What as awesome classic sports car. This thing was a pleasure to work on. We got called out to have a look at a few faults on this V12 Jaguar, the main one being the cruise control not working.
This system uses an electronic module to control the vacuum bellows that in turn, move the throttle cable. An excellent system for its day, with many safety checks in place. This particular one had quite a few faults, which had probably started with one, then cascaded with time to the rest.
First of all, the wiring connections to the solenoids in the bellows had to be reconnected properly (obviously a result of a previous attempt at fixing the fault), which led us to testing the vacuum solenoids. These weren’t working initially, but after a decent amount of WD-40 they soon freed up.
Next, we moved on to the backup safety brake switch, which needed to be replaced. After this, the car was given a thorough road test, and all was back to proper working order. These machines are certainly a pleasure to work on and I’m always in constant awe of the design and engineering that went into creating them.
If you need any work done on your project – get touch in here.