Question about 1988 Jaguar XJ6

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1988 Jaguar xj6

My jaguar starts up fine the first time around and drives well, but when you try to turn it on the second time it won't unless I push the gas pedal down. for example when I go to work it turns on fine and drives good, when I come out of work it still turns on properly. Is the in between turn on and turn off that really gets to me.

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Hi Billy

You did not specify if it was a 2.9 or a 3.6 ? I hope it´s the latter !

Going by your brief report on your Jags symptoms, the plan of action I recommend are as follows.

First check the oil filler cap has a rubber ring, and has not fallen off, this will give you an air leak, and it happens a lot.
Check the big hose from the flow meter to inlet manifold, is not split or insecure below.
This too will draw in air, and throw a spanner in the works.

Remove and inspect and clean the distributor cap and rotor, for cracks or tracking marks, and clean the terminals, a spray with WD 4O before you put them back on.

Give the crank sensor a clean, and check for any metal filings on the magnetic end of it.
It´s situated 1O O'clock, at the front crank pulley.

I recommend you renew the coolant temperature sensor, which is located at the rear of the thermostat housing on the L/H front of the engine.

As they are common to give problems, and work along with the supplementary air valve, and the idle speed valve, forming the equivalent of an automatic choke.
This would tie in with your problem.
To renew the sensor, remove coolant cap and refit, and disconnect the 2 pin electrical connection, and unscrew, and fit the new sensor.

Carry out these tasks, and give me feed back as to how you got on.

Good Luck !

P.S. Don´t forget to give me a FixYa rating, please !


Posted on Jan 23, 2009

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