Need some help
#1
Need some help
My 2002 XK8 has been super reliable but...last night I ran some errands, went into a store for a few minutes, came out and the engine cranked fine, ran very rough and died after about 3 seconds. Repeated this several times with same result. Check engine light stayed on but no other error or gauge readings that were abnormal. towed it home, next morning it cranks fine but won't fire at all. Check engine light code is P1111 Air meter problem. I know P1111 is normal but having the check engine light on is not. Any ideas would be very appreciated.
#2
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Without the engine running the ECM only operates the pump relay for 2-3 seconds when the start position is initiated but the FP fuse should have voltage.
Swap the fuel pump relay with another in the trunk fuse box. The XK8 only uses Fuel Pump 1. All the square brown ones are the same. If that doesn't get the pump running verify that you have B+ at the appropriate socket. The schematic is on the side of the relay. If you have B+ verify that the key start position operates the relay for 2-3 seconds. If not, jump the B+ to the pump side of the socket with a paper clip.
All that fails you need a new pump.
https://www.jaguarforums.com/forum/a...1&d=1389989200
Swap the fuel pump relay with another in the trunk fuse box. The XK8 only uses Fuel Pump 1. All the square brown ones are the same. If that doesn't get the pump running verify that you have B+ at the appropriate socket. The schematic is on the side of the relay. If you have B+ verify that the key start position operates the relay for 2-3 seconds. If not, jump the B+ to the pump side of the socket with a paper clip.
All that fails you need a new pump.
https://www.jaguarforums.com/forum/a...1&d=1389989200
Last edited by test point; 01-17-2014 at 02:16 PM.