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Author
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Topic: c-4 troubles
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Bob Hopkins
Journeyman Posts: 85
From: BRIDGEPORT NJ USA
Registered: Jan 2001
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posted 01-12-2001 02:51 PM
   
ok guys picked up this 68 falcon wagon last milininum 289" c-4 since the cold weather,acting up sits over night takes 3-4 minutes in gear to actavate the warp, drive and move. After that works normal { other than slowest 2-3 shift} i have ever felt. changed fluid and filter screen,no debris in pan. Retorqued the intermidit band ,checked the vacumn modular ,its holds vacumn and the rod is in place, seemes to me a sticky valve in the valve body??? give me your ideas???
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SteveLaRiviere
Administrator Posts: 21832
From: Saco, Maine USA
Registered: May 99
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posted 01-12-2001 03:47 PM
I think you nailed it. Could also be a slight warpage between valve body and transmission, or leaky valve body gasket.------------------
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L Disposable Commuter
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Bob Hopkins
Journeyman Posts: 85
From: BRIDGEPORT NJ USA
Registered: Jan 2001
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posted 01-12-2001 05:20 PM
recomend a replacement street/strip valvebody??? this thing must have set some ware for awile spedo read only 71000, and looking at the bottem side I think it's close it' beautiful
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SteveLaRiviere
Administrator Posts: 21832
From: Saco, Maine USA
Registered: May 99
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posted 01-12-2001 05:22 PM
I'd just put a Trans-Go shift kit in it and give the valve body a good cleaning.------------------
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L Disposable Commuter
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TomP
Gearhead Posts: 3609
From: Delta BC Canada
Registered: Dec 99
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posted 01-12-2001 05:42 PM
I say give the automatic the heave-ho and replace it with a stick! But what little i know (and care even less) about automatics makes me think its more likely hardened seals causing it. A whole tranny overhaul with all new clutch plates and bands should probably be done if you are taking it out and apart anyways. The parts kit doesnt cost much ,tranny shops can do the rebuild in a few short hours... don't ask me why it always costs $1200 for them to do the job 
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66351stang
Gearhead Posts: 626
From: sayville,newyork
Registered: Jul 2000
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posted 01-14-2001 10:09 AM
c-4 are noted for internal seal problems when cold,car sits overnight and the seal contract allowing the fluid to pass them causing low pressure, after the trans warmes up the seals expand and the car will move.
recomend replacing seals ,at the same time replace any worn parts.just my experience over the years.------------------
ponycar66,have you flown in a ford latley???????
66-COUPE W/351SVO
glad i had a v-8 !!!!!!
84.5 gt350-61 falcon 302
have a great day!!!!!!!!
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Bob Hopkins
Journeyman Posts: 85
From: BRIDGEPORT NJ USA
Registered: Jan 2001
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posted 01-15-2001 02:20 PM
I like Tom P idea the best be a fun ride with a 5/ speed tremack, out of my budgit for now
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TomP
Gearhead Posts: 3609
From: Delta BC Canada
Registered: Dec 99
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posted 01-15-2001 03:41 PM
Bob ya dont need a 5 speed, a toploader or T10 would work fine...the C4 doesnt have an overdrive? ------------------
64 T-Boltish Fairlane 427 HR 4spd 10.05 at 133.7 so far ... arrgh ,so close!! another 64Fairlane project 428 4spd
53 F350 ramptruck 428 4spd
88 Ranger 5.0 5speed
'bout half of a 67 Mustang FB was a 390 :-(
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Moneymaker
Administrator Posts: 11493
From: Lyons, IL, USA
Registered: May 99
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posted 01-15-2001 03:51 PM
When you pull the valve body to install a shift kit inspect the unit for flatness. C-4 valve bodies have a tendancy to warp. You can block them back to life.  ------------------
Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
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Bob Hopkins
Journeyman Posts: 85
From: BRIDGEPORT NJ USA
Registered: Jan 2001
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posted 01-16-2001 08:20 AM
APPRICATE THE IDEAS, GOING TO HAVE TO GIT SOME WARMER THIS IS A DRIVEWAY CAR, THE 57 IS ON STANDS KEEPING WARM IN THE GARAGE
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Bob Hopkins
Journeyman Posts: 85
From: BRIDGEPORT NJ USA
Registered: Jan 2001
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posted 01-16-2001 11:53 AM
What is the difference between 68-69 valve body and 70 -up I find kits for 70-up
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