172 throttle body

[williamsvts]

got the mechanical 172 throttle body on my saxo vts.
it seems to be a bit sticky at about 1mm before closing, so sometimes giving me a 1.5-2k idle.
is this a common problem?
was thinking of just taking it apart and cleaning it?

 

[ForceIndia]

Have got the same issue at the moment, taken it off and cleaned it, not helped. Apparently there's a common spring problem.

 

[williamsvts]

is there any cure for it then?

 

[ForceIndia]

Not sure, I'm trying to find out.

 

[Andyman]

Most folk just replace it. 200+ ish - Might be just as expensive to buy a Jenvy item?

 

[mini-valver]

No harm in taking it off and stripping it. If not, Ebay, second hand ones are cheap.

 

[Andyman]

Chances are a 2nd hand one will end up going the same way sooner rather than later. This spring lark is a wearing out thing, less miles, less use = longer life

 

[Icarus]

New ones can be sourced from R-Sport for less than the dealer price (assuming nothing has changed). The X85 Clio Cup uses the Ph1 cable throttle body.

Cheers
M

 

[williamsvts]

can you not move the spring somehow so there is more tension on it? i'll have a look this week.
dont wanna buy new, as its on a saxo so would rather buy bike bodies or carbs if its gunna cost £200.

 

[Andyman]

can you not move the spring somehow so there is more tension on it? i'll have a look this week.
dont wanna buy new, as its on a saxo so would rather buy bike bodies or carbs if its gunna cost £200.

Nah when springs go thats them fooked. Not sure if its possible to buy a spring and fit it. Sure ages back i looked into it, found a ''spring shop'' but gave up on the idea with the amount of hassle

 

[williamsvts]

i mean like drill a new hole where the spring locates, putting more tension on it, its just the last 1mm where it doesnt shut if you gently ease off the throttle, if fine if you let your foot of quick though.

 

[BBCQE]

my ph1 got the same problem. i had clean it / polished it/ lub it and it still got the problem. >.<

 

[Andyman]

my ph1 got the same problem. i had clean it / polished it/ lub it and it still got the problem. >.<

Again, cable or spring prob

Very common fault on ph1's

 

[williamsvts]

i'll work something out. not buying another 1.

 

[ForceIndia]

New ones can be sourced from R-Sport for less than the dealer price (assuming nothing has changed). The X85 Clio Cup uses the Ph1 cable throttle body.

Cheers
M

Where could I order R-Sport parts from?

 

[Icarus]

From R-Sport: 0208 5420042

Cheers
M

 

[williamsvts]

i also had a sticky cable, fitted a teflon coated bike brake cable instead. just incase anyone also has a sticky cable. made mine alot better. just got the last 1,, sticky now

 

[sideways danny]

could be the throttle stop screw isn't actually touching, and therefore not working as a stop.

 

[williamsvts]

but if that was the case, the butterfly shut still be going back to its closed position, which it isnt. it need to go back about 1mm, before it shuts and i get a decent idle. it also idles properly when its on the throttle stop.

 

[Andyman]

but if that was the case, the butterfly shut still be going back to its closed position, which it isnt. it need to go back about 1mm, before it shuts and i get a decent idle. it also idles properly when its on the throttle stop.

Have a look at the back of the TB. You might need to take it off.
Often there is wear marks where the spring has been rubbing hence the reason it wont shut.

 

[williamsvts]

cheers, just getting sick of it. need to give the throttle a blip to get a normal idle.

 

[ForceIndia]

cheers, just getting sick of it. need to give the throttle a blip to get a normal idle.

Does give me cruise control at 30 mph though!

 

[Andyman]

I know what you mean lol Been through this a few years back.

Another way it to lift the clutch up on idle, labouring it. That usually brings the revs back down.

 

[c7borg]

I paid £51.50 inc delivery for mine from cliospares on ebay if that helps

 

[williamsvts]

might just put up with it for a bit and go for bike carbs. dont really wanna buy another 1.

 

[williamsvts]

i'll try and fix it 1st though, and report back.

 

[caister]

did you have any luck with fixing it?