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renault laguna misfire fault code 45?

my 1995 2lt 8valve has started to missfire it will drve then missfire then seams to clear itself ive changed the leads dizzy cap plugs swapped the coil pack my code reader says rpm signal fault so i changed the crank sensor still the same you can hold it at 2000rpm the it starts dropping to 1000 and back up

disparing renault owner
January 2009

Renault Laguna Vehicles, Cars Renault Laguna Fault

my 96 laguna 1.8 8v started to misfire and wouldnt idle i changed everything and found it be dirty contacts on the ecu plug, now it runs fine.

dave g
August 2009

I HAVE A 3000 RENAULT LAGUNA THE ENGINE HAS STARTED RUNNING ROUGH AND THE MANAGEMENT LIGHT HAS COME ON COULD IT BE THE 02 SENSORS

RALPH
January 2009

tryed the oxy sensor no change

disparing renault owner
January 2009

try disconnecting the oxygen sensor ,(unplugs)see if this makes it run any better,it will not do any harm.replace it if that works.

steve
January 2009