My car idles fine but some times when come up to a junction it cuts out its idling at 1k what is a likley cause of this i took the dump valve off but never made a bit of difference

 

carlo, firstly try setting your base idle.

run the car till hot,
unplugg the iscv
adjust your base idle (screw under throttle body) to 900-950rpm
reconnect the iscv.


then remove the iscv, and leave it soaking with thin oil in it overnight(dont use wd40) push the internal plunger a few times to clean it all up. rag it all off and refit

and try that.

 

Cool mate will do . the idle screw is solid i tried to move it earlier all these little probs with the car teething probs im getting there with them slowly

 

if you remove the throttle body completly, stick it in a vice im sure you will remove the screw, then clean it up and grease it up

 

The idle screw is completley jammed.I have left the iscv soaking all night how stiff should the middle of it be it was solid today? should you be able to push it in freely?

 

the plunger around the middle should move on a spring...

 

i think ggr sell new idle screws, you may need to drill it, or heat it

 

Should it move easy tho? i have wrth rost off i will try free it off with that 2 moro

 

should be free yes, i used a thin screwdriver to move it,

 

Cool mine was totally solid it had a little nut at the end of the threaded rod i tried to push the whole thing in im hoping thats the cause of my idle prob

 

the center nut and and theaded section doesnt move... its the plunger that is below this that moves up and down

domt move the little nut as the iscv is caliberated at the factory....

 

ive had the same problem today where the screw is jammed, dont keep attacking the screw other wise it will end in tears, simple take off the throttle housing put it in a vice heat the aluminum housing up around the screw with a blow torch for about 5 mins and it will come out really easy, if it wont go just heat it more, once its out cut the grove in the screw slightly deeper and re use it but put grease on the thread.

 

Thanks chaps i will get a better look at it 2 moro i just took the iscv off today & soaked it in oil it looked all oily ect must have been from the old engine

 

Try checking your co when hot, you can undo the small nut, but must use locking compound when reassembling, you don't this falling into your intake!!
This does move when the ecu tells it to that is how it adjusts the airflow by moving up to let more air through gap or down to lessesn the air.
You can get allen fasteners where the allen key is smaller than the head so sits inside the thread of the fixing just lathe a taper on this, or use longer bolt with hex head that is outside the housing and again lathe a taper on end.
tabetha

 

If you need a cleaning for the icv try this

http://www.passionford.de/forum/showthread.php?t=350

 

It's in a funny language!!
tabetha

 

Makes for interesting translation.......

Here are some images to clean the idle valve

Mother screws out with 4 walnut, to make sure nothing is lost (feathers)

the Pistons in no case with emery grinding or something, gently clean it with brake cleaner and NOT Gewall pull out.

after cleaning back together and build a good spray with WD 40 / or similar

NO FAT take! this could be the Pistons on the housing glue!

the mother is about 4.5 mm deep reingedreht, please check with the appropriate gauge

BEFORE installing the valve are rubber rings to assess damage and also einsprühen.

the mother should be fitted with a tiny drop bolts securing against solve secured.