Question about 1990 Jaguar Vanden Plas
Car was hesitating now will not start
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: 1992 XJ6 fuel fail code 22
FF22 is Fuel Pump Drive failure
ECU looks for sognal to the fuel pump relay.
found in jaguar-forum:
"I'm 99% sure that you have a bad fuel pump connector sending a high resistance fault to the CPU. Check your fuel pump connector at the pump. There is a very short harness in the trunk behind the spare tire and the panel behind it. I think the wires are red and blue? Anyway, the tough part is where they tend to go bad is actually at the pump in the top of the tank. You will not be able to get to it unless you have very small hands. You can get to it easier by dropping the tank a little, you probably won't have to remove the lines, just the tank straps. I have seen this connector overheat and burn. Try and clean it up and apply white grease to it.
If you start to have stalling problems in the future, strongly suspect this. Jumping the fuel relay gave me a little extra juice to the pump so I could move the car."
Posted on Mar 31, 2009
this has to do with the engines ability to warm up and meter the fuel. either the thermostat is sticking or the coolant temp sensor is out of range. there are 2 of them at least, one for the guage and one for the pcm. if you find it is the t-stat sticking, replace with jaguar parts.
Posted on Nov 15, 2009
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