Cold start clio running rough

[Chris Thurrell]

Hi all I'm new to this forum, my girlfriends clio 1.2 16v Dymanique is having a bad time, on start up from cold it feels like it's misfiring and a bit lumpy, once it is warm and up to temperature it is pretty much ok, now it has been into the garage, they have changed the plugs, ht leads and a coil pack, also it has had a compression test which was ok, when the engine management light came on it was showing a faulty lambda sensor, the guys at the garage don't think it is the lambda sensor, they are a bit stuck and so am I, any help would be much appreciated, thanks in advance, Chris.

 

[Sesqui89]

Injector(s)?

Edit: you might get more responses if you post in a different section. Try Engine etc or Faults.

 

[Knuckles]

Do these have two lambda sensors as well?

Might sound daft but if so, it could be the pre cat sensor.

 

[smith647]

I would also doubt it's the lambda sensor.

A lambda sensor has zero effect on cold start and cold running as it'll be in open loop.. Once it's reaches operating temperature then it will go into closed loop.

 

[Hodgins]

interested in this,

mines dreadful when cold, but upto temp it drives with no issues, also now and again on a cold start, i get an erratic idle for the first few seconds.

its had new plugs, and i havent cleaned the throttle body for a few thousand miles so thats my next job