Jaguar XJ Range Case Studies
Vehicle had a large oil leak to rear. Inspection revealed diff pinion oil seal failure.
A replacement seal and flange was fitted and the diff pinion reload was re-set.
Vehicle presented with severe mis-fire.
Traced fault to Bank B top timing chain tensioner failure which caused valve timing to be out of synch.
Stripped down engine and replaced all timing chain tensioners, guides and chains.
Air suspension fault logged on message centre.
Carried out fault code read with diagnostic tools and traced fault to near side rear air suspension strut.
Strut replaced, re-set air suspension and cleared fault codes.
Vehicle presented with ineffective heating system despite engine running at correct temperature.
Checked operation of auxiliary heater pump and traced fault to seized motor.
Drained coolant system and replaced heater pump.
Excessive brake judder.
Brake discs were checked for excessive disc run out.
Discs were found to be warped.
New brake discs & pads were fitted.