Can you close the flap with a scan tool? if yes try the steps below. I copied from somewhere.
If no check your wiring the connector is known to have a broken wire from engine torque.(my issue)
AF07.61-P-2000-01Ain recirculated air flap actuator
ENGINE 111.981 in MODEL 203.747
1 When ignition is switched off press flap slightly past limp home
position. (this is 90° position) must be changed manually from resting position.
(flap may close immediately then reopen) mine did not
2.Switch on ignition for approx. 15 seconds, switch ignition
3. back off again and wait for processor shut-off delay.
shut-off delay has a duration of approx. 5 seconds.
3. Switch ignition on for approx. 45 seconds, switch ignition
back off again and wait for processor shut-off delay.
The learn-in procedure for the recirculated air flap is then
P.S. On the second step during the 45 seconds wait, you can actually see the flap close up automatically and then open up again - pretty much resetting itself.
What's the starting position?
I think I got it...
"90° position must be changed manually"
So, that means, push it, hard apparently according to E,
and knock it about 20 degrees off Kilter from straight up, and do the thang...
can't wait to try it tomorrow
I actually just closed the flap a couple of times, and because its spring loaded it goes back to its open position,
and then I moved to step 2, which was the ignition part.
You'll know when its working as an actual noise comes out of the valve,
and on the third step (which is the second time you turn on the ignition) my flap actually closed on its own and then opened, telling me that in fact it actually resettled itself.
So I did the flap reset the other day.
I held it slightly off 90 degree (normal position when the car is stopped)
while someone else turned the key.
It seemed to do the reset both times we had the ignition on.
It happens very quickly, opens and closes.
I tried doing it myself, but I have no idea if it worked...by the time you
get from turning the key to front of the car, no way to know if it did it already, so have a 2nd person helps.
I didn't notice a big diff on driving. And the position of the flap after it warmed up for 30-60 seconds (when it's completely closed...which leads one to ask, where the heck is getting air from during that time?)
was still at maybe 30 degrees at idle. I'm still not clear on the function of that flap. When open it pulls a mixture of fresh air, and exhaust off the
oil breather hose. When it's closed it.... ?????
Makes a funny sound! Like it's gasping for breath!
1. with Ignition of and air filter out; reach down to the Recirculating flap and put some pressure on it on the direction it closes (to the left)
2. Turn the ignition on and the flap closes; keep ignition on for 15 seconds. However the flap doesn't stay closed for 15 seconds but return after about 3 seconds.
3. Switch ignition off for 5 seconds.
4. Switch ignition on for 45 seconds.
5. switch ignition on for 5 seconds.
Start the engine. What I noticed is; the flap closes 70% of the way when idling but fully opens at higher RPM.
Not sure at this point if there is a fault with the Flap's servo or some other sensor is playing a part in this problem.
Read a few threads on resetting the Flap but no where I saw any info on how long it should remain closed and how it should behave under high RPM. It needs to closed under load/acceleration but how should it behave when the car is not moving. What other sensors play a part on the workings of the flap?