Question about 1986 Jaguar Xj S

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I have a 1986 Jaguar XJS V12. I'm trying to remove the fuel Tank. Is there any bolts on the underside of the car that has to be removed?

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There are two 13mm bolts in the back window under the carpet that have to be removed. Remove the two plastic screws, Remove the carpet and find the two 13mm bolts..

Posted on Jun 25, 2009

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My 1991 XJS V12 has been sitting for 9 months low fuel, added fuel and tried starting, it turns over fine but does not fire, is there a way to check the fuel pump or if gas is getting to the engine?


first check for a spark thats more than likely ok. the most poss cause is the fuel pump. on the the fuel rail there is a pressure test point like a tire valve. connect a pressure test gauge and crank the engine you should get about 28 -36 psi if not the pump is more than likely stuck, try giving the fuel tank bang with your fist with someone cranking the engine remove spare wheel and trim board for access most likely the moisture in the remaining fuel has corroded the pump, good luck

Sep 16, 2016 | 1991 Jaguar XJS

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Qhere do i find the coolant temp sensor an the map swnsor


Jaguar Sensor, XJ6, XJ8, XJS, XK8, S-TYPE, X-TYPE, XJ40 ...

www.jagbits.com/jaguarsensor.php
FITS: 1993-1994 6.0 XJ12 AND 1989-1993 V12 XJS FROM VIN 157118 ON, 1994-1996 6.0 V12 XJS FRONT DAMPER .... LNA1622AA - MAP SENSOR ... C42166-USED - USED SENSOR COOLANT TEMPERATURE FOR FUEL INJECTION

Sep 25, 2015 | Cars & Trucks

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Where is the fuel filter location for a 1994 jaguar XJS 6,0 V12?


next to the tank at the top of the body under neath. or on the updated version engine bay follow the fuel line and it goes into a contaner with 2 pipes on it that is the filter.

Oct 16, 2013 | Jaguar XJS Cars & Trucks

1 Answer

How to remove fuel tank on a 1994 jaguar xjs?


remove covers in boot behind seat there are mounting brackest there hopfully not rusted take off bolts remove brackets remove filler pipe but getting it out is a carry on as its a tight fit may need to remove back seat as well

Aug 17, 2012 | Cars & Trucks

1 Answer

No power to fuel pump


If you tested the pump with another equal voltage source then the pump is bad and needs replacement

Jan 19, 2009 | 1986 Jaguar XJSC

1 Answer

Cant start my 89 v12 xjs


Replace the crank sensor under engine. 90% of the problems is here.
Einar Norway

Dec 13, 2008 | 1986 Jaguar XJSC

1 Answer

XJS V12, 1986. Loses power and splutters on hard acceleration


Most probably is the crank sensor under engine worn out. )0 % trobleshut starts here.
Einar Norway

Sep 27, 2008 | 1986 Jaguar XJSC

1 Answer

1989 jaguar xjs v12 fuel mixture


Chances are the coolant temperature sensor or its wiring have failed, or the vacuum line to the MAP sensor is leaky or broken (I believe the V12 in '89 guise uses MAP sensors). The MAP sensor measures Manifold Absolute Pressure. Along with this pressure the ECU looks at engine RPM. It also measures air temperature. Knowing pressure and temperature we know density, and knowing engine speed tells us how much volume of air is going through the engine. All of this together is computed into air mass and is used to calculate how much fuel mass should be admitted. If the vacuum line is broken, the ECU reads less vacuum and produces rich mixture thinking that the engine is under high load.

Aug 03, 2008 | 1986 Jaguar XJSC

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