Idle Speed Actuator
 

Hi, my local garage has informed me that i need a idle speed actuator (035133455f) for my CQ. A new one is quite pricey (wallet feeling light after christmas :lol:), so i wondered if any of you guys had a spare i could buy from you?
Thanks in advance, Al.

is this the warm up regulator valve?

if so I have a factory refurbished one sat here.

Thanks for replying Quattro , but i dont think so mate. The guy that looked at the car for me said he thought my problem was the actuator and then went on to say there was a small chance it could be the warm up regulator. So i guess they are two different things? I hate knowing so little about cars!!
I'd better go down the route of a actuator first, if that doesnt work then i hope you wont mind me getting back to you about the part you mentioned.
Al

Maybe give us engine code or at least year and engine size? :) Although, when searching that code and looking on pics, that thing looks like old k-jet [like KV] ISV to me :)

More commonly known as Idle Stabilising Valve. Frequently found on 1980s 5 cyl Audi's.
Typically above the rocker cover at the rear with lots of vacuum pipes going to it.
Never had trouble with mine, but have read of people cleaning them with carb cleaner...
The warm-up regulator is something rather different.

G.

Whats the reason - is the car significantly hunting up and down in revs when idling?

1985 cq kv2.2 :)

No the opposite if anything. When cold, the car wont idle at all! As soon as you lift off the accelerator the car stalls, even when driving! Takes 6 or 7 minutes of driving before it warms up enough that it wont stall. It makes driving very awkward, will appreciate any help on this subject.

Reading back through these posts ( Thanks for replying btw) i'm concerned i'm asking for the wrong part, and this may not even be the cause of the problem anyway!! I'm getting confused, please keep your ideas and help coming. I really need to get to the bottom of the problem soon, as the car is my daily driver.

Hmmm - I always thought the ISV controlled the idle only? - happy to be proved wrong here though by the experts

I would think that it not idling from cold is more like the cold starting part of the fuel injection system, like the thermo-time switch, warm up regulator or the cold start injector.

I have info below to check the warm up regulator - when the car is cold

disconnect the wires to the warm up regulator
Connect volt meter across the terminals of the look you have just disconnected and start the car, you should see a minimum of 11.5 volts at the connector
Switch off ignition and connect an ohmmeter across warm up valve terminals, if it does not show a resistance of 20ohms - its knackered

Other info on these checks can be found in the Haynes manual for the Coupe pages 94-95 - not great but its a start...
Bentley Manual deals with the emission's controlled K-jet which is no help as it uses and ECU!

Martc don't forget your ohmmeter will not show stuck ISV :)
To me this sounds like ISV or it's control unit failure.

Does anyone know what actual part, the number they have given to me belongs to?
035133455f, they called it an actuator but i'm guessing they wont have the knowledge you guys have.

Its the ISV - If in doubt always try a part number in google...

http://www.rmeuropean.com/Part-Numbe..._40937279.aspx

I,ll watch this thread.:nod:
I have similar problem(same engine)when cold and hot.:confused:
It stalls and then sometimes it catches(next start)and sometimes it doesn,t??
I,ve cleaned stabaliser(carb cleaner)all that did was cure idle speed.(level now)
Cleaned all breather pipes,well bunged up.That seems to has made the car more responsive.But still same problem??
When I,ve got more time I,m going to do more checks.I can put up with it for now,because it only happens every so often.
We can confere notes.:tup:
I,m going to get my multi-meter out and also test all the pressures.
I,ve read afew manuals and still none the wiser.So many Could be,s.
It will take time.
I will update you,when I do checks?

Thanks Mart for that, and your other posts. So i guess i should get the isv, seems as thats the part number they have given me. So should i buy i new one, or is 2nd hand ok...and does anyone have one they want to part with?

It does sound like you have your hands full as well mate...good luck with it. Mine is just from cold thankfully.

have you had it on a CO meter... i just turned mine up with a long allen key...
the question i have ... my 2litre 5cyl doesnt have that valve but the 2.2 5 cyl does.... whats the difference...

it's unlikely to be the ISV if it's only showing symptoms from cold.

I'd suspect a fuel / air mixture problem. might be worth inspecting the breather and vacuum hoses on the intake and cylinder head ventilation tract

I am not 100% certain its the ISV causing this problem, if it was the ISV failure then the idle would be all over the place hot or cold. I would look to see if its something else first.

Printed this thread off and showed my local garage.....they have know changed there minds and have asked me to go down the line of the warm up regulator!! I've pmd quattrokid so hopefully he will get back to me about his recon one.
Al.

Did the warmup regulator fail the test then?

To be honest mart, i've not driven the car for a week. I dug the missus car out of the snow and have been using that, it's cheaper tp repair! :nod::tup:

I think they have read through your guys opinions, and think it would be better to start with the warm up regulator. I'm happy to go with the flow, i just want her back working properly.

replied to your pm...

I had a big split in the turbo hose that goes to the metering head, caused me a ton of problems until Colin4wd found it, once the turbo metering hose was replaced and a bit of re setting up its been fine since.

only prob is,is that you have to remove the metering head and air box to get to/ see this hose....

warm up reg is here but its an expensive mistake IF its still not the problem you have bud.