XJ6 & XJ12 Series I, II & III 1968-1992

new to the site, new to the cars, have some Q's

 
  #3  
Old 06-04-2007, 12:01 PM
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Default RE: new to the site, new to the cars, have some Q's

I'll post a few links here and you can study them. You have a Delanair MK-3 "climate system", which is different from an A/C system in that the compressor comes on all the time, (even in winter when using the heater), to de-humidify the air.

1) here's the first link about the Blower problem: It has to do with the "Darlington Transistor" and the location where it is, most do-it-yourselfers change the location of the circuit boardafter replacing the transistor.

http://www.jag-lovers.org/xj-s/book/acblower.htm


2) here's the second link, more detail about the MK-2 system (up to 1987) and the MK-3 (from 1988).

http://www.jag-lovers.com/books/xj-s/14-Aircon.html

3) there's a guy who hand-manufactures an improved circuit board with a new transistor, and if you want to go that route, I'll send you his e-mail and you take it from there.

good luck!
Jose
 
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Old 06-04-2007, 05:46 PM
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Default RE: new to the site, new to the cars, have some Q's

If it's a 1990 wouldn't it be an XJ40? Is this a Canadian production Series 3? What engine do you have? Just want to make sure we give you the correct answers.
 
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Old 06-04-2007, 06:11 PM
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Default RE: new to the site, new to the cars, have some Q's

it must be an XJ-40 because Series 3 XJ don't have any "information button" likeXJ-40s do.

as to Washer fluid, try agua, nothing but. Those "blue" windshield water fluids cause problems, like staining the paintwork, like clogging the check valves and the washer motor. I always use agua and never have any problems.

also, he describes thefan/blowercoming on by itself after he turns off the ignition, that's typical XJ-40 Delanair MK-3,not Series 3 XJ with the Delanair MK-2. (Ken, aren't you happy we have Series 3 XJ ??)

Jose
 
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Old 06-04-2007, 08:17 PM
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Default RE: new to the site, new to the cars, have some Q's

yes, you have a XJ-40 with a 4.0 liter engine. Read the links above - you'll get a lot of info. there.
Jose
 
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Old 06-05-2007, 08:28 PM
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Default RE: new to the site, new to the cars, have some Q's

I'm not familiar with that year's alternator - but Ken is. he sellsthousands of them.

modern alternators have the voltage regulator usually built-in. I would take it to a specializedalternator shop and get a second opinion. Anytime you replace an alternator, you need to replace the battery too. why?

go to this website and read:

http://www.starautoelectric.com

 
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Old 06-06-2007, 08:28 AM
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Default RE: new to the site, new to the cars, have some Q's

Your car may also have a dump module causing your headache. I don't know how to test these. I will see what I can found out and get back to you.
 
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Old 06-06-2007, 03:20 PM
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Default RE: new to the site, new to the cars, have some Q's

The short answer is overvoltage protection. It helps the stablize the charge from the alternator to a constant over the system. It gets in to all sorts of bus voltage that is much lower than the 12 volts in an automotive charging system. With the advent of solid state electronics in cars this becomes far more important. It can wig-out (not a techincal term) and drag the entire system down.
 
  #14  
Old 06-07-2007, 09:52 AM
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Default RE: new to the site, new to the cars, have some Q's

I don't know if the can be refurbed or not. I have not heard of any rebuilt units.
 
  #15  
Old 06-08-2007, 10:05 PM
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Default RE: new to the site, new to the cars, have some Q's

there are salvage yards that will have these cars, or any other year. Another place to check is on eBay. But you'll need to check if that part is exactly the problem - don't replace parts without being certain they are bad.

To answer your question about repairing parts like Relays, Modules, and things like that, I would tell you go ahead and try, what have you got to lose?

But again, are you absolutely sure the part is bad ? In my two old Jags, (1965 and 1984) all relays, modules and such are openable, serviceable,and repairable. Yes sometimes it takes a geek to repair them. Butif they can repair them, all the power to them.
 
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Old 06-18-2007, 12:40 PM
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Default RE: new to the site, new to the cars, have some Q's

the only body kits I know of for the Series 3 XJ-6 are made in the UK, as shown in the pictures below.
The owner of the car below is Steve Fuller - contact him at http://www.skjagtech.co.uk and maybe he can find you a kit.
 
 
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