Kirby Palm's Jaguar XJ-S Help Book

 

What are the modules called that are on the radiator that controls each bank of the engine ?

 

On the radiator upper mounting panel....the flat, horizontal panel right above the radiator.

The illustration shows what they look like. Item #2

https://www.jaguarclassicparts.com/u...dule-5-3-litre

Cheers
DD

 

Thanks Doug, I'm going to replace both modules,both coils, distributor cap and rotor. 27 years old I'm just going to replace all of it.
EDIT- Spoke to soon $234.00 each modules NO WAY.

 

The Marelli modules are Bosch 0 227 100 124, if they are working do not replace them.

 

Just read through the whole thread.

The problem you had with smoke is unlikely to be ignition related. If I were you I would drop the exhaust and check the catalytic converter in the down pipes, I have heard these can collapse, I have not seen them personally as we do not have them here in Aus.

You need to diagnose and fix whatever caused the smoke before moving onto repairing anything else.

 

This sounds quite similar to when I had a starter solenoid contact weld itself shut and the starter wouldn't disengage. Full current through the battery cables to the starter got things hot very quickly.

 

i once had a catalytic converter get bogged down and the car wouldn't go over 30. Pulled it off and put in a straight pipe, tried it and sure enough it was the old cat that was clogged and causing my problem.

 

Sorry I haven't been back here sooner to reply. Excessive oil (or unburned fuel) will cause the catalytist to overheat. Ive seen them glow white if fed enough. This is what happens in a Marelli fire. The catalyst inside will melt and plug the exhaust. This is pretty common on many cars. If not completely plugged people may continue driving them unaware. Drop the exhaust and take a look. There are two locations of catalyst on the jags.One is in the exhaust manifold down pipes inlets. The other is the cat just downstream of the manifold.

 

I have not touched it since last Saturday 19,Aug.
The motor did not run long enough,(maybe 30 seconds) for the engine to get even warm, I touched the motor different locations and was cold.
Passenger bank must be dead and fuel dumped into converter.
Will deal with it later and then SELL the pos. Like owning a Harley.

 

@macdoesit - man, do I feel your frustration. This car sounds like my first XJS. What a learning opportunity that was

Like @warrjon I'm a bit late to the party but I've read the entire thread. May not be your issue, but I had similar symptoms once, and it turned out to be a failed silicone hose that connected 2 pipes of the air injection system.

I'll describe best I can but it's been a while. If you take your thumb and forefinger to make an "okay" sign, the diameter was probably a bit smaller than that. High temp silicone hose maybe 4"?

If you look at your firewall, right up next to the passenger compartment slightly to the passengers side, is a flexible silicone hose that connects 2 metal pipes that I believe inject air into the cats / exhaust.

I'm currently without access to a Jag to take pics for you.

Loads of us here understand your frustration. And many of us wouldn't be here without the forum's support. Lots of happy stories to be had from folks who were systematic in resolving their issues.

It's a nice looking car. Never had a convertible, might be tempted if you decide to go that route.

*FAIR WARNING*

Might be lumped with equal or greater Germanic V12

 

I'm a little late to the party. When you came down the ramps I'm assuming it was at a strong angle. This could have poured oil from the puddle that can form under a leaking oil pressure sender. Runs down trans to drip all over the cats. These are great at smoking, lots of hot surface area and they're the first things to get hot. Probably nothing to do with your issue, the bogging motor.

Check your fuel supply, TPS, CTS and ECU vacuum.

Wild guess, not knowing your vehicle, fuel restriction in tank or sump from rust relocated by the recent steep incline.

 

It sat at angle on ramps 3 days,backed it off ramps drove maybe 30 miles or so and no problems, when i got back home drove back on ramps, replaced clamp on bottom rad hose, backed down ramps a few hours later and smoke coming out between firewall and motor and motor bogged down like the brake was on.

 

This is why I put new thread asking about starting fluid.

 

I will report back when I get the problem fixed.Thanks for all the info.