I hate my clio...idle of doom!

[RichMcc]

My ISCV arrived today at last, and got promptly fitted...

Doesn't make a blind bit of difference.....

I start the car, it idles at 1100 - 1200rpm
If I then rev the engine it revs then drops to 1500rpm then bounces between there an 2000rpm.

Once the engines warm the problem gets worse.

If I unplug the pressure sensor the car stalls so that seems to work.

However if I turn the aircon on some times it drops back to 1100rpm.
Or if I hold it on full lock the revs drop to 600rpm but sounds like its about to stall. Then they go back up when released.

The car does drive but people look at you funny thinking your purpously reving your engine. When pulling off the revs drop down to 8-900rpm then build. If you dip the clutch the revs have a spaz shooting up and down between 600 and 2000 but settle around 1500 until you stop then it goes back to bouncing around.

Im really really really p!ssed off with it now! :banghead:
I dont understand... all I did was to unplug everything, take the top off, polish it and put everything back a week later....
Its bolted down, I used fresh gaskets, and a little gasket sealant on the bottom breather just in case the rubber seal was dodgy.

Just spent £58 on a stupid valve and it wasn't that

Heres the Idle control valve and think thats the fuel tank breather in front of it. The pipe on the ISCV leads to the induction hose. The oil breather pipe is connected under the throttle body.

Manifold pressure sensor is in place.

Temperature sensor is also in place.

Everythings where it should be, everythings sealed, bolted, tightened.

And it STILL doesn't work!!!! :dapprove: :banghead: :argue:

 

[wee_al_270]

my advise mate would be to take it to a renault dealer and get them 2 put there diagnostic equipment on and c what they find. probably not wat u want 2 hear as it'll be more money but probably the best option mate.

 

[V1NNY]

i think i had this problem, it idled at 1500rpm or above and it used to accelerate for me when i was coming to a stop, then it just went away

 

[ben_p]

rich me and u have the exact same problem,! to a tea, both same car! same took my mani off when i blew a plug, put evrything back in place, this happens. ill pm u my mobile number to see if theres anything else in commen

 

[Adam]

^^^^^.why dont u 2 just go out.....lol

 

[ben_p]

lol

 

[Adam]

so whats the plan now then......
cos i thought once this was changed then all would be a-ok

 

[ben_p]

so did i, i knoticed rich that if u leave the engine running then remove the breather on the vdo and seal it, the revs drop too 1.4k, ?

 

[RichMcc]

mine drop to below 1k when I do that

 

[ben_p]

have u checked the rear o ring seal? i need to do this

 

[ben_p]

ok this does not sound like a concistant electrical prob, im assuming it s aai leeka nd the map sensor uis trying to correct the varient presure?

 

[benji&eka]

to start with remove the nasty awkward and prone to sticking
every 25k throttle cable from the throttle body then ensure by means of a visual check of the throttle valve that this is closed ( in throttle body)
start the car and observe idle speed.
still way too high (and i mean over the norm for the cold engine)
thouroughly check the throttle body to inlet manifold seal (spray a little easy start or brake cleaner at the join (ensuring none goes into the intake normaly)
and listen for a change in engine note. then work back to the manifold itself
that lot will do for starters

 

[benji&eka]

i have seen 1 ph1 172 with a damaged throttle valve (my own) and 4 with sticking cables all displaying the above symptoms

 

[RichMcc]

throttle valve? do you mean the tps? if not where it it?
Ive tried spraying the seals and it all looks fine, I used gasket sealer the second time I fitted it all just to rule out it could be an air leak.
Ive also tried it without the throttle cable attached and the exact same thing happens if I rev the engine manually.

Ben_p do you drive yours like this? I took mine for a spin to see if warming it up would help?

 

[benji&eka]

thottle valve the bit the cable opens and closes
also try taking off the pipe to the iscv at the air claener end and stick your hand over it for a mo and observe result

 

[ben_p]

yer have drove mine for a week

throttle valve? do you mean the tps? if not where it it?
Ive tried spraying the seals and it all looks fine, I used gasket sealer the second time I fitted it all just to rule out it could be an air leak.
Ive also tried it without the throttle cable attached and the exact same thing happens if I rev the engine manually.

Ben_p do you drive yours like this? I took mine for a spin to see if warming it up would help?

