The 1990 Jaguar XJS has two recalls of equal severity: a cruise control system that may fail to disengage, leaving the driver unable to reduce speed without manually braking or shifting, and a fuel tank that can develop a leak and catch fire.
The cruise control issue stems from dirt contaminating the actuator valves, which can cause the system to hold throttle even when the driver tries to cancel it. On the fuel side, excessive vapor pressure building inside the tank over time can weaken the tank structure until it leaks, creating a fire risk if that fuel contacts an ignition source.
At a glance
What can fail
Fuel vapor pressure inside the tank can build up excessively. Over time, this pressure can weaken the fuel tank structure.
What the fix does
Install a revised fuel purge system that prevents excess vapor pressure from building up in the tank.
Summarized — see the official notice for exact wording, dates, and contacts.
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At a glance
What can fail
Dirt can get inside the electronically controlled valves in the cruise control actuator, causing them to stop working properly.
What the fix does
Replace the cruise control actuator and install an additional vacuum dump valve to prevent dirt from entering.
Summarized — see the official notice for exact wording, dates, and contacts.
