether this was the source of the problem,it's a 20amp,but was definitely intact a month ago!HELP!

[V1DL3R]

Are you confident it's not the relay block itself. If it arced when taking the relay out it could be the bock is corroded or the pins dropped down? This could stop the relay. Is it clicking when you turn the key?

[Lofty999]

Think the screwdriver blade probably contacted the pin wich I assume caused the short,but then I am thick,just wondered if this would have blown the fuse or was it blown before,as I said it was ok a month ago when the problem was first checked

[V1DL3R]

I don't know, most likely but you never know. I guess you have replaced the relay? Is it clicking?

[Lofty999]

Which relay is the fuel pump?I have removed them one by one t and it starts every time until I remove the grey ones,ecu I believe?But which is fuel pump please?

[Rob_W]

Does this help?

[Lofty999]

Rob_W said:

Does this help?

Cheers rob

[Lofty999]

Can't make the bloody thing breakdown again now,could the wiring be damaged,as I have read about this being upgraded by some?Theres obviously something wrong,but I'm stuck!

[Lofty999]

Ran the car today,all fine on tick over for 5 mins then it cut out.Now wont start and fuel pump is not priming again.Any ideas chaps?

[Tuscanny]

Try rewiring the fuel pump if you have not already done it.
Take supply from starter here's a diagram

[Lofty999]

Cheers,thought that may be the case.diagrams a godsend.

[Tuscanny]

It's real easy to do about an hour and all the parts are in hate to say this word hallfords

[V1DL3R]

Lofty999 said:

Ran the car today,all fine on tick over for 5 mins then it cut out.Now wont start and fuel pump is not priming again.Any ideas chaps?

Lofty I had exactly this problem a few months ago, after lots of head scratching I narrowed it down to the ECU. Replaced the ECU and it ran for about 10mins then cut out. It was actually the alternator who was the original culprit. The alternator was overcharging and mucking with the ECU. This broke my first ECU, i think it melted the ground for the fuel pump prime for what ever reason. After switching the ECU, it was only cutting out when the car is warm as the brushed in the alternator heat up and expand and create more current.

I replaced the ECU, alternator and all the fuseblocks and relays. Sorry it's probably not the news you want to hear!

[Lofty999]

V1DL3R said:

Lofty I had exactly this problem a few months ago, after lots of head scratching I narrowed it down to the ECU. Replaced the ECU and it ran for about 10mins then cut out. It was actually the alternator who was the original culprit. The alternator was overcharging and mucking with the ECU. This broke my first ECU, i think it melted the ground for the fuel pump prime for what ever reason. After switching the ECU, it was only cutting out when the car is warm as the brushed in the alternator heat up and expand and create more current.

I replaced the ECU, alternator and all the fuseblocks and relays. Sorry it's probably not the news you want to hear!

Cheers vidlr!!

[TuxMan]

I had a electrical glitch recently a trip to Jetstream sorted it !!! Perhaps sometimes it's best to admit defeat and get the experts to sort .