Engine wont rev higher than 3000 RPM , fitted new injector pump but still the same. please help

remove the pump again check for anything restricting the pumps inlet and make sure when the pump is put bacl that none of the pipes has a twist or bend that will restrict the flow of fuel

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

When you rev the engine and does not go over 3000 rpm is this in neutral or when driving in gear? Some vehicles have a rev limiter to not allow rpm over certain point when in neutral gear but is typically not limited when driving vehicle. This sounds like a very low rev limit but not abnormal if you can get engine to rev higher when driving. You call a drifter so truck must be non US market. Is this engine a 2.5 liter diesel 4 cylinder motor. Might just be your top rev and speed if this is the case.

Put fuel cleaner good one,did you change fuel filter.

Nothing, you have hit the rev limiter. The up and down is the computer controlling the rpm. If you drive it, it should rev past 3,000. The computer is designed to keep free wheeling rpm to that level. It will only allow a higher rpm if vehicle is in gear and moving with a load.

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Faulty fuel pump.Check your fuel pressure it should be 9-13 psi with engine running.

first try using redexe fuel additive (a full bottle to 5gallons)to clean injectors/fuel pump.
your car has a fuel cutoff valve,saves fuel when coasting(over 1800 revs,if you put car in nuetral going down hill you use fuel,so you are wasting fuel in neutral.but you have read the handbook cos it tells you in there.......

Has anyone checked your "rev limiter" ? It is a sensor that will not allow you to "rev" your engine past a cetain RPM.
It is usually only "on" when you are in PARK, but it is something to consider.
Please let me know what you find.

fuel pump pressure too low.causing lean mixture .

does it get worse as it runs? this would indicate exhaust problem. could be mass air flow