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post #304 of (permalink) Old 30th July 2014
dave comer
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Re: Renault Clio 2003 - Engines - Loss of power and Warning Light

Had this with 2004 16v clio. Got a fault reader off ebay for 20 and looked for myself. Reader came up with 2 faults, throottle pedal potentiometer and lambda sensor.
This is what a garage had diagnosed 3 days earlier and had supposedly cured.
Got to thinking that problem did not lay with either of these so checked loom at ecu . No broken or chafed wires so looked at the relay and fuse box on left hand side by the battery.
All the fuse and relay terminals were dirty or corroded and tarnished so I cleaned them all up with some fine emery paper.
Also cleaned up the battery terminals.
Reset the fault codes and all been fine for 2 months now. Checked the fault codes on the reader the other day and no faults showing. Car runs like a dream so fingers crossed. My thinking is that the dirty terminals could have reduced the voltage to various sensors and given a false reading to the ecu which would have registered a fault and then gone to limp home mode.
Currently in dave comer's garage:
clio 1.2 16 valve 1971 triumph toledo 1300
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