Question about Jaguar XJ6

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I have a 92 jaguar xj6 we have replaced the fuel pump and filter and ecu we have fuel up to the injectors but they are not firing what could be the problem?

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Have you got a noid light to test that you have an injector pulse while cranking?other vehicle noids will work as long as they can be plugged into your injector plug.Also make sure you have sufficient fuel pressure.Make sure the fuel system has been correctly bled to remove any potential air locks in the fuel rail/injectors

Posted on Oct 11, 2008

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Starting problems at times


Check fuel pressure, injectors and ECU.

Jul 17, 2008 | 1995 Jaguar XJ6

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Jaguar fuel problems


Its issue with fuel filter.Have you also replaced the fuel filter too.If its blocked then it can also cause this problem.Also in some cases its seen that new fuel pump comes out faulty.Was it original fuel pump or aftermarket fuel pump.Get the fuel pressure checked.If the pressure is low,then it can be issue with the new fuel pump.------------For more help Click the link below:-----http://repairhelpcenter.blogspot.in/2012/05/jaguar-fuel-pump-problems.html
-------------This will help.Thanks.

May 30, 2012 | Jaguar XJ6 Cars & Trucks

1 Answer

My xj6 jaguar has a code fuel 44 set and now it will not start. a couple of time before in the morning, it would start but run poorly would not take gas . let it run for a few seconds and it clears up but...


First...Check th cold start injector.

If the E.C.U. is faulty it is possible that injectors will be inopeative. The E.C.U. may also be responable for any degree of icorrect fueling. Before suspecting the E.C.U. for fueling problems, however, all other likely components should be proven good.

May 24, 2011 | 1993 Jaguar XJ6

1 Answer

1986 Jaguar XJ6 Won't start. rolls over but that is it. replaced fuel pump relay and fuel pump. seems to have fuel at pump inlet, nothing comes out the outlet. I am lost. car ran out of gas before this...


if your fuel pump and relay are new, how about your fuel filter, if your fuel pump is working but no fuel turns out, check fuel pump polarity, if ok, there will be a clogging in fuel lines, take a high pressure air and plug it to fuel outlet in fuel lines test port, allow air to go back up to fuel tank and observe if the air goes, if not, check or change fuel line, if the air goes to tank, direct your fuel relay pin 30 and 87 and check if the fuel runs to the injectors, if not, change a good fuel pump

Jun 27, 2010 | 1990 Jaguar XJ6

1 Answer

I'm trying to replace my fuel pump and fuel filter but I do not know where they are, what tools i need, what is in the way, etc. The car is a 1993 Jaguar XJ6. straight 6 engine 4.0 litre


The filter is underneath where the passenger on the driver side would be. You may have an exterior pump between the filter and gas tank, if not its in the tank. If its in the tank its messy, a little dangerous but relatively easy. A mechanic would take take no more than 2 hours to do the in tank change and there would be no fires....
Basic tools are needed for both, well illustrated in the Haynes Manual. worth the 15.00

Apr 23, 2010 | 1993 Jaguar XJ6

2 Answers

Jaguar xj6 4.0 1990. showing fault code fuel 14, fail 14. what does this code mean ?


2 airflow sensor out of operating range 3 coolant temp sensor out of operating range 4 oxy sensor indicates full rich 5 throttle potentiometer/airflow sensor... (low throttle pot signal with high airflow sensor signal) 6 throttle pot/airflow sensor...... (high throttle pot signal with low airflow sensor signal) 7 throttle pot...idle fuel adjustment failure(idle speed??) 8 intake air temp sensor...open or shorted circuit to sensor 11 Throttle pot at idle: Throttle pot idle trim out of normal range 12 Airflow meter: MAF signal out of range 14 Coolant thermistor: Resistance out of range or static during engine warm up 16 Air thermistor: Resistance out of range 17 Throttle pot: Out of range 18 Throttle pot/Airflow: Low throttle pot signal at high airflow 19 Throttle pot/Airflow: High throttle pot signal at low airflow 22 Fuel pump drive: ECU output to fuel pump relay 23 Fuel supply: Engine running too rich 24 Ignition Drive: ECU output to ignition Amp 26 Air leak: Engine running too lean 29 ECU self check 33 Injector Drive: ECU output to injectors 34 Injector: Looks for Injector dribble 37 EGR Drive: ECU output to EGR switching valve 39 EGR check sensor: EGR not working (normally pipe blocked) 44 Lambda (O2) sensor: Poor mixture control rich or weak (or misfire) 46 Idle speed Control valve: ECU output to Coil AB 47 Idle speed Control valve: ECU output to Coil CD 48 Idle Speed Control Valve: Stepper motor grossly out of position 66 Air pump: ECU output to air pump relay 68 Road speed sensor: Seen speed < 5km/h at high engine airflow 69 Drive/Neutral switch: Seen cranking in "D" or high airflow in "N" 89 Purge Valve drive: ECU output to purge valve
this is all I could find

Nov 09, 2009 | 1990 Jaguar XJ6

1 Answer

92 XJ6 Fuel pump/filter


hi sometimes on most cars if lift up the back seat ther usually the pump unit on the top of the tank with two pipes coming out of it .if ypu can find the relay for the fuel pump connect the terminals 30 to 87 together you should hear the fuel pump run.alternitavely check the power to the fuel pump with a multimeter you should get 12 volt when trying to start also check for broken wirig to pump.

Oct 27, 2008 | 1992 Jaguar XJ6

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