fuel 44 is heated oxygen sencer bank A other term lambda senser the jag has two.
This means Idle speed control motor (ISC) or valve
Fuel Fail 37 is either a fault with the EGR Valve or its Solenoid
It is the code for the TPS Throttle position sensor
Ignition Amplifier Failure
Fuel Fail 47 Idle speed contol valve - coil 2: Open or short circuit.
Fuel fail 39. EGR circuit. Faulty system operation. Is on my 90 xj6 as well- going to take EGR valve off and clean it- see what happens.
Evaporative canister purge control valve circuit fault
Yes, the Jaguar XK8 does have a fuel pump.
2 things are common. Mass air flow sensors fail, fuel pump issues check fuel pressure first do it when vehicle is "acting" up. 35-42psi . have seen fuel pressure regulators fail pushing psi up to 60psi. too high
Hard starting is the first symptom. After that is will just fail to start.
On a 1993 XJ6 the fuel filter is bolted to the underside of the car on the nearside near the rear wheel-arch.
low battery. had battery tested load type. faild replaced battery fix code 29 thank you