vacuum / transmission question

[grimlock97]

Hello again, I have a couple questions, I have a vacuum line coming off the transmission to the intake manifold, about half way up there is a T joint with a hose coming off it bit not connected to anything where if anywhere should this vacuum line go? It has a strong 15-20 psi vacuum while at idle, it had the T when I got it but don't remember pulling it off anything, next question is I have the c4 auto in park, hut I can push the Bronco around like its in neutral, I changed the tranny filter and one small spring fell out so I put it back where I thought it went but I don't think that would let the tranny not work properly, I just today have the Bronco idling properly and just now warmed it up enough to fill the transmission with the proper amount of fluid, but it still just roles around like It's not in park, thanks ahead for any info

 

[DirtDonk]

Does it look factory? Could have been for a vacuum gauge that someone installed in the past. Could be to some other item, such as one of the semi-unique smog items that were only on the '72 and some '73 models maybe? I don't think the Ambient Switch needed vacuum, but I could be wrong.

The usual "T" fittings are up at the manifold. Can't think of any that need to come from down there on the trans line off-hand. If you don't find anything obvious, just plug it for now.

What year is your rig? Is it a standard C4, or something else?

Paul

 

[grimlock97]

It's a 71 and it was converted from a 3 speed to the c4 by the po, when I pit my finger over it to plug it it does sound a smidge better but it makes another sound in the transmission it seems

 

[Viperwolf1]

Plug the vac leak and re-adjust the trans linkage. If that don't help the park pawl is broke.

Should have been a small valve that came out with the spring. Hope you got it back in too.

 

[grimlock97]

No valve fell out, the Bronco was driving and parking fine before I changed the filter

 

[grimlock97]

Now the damn thing won't move at all, I have a hurst shifter, and when I pull it back to reverse, the motor changes pitch as normal but nothing engages, no movement, forward is the same way,nothing any ideas?

 

[Viperwolf1]

Transfer case in gear? Did you adjust the shifter? Might be because of the missing pressure limit valve that goes on top the spring.

 

[grimlock97]

Yeah, ummmmmmmm it is the transfer case, I went and talked to a local tranny expert and he looked and laughed and pointed at the transfer case shifter, I felt dumb!!! Thanks guys

 

[Viperwolf1]

Everyone has done that at one time.