3.9 Fuel Pump Relay internittent failures - Defender Source
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Old September 3rd, 2013, 12:47 PM
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Dave Johnson
'91 RRC
Join Date: Jan 2011
Location: Rochester, NY USA
Posts: 77
3.9 Fuel Pump Relay internittent failures

on 3 occasions, when i go out to start my 3.9 rover the fuel pump relay won't come on. two of the times the engine had been running, third time it was from a cold start. not sure what is going on. on saturday, it happened while out on a latte run, and after monkeying around with the relay in the parking lot, i got it to reset (i think - heard a click after poking at the terminals with a test lamp) and then turned the key and it worked just fine. it also seemed quite warmer than normal to the touch.

my fuel pump is sounding a bit noisy - i will replace filter this weekend...pump is quite new. the first 2 failures happened about a month apart...the latest failure was about a week apart...
a thread on a jaguar site had a few comments that a dying/overworked fuel pump will draw too much current, heat up the relay and it will not open/close properly, causing intermittent issues.

Could my fuel filter be getting bogged down, overworking the pump and eventually causing the relay to fail?

Anyone have experience with this on a rover?
Dave J.
'91 RR Classic
'01 RR 4.6 HSE - Gone!
'00 Disco 2 - Gone!
'95 Disco 5-Spd - Gone!
'92 RR County SWB - Gone!
'63 2A SWB - Gone!
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