HELP ! New motor won't rev past 2000 rpm - Page 5

FasterCat · 10-23-2009, 09:28 PM

Well

If I'm observing it correctly, the "rooster comb" has a pin which engages the manual shift valve.

There are two grooves in the manual shift valve:

One at the front, and another one which is "one notch back" from the first one .... the second one also has a "circlip" on it.

Which one is the pin on the rooster comb supposed to be engaged in ?

Can someone get me a picture showing a correctly engaged manual shift valve on an AOD ?

This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!

Stepman · 10-23-2009, 09:43 PM

I'm not sure about spool valve hook up but, want to throw another thought out there. Put it in reverse and see if it will rev...if not, it sounds like a fried forward clutch that won't let go.

FasterCat · 10-24-2009, 10:06 AM

Quote:

Originally Posted by Stepman

I'm not sure about spool valve hook up but, want to throw another thought out there. Put it in reverse and see if it will rev...if not, it sounds like a fried forward clutch that won't let go.

... excellent ... another thing to try ... thank you

(on the Ford Trans forum, someone just informed me that I have the shift valve engaged correctly)

Just to be sure ..... fried forward clutch = needs rebuild ?

kevink1955 · 10-24-2009, 01:00 PM

Sorry I cannot help more, I thought we were on the right track with the manual shift valve. I know nothing about AOD's so I cannot comment on the foward clutch idea.

I think I would report your findings on the tranny forum and ask if the foward clutch could cause this and if it as a common problem in the AOD

Please post back when you find the problem so we can all learn something

Stepman · 10-25-2009, 10:39 AM

If the clutch is fried, it will be trying to go forward in ALL positions. So, if you put it in reverse, it'll try going forwards and backwards at the same time(can't happen). Also, yes, you have to open it up to fix it.

my77stang · 10-25-2009, 10:52 AM

on the vacuum thing, it does seem a little low but it depends on the cam. what are the cam specs?

FasterCat · 10-25-2009, 11:42 AM

Quote:

Originally Posted by Stepman

If the clutch is fried, it will be trying to go forward in ALL positions. So, if you put it in reverse, it'll try going forwards and backwards at the same time(can't happen). Also, yes, you have to open it up to fix it.

Nail on the head .... Thank You Stepman !

.... yup, it tries to go forward in all gears ...
... looks like I'll be getting a new tranny for (early) Xmas !

FasterCat · 10-25-2009, 11:48 AM

Quote:

Originally Posted by my77stang

on the vacuum thing, it does seem a little low but it depends on the cam. what are the cam specs?

275/ 279, .499/ .510

.... would the load of the "pushing against the Torque Converter" cause a low vacuum reading ?

Stepman · 10-25-2009, 11:51 AM

Yes, being under a consant load will drop vacuum a bit.