The cruise control on my '92 XJS V-12 coupe is intermittent. Specifically, it sometimes will not actuate when the console speed control switch is pushed to start it. When it works it works beautifully, including the pushbutton on the end of the signal stalk. But more & more, it does not engage when the console switch is pushed. I have replaced the fuse under the glovebox and have replaced the console switch. The cruise control vacumn line appears to be fine on top of the engine. Any ideas? - Rick

Submitted by dougdwyer@adel… on Fri, 07/21/2006 - 21:07

Sorry, my bad.

Try the link below, it has some good info....but it won't apply if yours has "Kiekert" cruise control (I don't think it will, as I think that chnage was made later than '92 but am not quite sure)

Doug Dwyer
Longview Washington USA
1995 XJR
1988 XJS

Submitted by dougdwyer@adel… on Fri, 07/21/2006 - 09:39

Might as well start with something easy....

Remove the console switch and, if you feel confident, disassemble it to clean the contacts

If not, get some aerosol contact cleaner and using the red tube/nozzle, try to inject as much spray as possible into the switch, via any small openeings you can find on the back side. Some of the spray will eventually reach the inner contacts. Make sure to protect the part of the switch that is exposed as some contact cleaners will discolor the plastic

On reassembly tighten the connectors a bit for a good grip

Doug Dwyer
Longview Washington USA
1995 XJR
1988 XJS