After about 9 months I finally got the interior done and installed this past Saturday. besides the interior I replaced the rubber seals on the front and back glass, and installed all LED lighting inside. Only thing, I took it out for a drive on Saturday, drove fine around this little town I live in, had it out for about 1.5 to 2 hrs. all fine, decided to treat my nephew to be the first to ride in it since the redo to make him feel good (he had heart surgery this yr, but doing fine) went out on one of the highways, did great, got it up to about 80 to 100, opps did I do that!?LOL, then on to another highway, slowed up going thru one town, got out of it, got back up to 60 then, oh crap,(not exactly what I said) RPMS and speed dropped. I was, now what, loss of power then shut down, did manage to get off the road. called the roadside asst, they send a truck, the car started after about 20 to 40 min. rain fine got home, pulled in front of garage, shut off. would not start again to get into the garage until it sat for another 30 or so minutes. The Jag ran great all last yr, I even made sure I stored it properly, and while in the garage started it up once in a while.


Any ideas on what it could be, my first thoughts are possible sludge in tank( guy I bought from had it sitting for sometime) but it did great last yr. so I am thinking maybe some crude on connections or am hoping.


Pictures are posted in my pic area, enjoy them for me it was a well worth and rewarding project.

 

My 82 did that.
Was the TPS!
Pete

 

That what I kind of thinking, thanks you re affirmed my thoughts

 

The 'could be' list is long!

What year and engine?

If it's an HE V12 with Lucas ignition I'd be suspicious of the ignition module. They typically fail when hot and then work again after a cool-down period. GM part # 10482820 or AC Delco D1906, about $50

Ignition coils often fail in the same manner.



Dirt/rust in the small sump tank is common...worth checking and cleaning on general principles even if it doesn't solve your problem.

Cheers
DD

 

JagZilla, my '84 with Lucas ignition, did that same thing several years ago. It was extremely frustrating, and the car left me stranded more than once in some very unsafe situations. I used to joke that I had pushed the car twice as far as I had ever driven it.

I first replaced the ignition module, then the fuel filter, and cleaned the surge/sump tank (nasty little things), then replaced/repaired/cleaned several other things in my quest to narrow down what it might be. None of those things worked, and the costs were quickly adding up.

It turned out to be that the ECU had gone bad, which is common with the 6CU ECUs. I replaced it with a 16CU from a later model (purchased used from Coventry West in Atlanta), and I never had that problem again. Found the solution in the FUEL PUMP section (page 253) of Kirby's book.

 

Thanks for all the info, mine is also a 84, and most things you listed is also what I thought, I was going to start at the fuel tank, sump and so fourth. Will be changing fuel filter(planned item to do as with cleaning the sump and changing the screen filter in that, I deffinatly will pick up a ECU, even if not needed it would be good to have an extra anyhow,


thanks for the tips,

 

Forgot to ask, I also have a 1984 HE, do you have the part number(s) for the 16


Thanks

 

Look for the following part numbers, as they are all 16CUs for US, catalyst equipped cars, and are a direct plug & play drop in for your car:
DAC 4118, DAC 4585, DAC 6335, and DAC 6337

 

Daverb, you HAVE to get some high resolution photos and post them here - that looks showroom new!

 

Thanks for the info, Everyone has been a great help. and to think I worked on a couple of Jags back when I was in trade school, only I went in the service afterwards and got a bit out of the car scene for sometime, after a few car shows with my son the spark ignited again

 

I bought it last July and the outside is just as I bought it, it only had 56500 miles on it. after parking it for the winter in November, I re-did the inside, re-colored the seats, and panel, re-covered the A< B< and C post as well as the under scuffs. re=covered the head liner, but should get a new headliner board (only one I found for the headboard is in England so save up for it)


Thanks for you kind comments and will try to get pics pposted here, been a while since I have done that but will give it a try

 

Giving a try to get some pics posted, hope I can figure it out. Amazing how you can be somewhat computer savvy yet have a time of it on the simple things LOL

 

Thanks, but bigger please! Any of the tech savvy guys here willing to have the pics emailed to you then post them full resolution?

Not every day you see a freshly restored interior like this.

 

daverb...am I to understand you did all this interior work yourself??? Somehow, that seems more daunting to me than working on the engine. I wouldn't even know how to start.

Just wondering (since you have some insight into interiors I suspect) what it would cost, roughly, to have an interior redone in this fashion? Yours looks great.

Thanks,

John
1987 XJ-S V12
64,000 miles

 

I will work on it for ya this weekend, maybe a bit tho, have family coming in but will get back asap

 

 

 

 

Very nice. Looks like you upgraded the weak yellow interior bulbs for some white LEDs too!

You know I've never seen an XJS with a cracked or warped dashboard...

 

and plan to replace the exterior with LEDs


Besides the white ones, I also replaced the dash, and console lights with LEDs,