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Hi. I have a 2002 LR Disco 2 which has been idling rough and hesitating while driving. Seems like its lost power. This all seemed to happen overnight.
First replaced the spark wires - no change Recently went and got both the CAT'S changed out as they were rattling - both were completely melted out.
Right after changed out both the ignition coils. Now have changed out all four o2 sensors and the MAF sensor.
Still seems to be idling rough and hesitating while driving.
No coolant being lost … had the head gasket done a year ago.
Any help would be appreciative.....Thanks!
This is my second Disco. First one I had for 15 years with little problems but this one I cant seem to be able to fix.
 

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Two thoughts. The wires are really hard to get popped back onto the coils; are you sure they are properly seated on the coils? And the standard picture showing which wires go on which coil receptor is reversed (it shows a view looking forward from the front seat instead of looking back from the radiator toward the windshield). So it is easy to get the wires crossed up.

Are you sure the plugs are OK?
 
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