dobbslc
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- 11,751
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- Hertfordshire UK
The youngest sons Fiat 500 is intermittently running on two or three cylinders (1.2L 8 valve engine) . I'm not sure when this started but I had to replace the thermostat housing yesterday as the plastic pipe had snapped off loosing most of the coolant.
The post CAT O2 sensor plug was full of coolant so I cleaned it with brake cleaner as that's all I had but I wouldn't think a dodgy O2 signal would make a car run on three cylinders
It then seemed to run well after the coolant and cleaner had dried out.
To reach the stat housing you have to remove the ECU and a few other connectors but I've checked these and they are all plugged in ok
Coincidence or does it have a dodgy coil pack?
Fix It Again Tomorrow
The post CAT O2 sensor plug was full of coolant so I cleaned it with brake cleaner as that's all I had but I wouldn't think a dodgy O2 signal would make a car run on three cylinders
It then seemed to run well after the coolant and cleaner had dried out.
To reach the stat housing you have to remove the ECU and a few other connectors but I've checked these and they are all plugged in ok
Coincidence or does it have a dodgy coil pack?
Fix It Again Tomorrow