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post #10 of (permalink) Old 27th March 2011
Technical Supremo

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Re: Assorted Clio Problems

Although it hard to tell from the video clip I get the impression the fuel mix is going too rich and the Lamda sesnor in the exhaust is detecting unburnt gases - hence the warning light.
After a few revs the gas mix in the exhaust is refreshed - hence the light goes out.
Judging for the erratic idle speed the engine wants to stall but the ECU then adjusts the throttle to compensate.
A faulty MAP sesnor tends tends to cause very poor acceleration or poor engine performance when under load such as when going up hill, etc.
It may be a temperature related problem so it may be worth checking the engine coolant and inlet air temp sensors.
No gaurantee this may be the problem but as said earlier it is hard to judge when not being able to see, hear or drive the car.
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