 

[RichMcc]

I gave the throttle body a good look over while it was off and checked everything was moving when the throttle is pulled if thats what you mean.

Pipes clear, checked, cover it up and it sucks and the revs drop down to normal... ish.

 

[ben_p]

thottle valve the bit the cable opens and closes
also try taking off the pipe to the iscv at the air claener end and stick your hand over it for a mo and observe result

we both have done this, it does make it drop but not to idle too more like 1.4 k from 2.5k, i have checked my seals n it still does it, when the engine is running, u can hold the t/b shut and the revs still shoot up!?

 

[RichMcc]

yer have drove mine for a week

Mine drives fine although it seems a little... not quite right, unless its because I havn't driven it properly since christmas.

But I feel like a total gimpoid when you stop at the lights and in traffic and my engines reving its self lol

 

[RichMcc]

I wonder if santa fitted us both with a omex clubman launch control and thats why its holding 2k rofl

 

[ben_p]

I gave the throttle body a good look over while it was off and checked everything was moving when the throttle is pulled if thats what you mean.

Pipes clear, checked, cover it up and it sucks and the revs drop down to normal... ish.

have u checked the o ring seal m8

 

[Cookie]

Mine was doing this.

Tho mines a 1.2, same problem.

Just had a service and the air filter and plugs have been changed, and nowt else has been touched. Fixed the problem

Considered looking at those?

 

[ben_p]

Mine drives fine although it seems a little... not quite right, unless its because I havn't driven it properly since christmas.

But I feel like a total gimpoid when you stop at the lights and in traffic and my engines reving its self lol

yes i look like a gmp at light, spec with my de-cat and unsilced centre lol, mine does feel a liltle slugish i mite add

 

[ben_p]

LOL AT THE LAUNCH CONTROLL! Cookie ive had new plugs, oil etc, cheers anyway m8y

 

[RichMcc]

Checked every seal over and over, completely removed and refitted as well.

Its either got to be something really really stupid, or something really really wierd!

God looks like Im gonna have to take to walk of shame..... into the renault garage

Ive also got two errors logged on my dials, T & J if you do the diagnostic thing.

 

[ben_p]

mmmm i havent got these. wierd. its pissing me off! just donr want it to be the map sensor, wonder how much they are!? did you clean you t/b ? i did this when it was off?

 

[ben_p]

wondered what the lil black sensor does on the front of the t/b too?ill get a pic

 

[RichMcc]

Yeah I cleaned it too had a fair amount of deposits on it.
The throttle position sensor, when the throttle opens it turns a little wedge thing which moves the sensor. Checked that too! Turns ok :/

 

[ben_p]

^^^^the unsure one^^^^ tps? does this have a bypass for air?

 

[ben_p]

hhhhhmmmmm i cleanded mine, wonder if we have damaged em?

 

[RichMcc]

I dont see how its not like I was rogering it open or anything just gave it a quick wipe...
No tps is nothing to do with the air it just tells the ecu the position of the throttle plate thingy.

 

[ben_p]

kkk, all im wondering is if the tps is damaged and its telling the ecu a funny reading and the vdo is trying to correct it with the air flow change

 

[ben_p]

but, if t/b is closed and vdo is sealed with ur finger? and it still idles a lil over then it MUST be getting air from somewhere

 

[benji&eka]

I gave the throttle body a good look over while it was off and checked everything was moving when the throttle is pulled if thats what you mean.

Pipes clear, checked, cover it up and it sucks and the revs drop down to normal... ish.

if you completely block the pipe to the iscv and the car does not stall its getting air from somewhere else. either the throttle valve is open or you have a leak

 

[Ali]

Nice Polished head tho.

 

[ben_p]

if you completely block the pipe to the iscv and the car does not stall its getting air from somewhere else. either the throttle valve is open or you have a leak

yer i know, but where from, im lost!!!!! can t find a single f**king garage (excuse my french ) that will do a air leak test, and the one that would said 50 notes!

 

[benji&eka]

where are you based?

 

[ben_p]

warrington n/w

 

[benji&eka]

bit far LOL

 

[RichMcc]

this is very true...... theres a little pipe next to the TB on the manifold, that bleeds air in, the seals on the two sensors dont look all that hot.