A4LD vent ube

[tgraves2]

I have an '88 with the motor, trans and gearbox from a BII. There is a metal tube pointing down by the cat that runs back toward the tranny but it's too tight to get hand n to follow it all the way. Could this be the vent tube? I really need to find this to make sure it is unplugged as I lost fluid the other day while driving. Also, can you tell me how it is connected - i.e. - bolted, pressed, welded, etc?

 

[Explorin94]

It should bolt in with the upper housing bolts. The tube is "U" shaped and has holes at the top.

 

[tgraves2]

I don't know what this tube is then. It is not "U" shaped. It comes down on the passenger side of the catalytic converter just aft of the tranny. It goes up a few inches then almost 90 degrees forward and up again then level again along the side of the tranny but I cant get my hand in there to "see" where it actually goes. I tried running a hanger up through it and some bits of sand looking stuff fell out, so that's what makes me think it might be plugged some.

 

[Explorin94]

Could possibly be the line for the vacuum modulator of the transmission. Does the truck shift OK?

 

[tgraves2]

It seems to shift OK, just a bit late (I think) into OD.

 

[Explorin94]

Where at in Illinois are you located?

 

[Sasquatch_Ryda]

Sounds like the vent tube to me. Passenger side, points straight at the ground.

 

[tgraves2]

A4LD Vent Tube

Explorin94 - I live just south of Greenville, about an hour east of St. Louis.

Sasquatch_Ryda - So, is that on the driver side or the passenger side? And, is it back by the catalytic converter? How do you get to it?

Thanks for all the input. Another question; could the fluid exiting the vehicle be because it was low?