Problem with MK1 172

[chughes163]

Hi guys

I have just bought a 2000 Clio 172 and it has a slight issue.

Basically its got a bit of an idling problem - say you have just been driving, when you slow down and stop the car will stay at about 2-2,500 rpm for about 5 seconds and then drop back down to about 1000-500rpm. Also when your just stationary it does idle a bit strange sometimes - up and down between 500-1500rpm.

Also when you accelerate off at speed the power delivery feels a bit 'wobbly' at about 3-4,000 rpm but fine over or below this. The clutch, gearbox etc. all feel fine and when you disengage the clutch the engine all revs/sounds all ok.

The guy who sold me the car said it needed a new tension pulley - do you think this would cure the problem? im not at all mechanically minded to be honest but the car was too cheap to pass up and thought I would take a punt on it. My mate is a mechanic and is due to look but thought I would ask the experts first!

Thanks a lot

 

[nicknick]

Sounds like your throttle body is sticking, there's a guide on here somewhere aimed at this.

 

[chughes163]

cheers! as im not a full member i cant access it though - i think my mate is however!

 

[nicknick]

Its pretty easy anyway, just take it off, give it a good clean, get the carbon and dirt off then degrease it paying attention to the spring just below it.

 

[Aluco]

Undo your airbox silicone elbow in the engine bay then its 4 bolts to take it off There is a electric plug that needs undoing too.

clean the inside with some WD40 and a rag and refit - done.

 

[chughes163]

brilliant - thanks a lot guys!