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Resistor pack connector actually had one pin, that clearly was corrected. All eight pins are now cleaned as well as the pack itself. Connector assembled with eight small drops of Vaseline oil.
Engine was not really cold, but it started well. Idle is improved and unfortunately also higher. AAV seems not to close properly, as I was unable to reduce idle speed.
Anyway, engine now runs better than ever in my ownership. Happy days.
Seems like corroded/dirty resistor pack pins are coming up in conversation more and more often. Cleaning them should probably be added to the list of "XJS usual faults and fixes" along with the old standards: crumbly throttle bushings, seized distributor advance mechanisms, dreaded shielded wire, etc.
Seems like corroded/dirty resistor pack pins are coming up in conversation more and more often. Cleaning them should probably be added to the list of "XJS usual faults and fixes" along with the old standards: crumbly throttle bushings, seized distributor advance mechanisms, dreaded shielded wire, etc.
Cheers
DD
Are these replaceable? I can't seem to find any online, I have 3 obviously used ones in a box here.
Are these replaceable? I can't seem to find any online, I have 3 obviously used ones in a box here.
There are no moving parts in them or chips to go wrong, and they can be opened up easily to be cleaned/checked. As far as I can see there is no reason a different connector could not be fitted, with a little fettling and decent soldering skills.
Greg
Seems like corroded/dirty resistor pack pins are coming up in conversation more and more often. Cleaning them should probably be added to the list of "XJS usual faults and fixes" along with the old standards: crumbly throttle bushings, seized distributor advance mechanisms, dreaded shielded wire, etc
WE do have a sticky on this topic (very well written!), but it is under the heading "VIN related tools" and the link reads such that what it is about is a mystery. Perhaps (Mr Super Mod) re-doing the titles in this section would be a good plan?
Greg
Last edited by Greg in France; 06-11-2017 at 12:11 AM.
Brass bushing mounted at B-bank butterfly axle and pushrod adjusted.
Car drives well, but idle is too high, around 1050 RPM warm in N and of course hunting while cold.
I guess first step in AAV fault finding is to block the hole feeding the AAV to see if idle still is high ?
The 3 Torx screws holding the end cover on the inlet manifold had a funny drive size in my opinion. T30 did undo and tighten them, but felt like a too loose fit. T40 is a lot larger. I didn't try it, but I don't think a T40 bolt can be turned by a T30 tool. Did Jaguar invent their own sizes ?
The 3 Torx screws holding the end cover on the inlet manifold had a funny drive size in my opinion. T30 did undo and tighten them, but felt like a too loose fit. T40 is a lot larger. I didn't try it, but I don't think a T40 bolt can be turned by a T30 tool. Did Jaguar invent their own sizes ?
No, standard sized Torx will fit. If you get stuck I will check the correct size.
Greg
Ignition amplifier can do all sorts of gremlin behavior if overheated over time.
Don't forget to always coat the top of the ignition amplifier (get a new gm quality one) with a layer of dialectic grease.
Yes remove condenser.
Check the wires for cracks and check the connectors for corrosion, damage etc.
If you are handy rebuild the thing while you are in there.
There are members who have completely rebuilt their entire amplifier and now have the performance and piece of mind a Jag owner deserves.
Thanks. The car has been running quite well since I did the resistor connoctors, but I still need to use right foot a bit at cold start.
I have a to do list for the winter, and I better add amplifier rebuild to that
I would be curious to know your engine vacuum reading at idle. I am fighting a similar problem. Although I have a 92 with Marelli ignition. I have been hunting for vacuum leaks and just can't find any. Im planning to check the timing in case the crank pulls slipped. She's laid up for winter now but I will resume the hunt in a few months.