hjelp: 1,8 gti - 83 tomgangsproblemer auxiliary air valve

Sliter med tomgang på en 83 gti og skal i gang med feilsøking.

 

Vedr auxiliary air valve ?

Noen som har info om denne karen ?

Tenker da på eks ohm ? spenning til ventilen når ? etc ?

 

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The throttle plate is what is actually controlled by the accellerator pedal. I call it an accellerator pedal and not a gas pedal because it doesn’t control the flow of gas, it actually controls the flow of air into the engine. Calling it an air pedal would just be weird though. Anyway, when you push down on the accellerator pedal, it opens the throttle plate inside the throttle body allowing more air into the engine.

 

When you let off the accellerator and the car is idling, the throttle plate is closed. However, the engine must get air somehow to keep running. The auxiliary air valve allows air to bypass the throttle plate. A ‘bi-metallic’ spring presses on the valve when the engine is cold and lets air through, allowing air to reach the engine. As the engine warms up, less and less air moves through the auxiliary air valve due to the nature of the valve. The two wires on the auxiliary air valve are for a heater circuit. Of electricity through this bi-metallic spring causes it to expand, causing the valve to close as the engine warms up.

Hei igjen godtfolk . Fant noe info NÅ !!!

 

 

The auxillary air valve har to different ways in opening/closing.

 

Nr 1: There is a bi metal strip inside which opens and closes the air valve in relation to the temperature outside the valve. At -30 degrees the valve should be fully open. At +20 degrees the valve should be partially closed.

 

Nr 2 :There is an eletrick heater element inside the valve. The current feed to the valve heats ut the element, making the bi metal strip to close the air slide

 

How to check the air valve

 

The engine should be cold.

 

1. Pull out you fuel pump relay.

Disconnect the rubber hoses to the valve to be able to see trough it

Disconnect the eletrik cable to the valve

Connect a volt meter to the two pins.

Make a jump lead between 30 and and 87b (87)in the fuel pump relay socket.

Turn on the ignition. You fuel pump will start to pump. You should now have 12v at you volt meter.

 

Connect the eletrik plug to you valve again. See trough the valve. The current is now flowing through the element cousing the bi metal strip to get hotter. The air slide should now be slowly closing. When it hot there should remain a small hole trough the air slide. (Use must have your jump lead at the fuel pump relay socket still connected.)

 

If the air slide does not close now you should mesure the resistant in the heater element. To do that disconnect the eletrik plug at the valve. Connect an ohm meter to the valve. You should find resistant. If not the heating element is broken, and you need a new air valve.

Når jeg stenger ventilen ( med varmvann eller 12v ) så stenger den, men jeg kan fortsatt blåse luft gjennom den ( ganske lett )

Når jeg åpner ventilen ( liggende i frysen ) så åpner den , men ikke fullt , ca 1/4 kanskje (max )

 

Noen som har veldig god peiling som kan svare ?

eller noen som har en slik liggende som kan teste .

 

1. Skal man kunne blåse luft gjennom når den har stengt ?

2. Skal den bare åpne ca 1/4 når vært i fryser ?