Question about 2001 Jaguar XJ8

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What causes the radiator fan not to come on in a jaguar 1998 xj8.where are the relays located for this problems

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  • rmk2499 Oct 24, 2008

    John, Did you ever find out the solution?

  • Anonymous Feb 05, 2009

    engine overheating due to radiator cooling fans not switching on, what are the possible faults and the solutions????

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The relay is under theleft side of the front wing i think its green with 5 wires     

Posted on Jan 22, 2009

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The restricted performance light keeps coming on usually when the engine gets warm ? this is a jaguar xj8 3.2 sport 1998 model


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Jan 17, 2010 | 2001 Jaguar XJ8

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Overheating


Your overheating problems can have several possible causes.
1) Airlock in heating system - solution - bleed air from cooling system.
2) Radiator blocked - solution - drain and flush radiator
3) Failed waterpump - solution - fit new waterpump
4) Engine thermostat stuck in closed position - solution - fit new thermostat
5) Electric cooling fan (if fitted) failing to operate - solution - check fan, fan operating switch, all wiring and connectors
6) Not enough coolant in system - solution - check and top up to required level. Also check all hoses for sign of leakage.
7) Faulty temperature gauge giving incorrect reading.

Jun 21, 2009 | 2001 Jaguar XJ8

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Stater for a jaguar xj8l 1998


starters is mounted on the bottom of engine. its a little long electric motor with a little drive gear that mesh to flywheel to turn engine over to crank.

Apr 29, 2009 | 1998 Jaguar XJ8L

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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!

Aug 30, 2008 | 2006 Jaguar XJ8

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