Renault Scenic 1.4 16v fidji 53 reg - Scenic 1.4 16v poor cold running

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Sun 14 Aug 2011 21:53
Renault Scenic 1.4 16v fidji 53 reg - Scenic 1.4 16v poor cold running - scenicphil

Hi, I have a renault scenic 1.4 16v (Engine code K4J)

Had a coil fail causing a missfire so replaced all 4 coils with beru ones and also a set of new spark plugs from renault. This fixed the missfire.

I have had the timing belt done, new water pump, new coolant, oil and filters all replaced in the last 3 months.

Car was running like new.

However now after leaving the car stood overnight or for more than 6-7 hours so the engine is cold, it seems to hesitate after you pull away most noticably in second gear between 2000-3000rpm this only last for a few minutes and once things get warm the car runs fine.

It only does this when cold.

Can anyone help me it driving me mad

regards

Phil

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Sun 14 Aug 2011 23:31
Renault Scenic 1.4 16v fidji 53 reg - Scenic 1.4 16v poor cold running - Avant

I've removed the duplicate thread but I hope people will respond to this one. Maybe find an independent Renault specialist who won't charge as much as a main dealer. But he'll need to have the diagnostic equipment as this sounds like one of those faults that never happens at a garage!

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Mon 15 Aug 2011 12:10
Renault Scenic 1.4 16v fidji 53 reg - Scenic 1.4 16v poor cold running - Fernando P

My money is on the fuel injection system coolant temperature sensor needing replacement as that affects the start up running from cold until the engine is hot.

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Mon 15 Aug 2011 13:35
Renault Scenic 1.4 16v fidji 53 reg - Scenic 1.4 16v poor cold running - scenicphil
Strange thing happened this morning when driving to work, hesitant as I pulled away as normal once warmed up car ran fine. Switched on the air con and it hesitated once but that was all. Anyone have any ideas as to why turning the air con on would cause this?

Regards
Phil
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