What should oil pressure be in Jaguar XJS?
Check that the oil pressure is around 40-50psi once the engine is at normal operating temperature; and listen out for timing chain rattles, as the AJ6 (and 4.0-litre AJ16) unit is prone to this on higher-mileage cars, which might involve replacing both the timing chain and tensioner.
What should I know about buying a Jaguar XJS?
If the coolant in the XJS you’re thinking of buying looks brown rather than clean and green, then find another car. The V12 is famously smooth, of course, with only the rattle of a loose timing chain (a common feature on higher-mileage cars in particular) to spoil the serenity. If the engine you’re listening seems noisy, then walk away.
What’s the power output of a Jaguar XJS?
Although the V12’s power output of 291bhp (for the 1983-on HE model) was always the ultimate, the AJ6’s initial 221bhp was powerful enough for most buyers’ needs. The arrival of a six-cylinder XJS did wonders for sales, helping it to remain competitive and popular well into the Nineties.
Where are the cooling caps on a Jaguar V12?
You will also notice it has two cooling system pressure caps, one at the front of the engine and one on the expansion bottle on the wing. Nearer the rear of the engine is the throttle pedastle, this is where the throttle cable operates a circular device that in turn operates the two throttle links, more of that later.
How to test the Jaguar coolant temperature sensor?
Use a bit of wire, paperclip, etc. and plug one end each into the harness connector sockets. Doing this “fools” the ECU into thinking the engine is hot, since there is now no (or minimal resistance) measured. The ECU will not add pulse width correction to the injectors…so no additional fueling is supplied.
What to do if your water gauge is not working?
Check the wire to the engine water gauge sender is not broken . The sender can be tested with a multi meter or to test the gauge I would get a resistor approx. 50 ohms 2 watt to connect from the wire removed from sender and the other end of resistor to car body earth or engine.
Why is the CTS on my Jaguar not working?
The CTS, the harness wiring, and the harness connector, are all prone to failure. The CTS pin contacts, and the wiring harness contacts are also prone to failure due to corrosion.
What are the pins on a Jaguar XJ6?
Info provided by a series 3, 1986 Jaguar XJ6 owner, on April 2017, says the pins at the ECU are 13 and 17 (17 being ground). The above testing procedures require a fundamental knowledge of using either a digital readout/or analog meter, and setting the meter dials on the correct position.