My 1990 Jaguar xj6 Sovereign won't start. On Thursday, I drove home from work and it ran great. That evening, I went out to start the car and it tried to run, but kept dying. I've checked all fuses and they are good. I pulled the panel off of the dashboard on the passenger side and checked what I believe is the fuel pump relay. I connected a wire from post 85 on the relay to the positive post on the battery, then a wire from post 86 on the relay to the negative post on the battery. The relay clicks as though it is working correctly. I checked for power to the fuel pump using a test light. I connected the test light to the terminal on the pump and, with power on, I touched the other shaft of the test light to ground. No power. Where could the problem be?

SOURCE: Instrument lights won't turn off

hi,seem lighting switch is grounded or wiring for cluster is grounded,if can remove the lighting switch disconnected the wire,see if light in cluster is off,switch or wiring must check,ty

Harvey N Tawatao

• 3854 Answers
• Posted on Apr 06, 2009

SOURCE: fuel pump problems 2003 s10 chev 4.3 v6

Your ECU is what acctivates your fuel pump realy. Put the key on the run possition and pull the ecu fuse for a few seconds and reinstall it ans it should accivate your realy for 5 seconds, Good luck.

SOURCE: STALLING PROBLEM TURNED INTO NO START 1990 MB 300 SL

hello,good day,first we are in fuel side,better to install a fuel gauge,to determine the right pressure, is not mention your fuel pump relay,this should also check,some occasion the power supply is missing,now if all is in order (fuel side) then your switching unit(transistor box) need tobe check,assuming your engine is 103 engine,ty

SOURCE: 1987 GMC sierra , no fuel pump power.

The inline fuel pump fuse on the passenger side firewall is good? Are you jumping it with 12 volts at the test lead or the fuse?

SOURCE: 85 xj6

here is a web page w pictures to do just what you are asking
http://one-more-time.us/jaguar/