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Moff_man nah i had the geabox serviced by a transmission specialists and now appears to be misfiring badly. i have the engine light staying on all the time but i have done the dignostic check and comes up with the code 12(all good it seems). So perhaps it could be the spark plugs or maybe a bung leeds? Also i check the spark coming from all the leeds and they all have really good spark.! So im not sure what to check next if i dont have a fault come up on the computer.shuldnt have anything to do with a auto service. did you do the service?