OK you Tech types...which Ford/Lincoln ignition coils fit the 98 XK8 4.0??... I would love to eventualy replace my coil packs for PM, but the $100 dollar a pop Jag coils are daunting...
Thankyou for the help
Fred

 

Or even the '02 4.0L car. Since the Lincoln LS used the same engine in '02, are the coil packs usable?

 

In reviewing old threads I see no one answered this. I was wondering the same thing (for future reference) i.e. will Ford or Lincoln coils exchange for a Jag and if anyone knows what is the year and model and engine of Ford/Lincoln was used.

 

A quick search of an auto parts site indicates that the Lincoln LS coil packs are the two conductor type vs the Jaguar 4.0L using the 4 conductor. So that doesn't work.

Using another parts site and searching on the part number produced only '99 - '02 Jaguar applications. Guess we are stuck but the Rock Auto site did have them for $66.

 

AJV8s were introduced with 2-pin coils and separate ignition control modules, then upgraded to 4-pin coils and no separate control modules. The split occurred appoximately around the AJ26 to AJ27 shift, but I am unsure if it changed exactly at that time because there was a 2000 MY engine management upgrade. In Fred's car (98) it is surely 2-pin coils if the engine is original. I don't know if the Lincoln/T-Bird used 2- pin or 4, or both with a changeover.

 

From my understanding it was when the 4.2s came out the coil packs were changed to the 4 pin digital as apposed to the 4.0 2 pin analogue.

 

I have 4-pins on my 02 4.0L with no ignition control modules with a build date of 11-01

 

Me too.

The on-line application chart would indicate, as steve11 says, somewhere around the AJ26/27 change over. Lincoln LS were 2 pin through '02.

 

I have never come across a 4pin 4.0........You learn new things every day

 

My 2002 XKR has 4-wire coils. The wire colors are Black, Yellow, Blue and Red with tracer colors too.

 

When I changed the Secondary Tensioners on my Car, I noted the 4 pin Coil Connectors. The 2000 MY Electrical Diagram Set shows 4 Pin Coils for all Engine Configurations.

 

1997-1998 are 2-pin coils for sure(shared with the XJ of similar years). When I was doing research to replace two of my coils, I noticed that it changed to 4-pin in 1999.

Now, the question is.. Are they interchangable with lincoln LS coils?? I would LOVE to replace the other 6 used ones...

 

As noted above, the Lincoln LS used the 2 pin coils at least through '02. Rock Auto's $66 for the correct 4 pin ones puts the price down into the non-Jaguar world.

 

hey i'll chime in.when i got my 99 xk8,it ran good for 2 blocks.drove it home and got my son to look it over.it turned out to be a coil.ordered one from local parts store.took 3 days,well it was listed as a 2 prong and i needed a 4 prong.so the change is somewhere in the 99 model year. had to be sent back for correct one..steven

 

That's pretty much the AJ26/AJ27 split.

 

AJ26 has 2 pin connector (Denso)
AJ27 has 4 pin connector (Denso)
AJ28 has 2 pin connector (Ford)

Here is a pic of the AJ26 and the AJ28 coils
I looked for a coil AJ27 but could not find one laying around in the shop.

Ford and Denso can not be interchanged.

bob gauff

 

I have been doing Jaguar XKs for about 6 years now and I have never seen the coil pack you are showing on the left, which throws back to my statement of "I have never come across a 4pin 4.0........"
Even my own late MY2000 XKR has 2 pin, I have worked on 2002 MY XKs with only 2 pin, all I can say is this must be peculiar to the US, as far as I am concerned 4 pin didn't come in until the 4.2, this is why if you do a 4.0 to a 4.2 engine swap you have to use your old electrics/ancillaries and coil packs.....Curious..

 

@xkracer
Interesting, as far as I know the 4 pin came with the AJ27 engine, so from 1999 for the NA cars and 2000 for the SC cars (my late my2000 has 4 pins). I just double checked with the JTIS electrical diagrams, and that shows the same. Could this be just a british thing ???

The AJ33/34 (so 4.2 engine) has also 4 pin, but is different again (digital iirc), so that is why you need to reuse your 4 pin from the AJ27.

Have not yet seen an AJ28 engine, so can't comment on those coils.

 

I spose the UK could be the peculiar ones

It is rather strange I must admit, perhaps I have just had a lot of strange XKs to deal with (nothing unusual there).

But I am adamant I have not come across a 4pin 4.0ltr

 

The one on the left is of the 4.0 S-type jag. Basically the same engines, with cheaper parts. I wish there was a cost effective way of replacing all 8 coils on my XK8. At current prices, I'm looking at close to $1,000!.. Crazy..