Revving in neutral. (1993 Ford Ranger XLT 3.0L 6cyl, Manual)

[jon empire]

My engine is revving in neutral and only when it is put back into gear does it correct itself.

For example, today I traveling at 45mph in 4th gear, as I went to down shift (in neutral) the engine began to rev to high rpm's and would have continued to rev but I put into 3rd gear and it recovered.

Help please.

Thanks

 

[moo]

My 94' did the same thing. Try disconnecting the VSS on the back of the trans. I replaced the IAC and the TPS and still did it. Strangly disconnecting the VSS stopped it.