Its most likely the coils and spark plugs, sometimes caused by oil leaking from the valve cover gasket. The coils deteriorate over time from engine heat and need to be replaced at 90-100k
Local garages don't have the Jaguar diagnostics terminal and are unable to do more than find basic error codes with a reader. Its important to get this fixed because it's causing damage to your caltalytic converters. They are expensive.
A friend of mine had the same problem, and he found out that the problem was caused by trying to cut fuel costs by using regular unleaded gasoline instead of the required Super or Premium grade that is supposed to be used in the Jag. Once he filled it up again using Premium Unleaded the problem disappeared.
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1998 Jaguar XJ8 won't rev over 3000 rpm ... Wont go beyong 3000 Revs s type 2001, wont go beyond 3000 Revs and it' in limp ... Question about 2002 X-Type ... My jaguar xjr8 year 2000 battery went dead started car went for short drive back ...
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1998 Jaguar XJ8 won't rev over 3000 rpm ... engine cuts out and shudders at 3000 rpm won't accelerateobd code p0332 2002 jaguar x type 3.0 l P0332 - Knock ... Car is boging out in park and will not go over ... driving, don't worry about it.
Possible restricted/plugged catalytic converter causing exhaust back pressure to be too high. You will need a back pressure test performed to see if this is the problem. You can also remove the front oxygen sensor and try revving the motor to see if the exhaust leak created with the sensor removed will lower the back pressure and allow the engine to rev higher
Lots of things can cause this. Most likely it is due to an engine vaccumn leak from any number of gaskets. Your local dealer or mechanic can check for any faults stored in the car's computer (ECM). This will lead them to the cause of the restricted perfomance light.
I had the same problem. Restricted performance and running rough at 3000 RPM. I have an OBDII code reader and found that the problem was in the air mass flow sensor, which is just after the air filter. I pulled this out and found it was dirty and had butterfly wings in it. The last shop where I had the oil changed replaced the filter for me but put in the wrong size. Close but no cigar. Bought some *** Flow Sensor cleaner at auto store and fixed the problem. Get an OBDII reader with the ability to erase the codes. Comes in real handy.
Unfortunately many things can cause this. It may just be a faulty sensor or wiring plug/socket. The jaguar engine has many sensors all of which can cause this message. Best get the cars fault register read at a garage - this should show you where the problem may lay. The fact that the fault can disappear for long periods would indicate its something minor at the moment. for peace of mind get it checked.