I have a 300m 2002 it's in park and doesn't

If your standing still in park it wont rev past 3000 rpm as its got a limiter on it And only revs past 3000 rpm in drive on the move.

In park, this could be normal. ECU does this. around 2800 to 3500 RPMs. If driving, have the codes read. No codes , could be a clogged fuel filter, bad fuel pump(have the pressure checked), or clogged catalytic converter/s. With no codes, something is restricted..

Jaguar wont rev 3000 rpm Questions & Answers - Fixya

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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 ...

Jaguar engine cuts 3000 rpm Questions & Answers - Fixya

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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.

Rev Won't go up

www.jaguarforum.com/showthread.php?t=14662

The vehicle has a rev limiter. Will it rev over 3500 when you drive it? If no, then I would guess that the exhaust might be partially restricted. But the engine computer won't allow you to free rev the engine that high in park and neutral.

It wont rev past 3500 in driving?
The governer on these is set to NOT allow a higher rev when car is stopped and not in gear.
Try to change oil viscosity or filter manufacturer.Some filter manufactures put in a bypass valve that kicks in too early.

The 300M is equiped with a rev-limiter. The technology is designed to protect the engine. It keeps you from blowing it up when it has no load on it...If it is driving and shifting ok, and you have no check engine light on...there is nothing wrong.
Why would want to rev the engine past 4000 rpm in neutral anyway? Max torque comes in around 3950 RPM...
If you keep reving it up in neutral you might throw the computer in to LIMP mode, then you wont go no where.
Hope this answers your question...

remove the aircleaner intake hose and, check the intake air control flap for free movement

rpm limit ... built in to unit so you
don't blow the engine.

That is normal.
If you rev it in park it will not rev over 3500 rpm before it hits the rev limiter.

Try the Transmission fluid. If the level is low then the hydraulic vacuum type operation is ineffective