92 Ranger with a vacuum modulator problem.

[Pops65]

I have a 92 and the modulator went bad and was sucking tranny fluid into the intake. I couldn't find a new modulator today anywhere and was wondering what would be the drawback to driving the vehicle with the vacuum line plugged off at both ends so that I don't have a vacuum leak and the modulator is not connected but also not leaking out . If anybody can tell me what happens when you disconnect the module , I would really appreciate it . Thanks Scott.

 

[Opera House]

You will have some nasty shifts and could break a band. Whats wrong with driving aroune with it leaking. Lots of modulators have leaked for a long time, just monitor the fluid levels.

 

[Pops65]

thanks for the advice

The problem with it was I was kicking out clouds of smoke at stop lights that would make the original James Bond DB7s smoke maker blush and it was giving me a horrible knocking noise, oh and fouling my spark plugs. I took the vehicle for a test dreive with the unit isolated and found that it shifted harder than usuall when accelerating normal but wasn't to bad if I kept my foot out of it . I think that driving long distances with it unhooked could definately bring on more problems. The difference in the motors performance is extreme as I no longer have a transmission fluid injector in my manifold. However , my new Question is this. WHAT COULD HAPPEN TO THE OTHER VACUUM UNIT THAT MIGHT HAVE BEEN EXPOSED TO TRAN FLUID ? Anybody??? Hey thanks for the support guys ,it can be a pain in the butt trying to decipher the quirks in older cars and it helps to have others that may have experienced the same probs.

 

[Opera House]

Assume you mean the vacuum tree on the manifold. Hoses and caps tend to fall off once softened by transmission fluid. Suggest some ty-wraps or clamps on those items. A hose you can put back on, but if you lose a cap, it may be hard to get home.

 

[BrooklynBay]

Welcome to this forum! I've moved your thread into the transmission section. You could use Seafoam to clean the vacuum lines. Many local auto parts stores sell modulators. I have 4 extra ones if you have trouble finding one locally. They sell an adjustable, and a non adjustable type.

 

[Pops65]

Thanks guys I found one at autozone . Now its just a matter of putting it in . I will check out both methods of r&r and see which is the faster .

 

[BrooklynBay]

Which type did you get?