Question about 1994 Jaguar XJ6

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1998 jaguar xj8 fan is on - 1994 Jaguar XJ6

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I have a 1997 XJ6 that had the problem with the cooling fans running constantly. I had to remove the fuse to turn it off to keep the battery from running down. It turned out my solution was that an A/C sensor on the firewall (there are two) was bad. When I replaced it the problem went away.

Posted on Dec 02, 2008

6 Suggested Answers

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SOURCE: 1998 jaguar xj8 overheating.

The early XJ8s were designed to operate as you describe, only kicking the fans in with the AC which is fine when the cars warming up (in fact it helps the car warm up faster & use less fuel), however, Jaguar realised in some climates this was causing overheating, later ones (99my on) operate constantly with the ignition on at slow speed & speed up if it detects it needs to.

This is a complex 2 relay system with alot of wiring that goes into the ECU & cant easily be retrofitted to your one.

I`d advise you to take the car to a good auto electrician & ask him to fit a manual switch on the dash with a relay to the fans so you can turn it on manually when its warmed up (if he can fit a slow speed relay with a resistor as well as a full power one, all the better, as you dont want to over cool either).

I`d also advise you to get the thermostat changed every year & the water pump to be upgraded to the current spec one, as these are both known issues that occur & also cause overheating.

Best of luck!

Posted on Dec 13, 2008

  • 2920 Answers

SOURCE: 1998 xj8 jaguar

have someone pull the release while you lift upon the side that wont open. you should be able to get it to unlatch that way

Posted on Jan 22, 2009

  • 3 Answers

SOURCE: 1998 jaguar xj8 timing chain

http://jeg.serverhouse.com/Jag_docs/Timingchain.pdf

Here it will show how to do the job step by step.

dssossg@aol.com

Posted on May 12, 2009

soultrip
  • 103 Answers

SOURCE: Need a wiring Diagram for 1998 Jaguar XJ8 Vanden

See here.

Posted on Sep 29, 2009

  • 82 Answers

SOURCE: the restricted performance light keeps coming on

could be numerous causes, it is logging a code when the light comes on, have the codes pulled to direct you in the correct repair

Posted on Jan 20, 2010

  • 1757 Answers

SOURCE: diagram for a 1998 jaguar xj8 serpentine belt

My sincere apologies for the delayed response.
I am personally going back to answer your unanswered questions.

I do not know if you still need this information, but I am going ahead and answering it anyway. You may want to Print the Diagrams for future use.

CLICK
on the following LINK. It has the Belt Diagrams you will need.
If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Again my apologies...
Thanks!

http://www.2carpros.com/car_repair_information/year/1998/make/jaguar/model/xj8/1998_jaguar_xj8_drive_belt_routing_diagram.htm

Posted on Mar 05, 2010

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1 Answer

1998 jaguar xj8 cooling fan not working, cooling fan not coming on causing jag to run hot after idling approx 30 min


Delbert, Not real familiar with jag. Check all cooling system fan fuses and relays. Could be a bad fan temp. sensor. Have a good Tech. scan for codes, diagnose and estimate repair. Check the attached links,instruction and guides, 2nd link has some good info. Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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Very noisy squeky fron suspension on jaguar xj8


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Sep 14, 2009 | 1998 Jaguar XJ8L

1 Answer

1998 jaguar xj8 overheating.


The early XJ8s were designed to operate as you describe, only kicking the fans in with the AC which is fine when the cars warming up (in fact it helps the car warm up faster & use less fuel), however, Jaguar realised in some climates this was causing overheating, later ones (99my on) operate constantly with the ignition on at slow speed & speed up if it detects it needs to.

This is a complex 2 relay system with alot of wiring that goes into the ECU & cant easily be retrofitted to your one.

I`d advise you to take the car to a good auto electrician & ask him to fit a manual switch on the dash with a relay to the fans so you can turn it on manually when its warmed up (if he can fit a slow speed relay with a resistor as well as a full power one, all the better, as you dont want to over cool either).

I`d also advise you to get the thermostat changed every year & the water pump to be upgraded to the current spec one, as these are both known issues that occur & also cause overheating.

Best of luck!

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