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Author
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Topic: C4 Shift Problem
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 03-04-2002 12:29 PM
  
I need some help on a "no shift" problem on my Morris C4. While in the burnout box it shifts manually 1-2-3,then I leave the line in 1st and shift to 2nd and there is no 2nd gear, only a false neutral.The motor revs to the moon due to no rev limiter and I let off and second gear comes back when the car slows down then I can manually shift to high.If in Drive it shifts 1-2-3 when driven slow.I tried racing it in Drive and it starts off in 1st and then hits this false neutral. The shifter is adjusted correctly and has a new cable. The trans is an '67 with a Transgo shift kit which allows manual or automatic shifts.This problem has progessively gotten worse, it used to do this only occasionally. The car has mufflers which Alex thinks race cars shouldn't have and no back seat which he thinks they should.Thanks.------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289 [This message has been edited by Just Jim (edited 03-04-2002).]
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Hemikiller
Gearhead Posts: 667
From: Killingworth, CT
Registered: Feb 2002
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posted 03-04-2002 12:51 PM
Sounds like your intermediate band is slipping. Have you tried adjusting it at all? Also, the seals on the intermediate servo could be bad, and can't apply enough holding power to the band. Either way, it's probably wise to remove it and give it a complete set of soft parts, clutches & bands.
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 03-04-2002 01:05 PM
I just went thru the trans 2 months ago with new seals,an 'H' servo 5 'blue'clutches in both clutch packs etc.It missed the 2nd shift once in awhile before I tore it down. I didn't tear into the valvebody when I freshened it up and suspect that's where the problem might be.------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 03-04-2002 01:40 PM
How is reverse?  ------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 03-04-2002 02:52 PM
It goes backwards just fine. Now you're going to tell me a race car doesn't need reverse.------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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Hemikiller
Gearhead Posts: 667
From: Killingworth, CT
Registered: Feb 2002
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posted 03-04-2002 06:14 PM
I think you may be right about the valve body. I'd investigate that for sure. All of the valves, after removing any springs, should be able to slide in their bores just under their own weight with a little
Type F on them, by tipping the body back and forth. If you find a sticky one, use a pencil magnet to shuttle it back and forth in it's bore until it is smooth and moves as above. DONT use any abrasive except MAYBE 000 steel wool or the ultra fine scothbrite pads to clean the valve. Also, there is a torque value and sequence for a C-4 on the valve body. Not following it may cause a warped body, and problems similar to yours.
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 03-04-2002 06:27 PM
Mine did this once and I sold the tranny for $75. The tranny guy that bought it, said that the band was broken and could be replaced with a "heavy duty" one pretty easily. BS
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n2oMike
Gearhead Posts: 2831
From: Spencer, WV
Registered: Jan 2001
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posted 03-04-2002 06:44 PM
Here's some excellent C4 tech...http://www.fordmuscle.com/phpBB/viewtopic.php?topic=1626&forum=1&38 Have Fun! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 03-04-2002 06:44 PM
Valve body either works or it doesn't in a C-4! The reason I asked about reverse is to try and help. You have the greatest amoutn of pressure in reverse. I would take presure readings at the ports. I'll bet you have less than 200 lbs. ------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 03-06-2002 08:39 PM
I took apart the valve body and didn't find any obvious problems.I cleaned it real good and made sure all the valves moved smoothly.With the valve body out I applied air pressure to the apply side of the intermediate servo and it seemed to function as it should.If I put it all back together and find the pressure within limits,then what? Alex,sorry you didn't see much humor in my comments,must have been the bad weather you are having in your part of the country.Right?------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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