wheres this temp sensor at? one wire going to the fill tank, nothing to cross over there. looked through other forums, can't seem to find the info or a picture.

 

im guessing this one?

 

That's it!


DD

 

Idle Speed Adjustment



Cheers
DD

 

Does that coil tag say "DLB102"?

You should have a DLB198


Can't remember how significant the difference is. Will have to check and report back later


Cheers
DD

 

Funny you say that. I was thinking that something is wrong with the coil. Please let me know what you find out. You might have hit it on the head. The P.O. did that. Can we get Lucas coils? It just looks wrong with everything being original is what I'm thinking.

 

This is what I was looking for. I do think I will wait till you let me know about the coil before I start doing this job though. I might have to go out of town tomorrow for work so I might be a little delayed in responses, but I really do appreciate all the input and look forward to your responses. Doug, Your awesome. Pat on the back and a beer(or whatever) in your hand if we ever meet in person. Hell if you send me an adresse I will send you a gift at least.

 

Yep thats what it says

 

The '102' coil has a primary resistance of 1.5 ohm and '198' coil is 1.0 ohm. That might be enough difference to be significant....I'm just not sure.

The Series III service manual shows use of the higher resistance coils circa 1979-82 and lower resistance coils after that. I've never heard a conclusive reason why.

Anyhow, for years and years the rule of thumb for Ser III 4.2 cars is it's OK to use any 12v with about 1.0 ohm primary resistance.

If none of the other ideas pan out I'd try a different coil....with lower resistance. I've used both DLB198 and DLB170 Lucas coils on a Ser III 4.2 with good results. If yours has a ballast resistor....some do, some don't.... feel free to toss it in the trash. Most of us do.

Yes, you can still buy Lucas coils

Cheers
DD

 

I think that the number are so low that that difference is 50% or 150% depending on how you look at it. that is sugnificant(where is spell checker?) and I'm going to change it out. Where can I get a lucas coil at?
Doug, you go above and beyond. You don't have to and you still do. Your a good person. Props to you!

 

alright, The local crap store had a comparable 198 with 1 ohm resistance for 20 bucks. they couldnt find out if it had a resistor in it or not. I told them "I'm bringing it back either way, working or not" "all I'm doing is finding out if this is the problem". Cool they said. So how do I test if there is a resistor in it? I'm not familiar with this. In my expiriences there would be a resistor on the firewall somewhere and if you had a coil with a resistor in it them it would clash with the one on the firewall and would run like crap. I don't see one anywhere, except there is that "box" next to the distributor that I think has a resistor in it. Damn, I don't remember(I did open it up once, but dont remember what's in it)
Anyhow, wish me luck. Too dark now, so I'll do it in the morning and see how it goes.
Thanks again Doug!

 

When Jaguar used a resistor on these cars is was under a tin cover and attached directly to the "+" post of the coil. You can't miss it.


Cheers
DD

 

Thanks for the kind remarks. I'm glad to help when I can, as are many others. Plus, I'm just in love with the sound of my own voice, so to speak


Cheers
DD

 

Well you nailed it Doug. You attention to detail is awesome. Noticing the coil in the corner of the picture. Who would have thought? 150 miles today! the stalls are over!!! Woo Hoo!!!!!! I don't know what else to do besides say THANK YOU!!

 

Yeehaw! Paydirt. Glad you're sorted


Cheers
DD

 

Me Too.

 

Hidden some where in your car is a Lucas electrical box, marked "random interrupter". Its sole purpose is to randomly interrupt various electrical systems at the most inopportune times, thus driving the car owner bonkers. It has been rumored that Lucas has significant holdings in several mental institutions. To the best of my knowledge no one has ever been able to find the randomizer so they could disable it.
I had a 1986 XJ6 that did the same thing, it turned out to be a hairline crack in the intake manifold, that would open up as the engine heated up. I fixed it with liquid solder.

 

Never found mine for certain. But a strong candidate was a worn out ignition switch.
Ignition on power not always available. Replaced with very nice one from David Boger. unwanted on/off's gone.


I dissect the od ne. Loose and sloppy inside as well as congealed grease.
It is purring.


I went to market today. As I was unloading the cart contents n to the boot, an elderly couple dismounted from their "Asian beetle". She said,. you sure have a neat trunk!! And a glare at her male companion. Min has a lot of stuff ion it, but is stowed tidily.


Good night folks.


Carl

 

Hahaha! God bless Lucas and their electrical issues! I knew guys who were Cadillac techs back in the 80's and the random interruption circuit worked fantastic with them as well.