Summary
The Jaguar XJ12 has 6 recalls spanning the 1975 to 1994 production run, with the most serious recent issue affecting 1994 models where a water-saturated hood liner can sag and press against the throttle linkage, preventing the throttle from returning and causing the engine to hold a high idle speed that raises the risk of a crash.
The 1980 model year has two related fuel system concerns. Misaligned fuel rail joints, combined with temperature cycling, can allow fuel to leak in the engine compartment, creating a fire risk. A separate filing from the same era covers fuel delivery system leakage more broadly, with the same consequence of a potential engine compartment fire. Going back to the 1981 model year, the fuel cut-off inertia switch had unauthorized changes made to its internal contacts during manufacturing, which can create high electrical resistance or an open circuit, cutting power to the fuel pump and stalling the engine. On the earliest production, 1975 models have an air injector pipe that can rub against the fuel rail until it wears through, allowing fuel to leak and increasing the risk of a fire under the hood.
