land rover range rover 4.0 se with misfire?

You may need to check that you have the correct 'Champion 'plugs at the proper gap. Also check and replace your air pollen filters located below the windshield. If this doesn't cure, than you have burned up the main fuse box located on the inner fender. This occurs when pollen air filter have been plugged and the interior fans are ran on high. The air flow restriction creates electrical resistance as the motor cannot turn at the requested speed, resulting in electrical feedback to the fusebox.

Plugs $189 each x8
Pollen filters $18 each x2
Fuse Box $250-300

If I can be of any assistance please write or shop at 'Green Dog Rover' on ebay
or
dynesr@gmail.com

The Green Dog
September 2008

somehow my answer was clipped
to continue ...
Engine Coolant Temperature sensor (not dashboard gauge)
Intake Air Temperature sensor
Fuel Temperature sensor
Camshaft sensor

MannyG
March 2008

Check air cleaner - replace if needed.

Get readings of engine sensors and of the fault codes as well.
Take special notice of the ff sensor readings and make sure they are correct :

O2 Sensors

MannyG
March 2008