Throttle body?...

[Ads_172]

Occasionally, normally when crawling in traffic, I find that my 172 idles at about 2k revs and that when I blip the throttle it will settle back down to about 700. I've been told that this is because the 'butterfly' hinge on the throttle unit is slightly bent so that is sometimes trapped open.

Not a major problem and not one that I'm going to spend £150+ on buying a new throttle body/unit.... but does this sound like the right problem and will this Ebay part fix it?

Also, any idea how much or how easy it will be to fit?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=4590763166&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1

Cheers,

Adam

 

[Fred@BTM]

thats a mk2 172/182 unit (fly by wire)

how the hell would you have a bent butterfly hinge????

 

[Ads_172]

God knows mate, I bought the car like it and it happens so rarely that I haven't thought to get it checked out further and find out what's caused it or what's going on. So it wouldn't fit my Mk1 172 then?

Any other more plausible reason as to why the revs idle at around 2k sometimes? The guy, as genuine as he was, may have not known the real reason himself...

 

[Fred@BTM]

mk1 172's use a cable throttle body

never heard of one with a "bent butterfly hinge"

sounds more like a sensor fault

 

[Ads_172]

Hmm, think I'll take it to ClarkieV6 and see if they can diagnose the real reason...

Cheers Fred,

Adam

 

[OldClio172]

I have a Mk1 172 that does exactly the same, I have replaced the throttle cable but no luck, when I find the reason I will let you know

 

[Dan@SJM]

try taking the idle control valve off, the black thing on the inlet manifold behind the renault sportsign, and clean itwith carb cleaner.

 

[Ads_172]

Cool, will try that on the weekend, cheers mate.

 

[Andyman]

Ive had a few problems with idling on my mk1 172 over the years. First i'd try cleaning the throttle body out.
More likely to be a leaky gasket somewhere if its reving that high tho as the tb would have to be seriously gunged up......worth a look all the same

 

[16v_jon]

throttle possition sensor is what you want to clean on the mk1 172, its at the front of the unit held on with 2 x 10mm bolts, if its a mk2 on my mk2 throttle body i change the whole unit and its never been better