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post #248 of (permalink) Old 21st August 2012
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Re: Renault Clio 2003 - Engines - Loss of power and Warning Light

Originally Posted by sixteen_valve_vanessa View Post
Hello - first post. I've had a trawl through the forums and found similar questions but can't find one that matches my own problem.

Basically what happens is that I am driving along and all of a sudden my clio (03 Clio Expression 1.2 16v) dramatically loses power and acceleration. When this happens the electronic fault warning light comes on on my dashboard. (The one with a jagged line and a 'squiggle' beneath it!)Because my maximum speed drops to about 30 mph I have to limp to a layby or the next set of traffic lights and turn the car off and on again. This always seems to clear the problem... until the next time it occurs.

I took it to a garage who hooked my car up to a system which is (supposedly) able to diagnose the fault. They said that it was a problem either with the throttle potentiometer or another little switch. So I spent 120 quid having this diagnosis done and these two components changed. Guess what? It still happens!

I have had the car for a year, it has 63k miles on the clock and this fault has been occurring intemittently for about 4 months. Unfortunately it has been happening more and more recently such that it happens pretty much every journey I make now.

Its bloody annoying and actually pretty dangerous as it seems to happen without warning. Any advice gratefully received!

PS My car is blue if that makes a difference.
We had exactly the same problem with my 52 plate 1.2 Clio (also Blue ) We traced the fault to the ecu under the bonnet near the bulk head. There is a heavy metal cover / heat sink (100mm square) that pushes onto the ecu . This actually had worn through the loom and close inspection found an exposed red wire that was chafed through. We sealed the exposed wire with a small amount of silicone seal, and stripped the outer sheath from some electrical flex and fitted around the cable entries on the cover / heatsink. This makes it a nice tight fit. You can try just taking the cover off for a couple of days and see if the problem stops, but you dont want to leave it like that. Hope this is of some help.
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