1988 Jaguar XJ6

88DALEJE88

MEMBER
1988 JAGUAR XJ6

Engine Mechanical problem
1988 Jaguar XJ6 6 cyl Two Wheel Drive Automatic

I have a 1988 jag xj6 the car ran good then 1 day it just shut off while I was driving it I let it sit for about 2 hours then it started back it ran for about a half an hour then died again the car gave me no signs or anything taht something was wrong it didnt even hessitate or anything just turned of it was like someone had shut the key switch off any help I can get to try and figure this out would be gratly appreciated thank you

2 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there,

You will have to try and determine if it is fuel or spark that is failing. It will be easer to test for spark when it fails, if you can do this and re post your findings we can work on the cause.

Mark (mhpautos)

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Thursday, June 12th, 2008 AT 5:44 PM

JAMES W.

MECHANIC
2,394 POSTS

OLD mechanic's rule; if it has spark and fuel to the cylinders, it will run. Maybe not well, but it will run. Sounds like a heat (electronic) breakdown.
Have someone help you for the following tests. The stall has to exist at this time. I check for spark by placing a standard phillips head screwdriver in any plug wire. Lay the screwdrive on the engine so the metal shaft is NOT touching the motor. About 1/4 in. Away. Have someone crank the engine. You should see spark jump to the motor. If so, ignition is good. I not it may be the amplifier, coil (not likely)or ECM. Next, REINSTALL THE PLUG WIRE, you don't want a fire for the next test. Remove the fuel line from the fuel rail, on the back close to the firewall, and point into a coffee can. Carefully crank the motor. If you "don't" have fuel spray it's ether fuel pump, f pump relay or ECM. There is no way to test the injector sys. Without special tools See Haynes book #49011 for more details. Good luck. Jim at; jamesweizel@yahoo. Com

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Sunday, September 28th, 2008 AT 12:05 PM