2005 Renault Scenic need help misfire what is causing it

Car: Renault Scenic
Year: 2005
Variant: 1.6 petrol auto
Categories: Electrics, ECU, Warnings & Lights
i have a 2005 renault scenic 1.6 auto the car started to misfire so pluged it into computer came up misfire on 4 so swaped coils round pluged it back in still misfire on 4 so i took the injectors to diagnostic centre came back no fault, i have serviced car fully the plugs were wet and the car smelt of petrol week b4 misfire tryed to get ecu tested but no one has heard of johnson control ecu told to take it to main dealer. Could it be anything else before i get ripped off at renault please help ....
Posted: Apr 28, 2010 (14 years ago)
hi, try a compression test see if no 4 is low,check wiring on no4 injector see if it is firing injector,check if coil is feeding no 4.ask a mechnic at a main dealer to see if they have an address where they get their ecus tested
Posted Apr 28, 2010 (14 years ago)

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