Hi everyone, any ideas on why I have no power at my fuel pump on my xjs?.

 

could be a fuse a relay or the fuse-able link on the pump harness

 

do you haven no power, or no ground?

 

Could the inertia switch have tripped?

 

Hi guys,checked inersher switch which is down,checked terminals with a metre on fuel pump and no power at all.hot wired pump straight to battery ,pump only done a sort of donk donk when I flashed the terminal on the battery.

 

What year and engine?

Cheers
DD

 

Hi Doug it's an 89 3.6 auto,fuel pump relay is under passenger footwell with main relay and ecu it just stopped when I pulled it out of garage.engine has spark to plugs and cranks.just something to do with fuel to engine me thinks ?.

 

I'm not familiar with the 3.6 fuel pump circuit so I'm no help in trouble shotting why it isn't being powered-up

But, when jump-wired, the pump should hum....not go 'donk'. If nothing else it sounds like the pump might be kaput.

Cheers
DD

 

i had a issue with mine, they had just put a new fuel pump in just before i bought it and i started having a intermittent no run issue of the fuel pump. i was getting power to the plug in back near the batt. but pump not running.

took the plate off that holds in the fuel pump and without removing the tank had access to the plug ins for the fuel pump, tested power at the fuel pump side of the harness no power. tested at the connector side near the battery had power. removed the harness and there is a fusible link in the harness right near where it plugs into the top of the fuel tank, and that is where my issue was.

if you jump the fuel pump and it just goes clunk and not hummm your fuel pump is likely bad. your bad fuel pump may have taken out the fuse-able link though.

 

Thanks guys I'll look for the fusible link, many thanks.