Sorted! - Fuel pump not priming

Post by **indigolemon** » Wed Jul 23, 2014 2:04 pm

My mate Dunc drove his 4th gen to work on Monday. It's been there ever since

All fuses fine. Main relay removed, re-soldered and refitted - still no joy. Going to check voltage to the fuel pump later tonight.

Does anyone else have any other ideas? I'm thinking the immobiliser could be another culprit?

Post by **Merlin** » Wed Jul 23, 2014 2:09 pm

Try putting a new test earth to the fuel pump.

3rd gen steve · Post by **3rd gen steve** » Wed Jul 23, 2014 2:31 pm

Is there a fuel cut off fitted to the car? Most of the cars I work on have a switch fitted, usually somewhere stupid where it can get hit and switch off. Sometimes the switch can fail also , to check it just bridge the contacts and the pump should fire.

Post by **indigolemon** » Wed Jul 23, 2014 3:20 pm

@Merlin - Yep cheers! Will give that a shot while I'm in there.
@3rd gen steve - Pretty sure the 4th gen hasn't got such a thing, will have a good look though.

Post by **bluejackhustler** » Wed Jul 23, 2014 6:11 pm

The immobiliser does cut the fuel pump supply on my old 4th gen. Should be able to bypass it and connect the original feed wire to the relay to check?

Post by **indigolemon** » Wed Jul 23, 2014 11:28 pm

bluejackhustler wrote:The immobiliser does cut the fuel pump supply on my old 4th gen. Should be able to bypass it and connect the original feed wire to the relay to check?

Sussed it earlier after some poking with a multimeter - was exactly this man! Re-connected the wire and we're back, think the immobiliser has bought it