GM TH400, generally bulletproof
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Owned a Jaguar XJ-S? Share your experience with this issue. What worked, what didn't, costs, tips. Help the community.
Submit an update1975-1996 / Coupe / Convertible / United Kingdom
Owned a Jaguar XJ-S? Share your experience with this issue. What worked, what didn't, costs, tips. Help the community.
Submit an updateHarsh shifting, slipping, delayed engagement, overheating. The BW66 is simply not strong enough for sustained V12 power.
Engine overheats, temperature gauge climbs into the red, coolant boils over. In severe cases, head gaskets fail and coolant enters the oil.
Coolant appears around the head gasket line (external weep), or coolant contaminates the oil (internal failure, mayonnaise under the filler cap, white exhaust smoke).
Misfiring, rough idle, hard starting, power loss, sometimes total ignition failure.
Similar symptoms to Lucas, misfiring, rough running, but less frequent and usually easier to diagnose.
Rough idle, hesitation, poor fuel economy (even worse than usual), hard starting, stalling.