New rebuilt C4 hits neutral before hiting 3rd gear? Help please!!

5

5-oh stang

Founding Member

Apr 30, 2002

209

0

0

Aug 26, 2004

#1

• Aug 26, 2004

• #1

I have only driven the car about 4-5 miles but anyway, it is a 68 C4 and we put a Hughes Performance Transmission Kit in it and eveything is new, i also has a B&M Shift Kit. It will shift 1-2 fine, couldn't be better but when it shifts from 2-3 it's like it hits nuetral for a second or two then drops in 3rd gear? It does it either on the gas or off the gas. Anyone have any clues as to what it could be the cause of this?
Thanks alot!

 

Max Power

Active Member

Jul 31, 2003

1,774

1

36

St Paul

Aug 27, 2004

#2

• Aug 27, 2004

• #2

Either a sticking servo or a band out of adjustment, IMO. There is an adjustment procedure in the service manual.

Mine does it too, but it is old and I think the band is just worn out.

 

mustang70

Founding Member

Nov 15, 2001

2,445

2

48

San Diego

Aug 27, 2004

#3

• Aug 27, 2004

• #3

I had this same problem with my old C4. Even after it was rebuilt with good parts and a shift kit. Be careful, after we put it in my buddies 66 the tranny ended up grenading. The only thing that was usable afterwards was the case and valve body.

 

B

bull999999

New Member

Jun 26, 2004

112

0

0

Aug 27, 2004

#4

• Aug 27, 2004

• #4

Max Power said:

Either a sticking servo or a band out of adjustment, IMO. There is an adjustment procedure in the service manual.

Mine does it too, but it is old and I think the band is just worn out.

Click to expand...

Yeah, aren't you supposed to adjust the band after installing the shift kit? I installed a B&M Shift Kit in a C6 before and it did say to readjust the band after the install. Don't know about the C4, though.

 

D

Damein17

Member

Jul 26, 2004

123

0

16

Lexington, Kentucky

Aug 27, 2004

#5

• Aug 27, 2004

• #5

mine did the same thing in my 67 c4. i rebuilt the trany and adjusted the bands and it shift perfect now

 

Max Power

Active Member

Jul 31, 2003

1,774

1

36

St Paul

Aug 27, 2004

#6

• Aug 27, 2004

• #6

Yup, re0adjust after a shift kit. It's good to periodically adjust it anyway.

 

6

66candy

New Member

Nov 3, 2003

17

0

1

The Netherlands

Aug 27, 2004

#7

• Aug 27, 2004

• #7

Try to adjust the vacuum modulator and see if there is any difference....
Did you check if the vacuum modulator is connected to the hose/line?

Good luck,

Erwin, The Netherlands