|
Author
|
Topic: tranny problem
|
65driver
Gearhead Posts: 209
From: Syracuse, NY
Registered: Feb 2000
|
posted 05-29-2004 11:43 PM
   
My C4 is starting to act up. After I drive a while, it seems to stutter when I move out from a stop. Sort of like manual transmission clutch chatter. Then it sort of slides into the 1-2 shift , instead of snapping the 1-2 shift like it normally does. Same thing 2-3 shift. I took it to a test and tune day today, and it shifted fine for the first 8 passes or so. Then it started the stutter thing. Trans temp gauge never went over 180. This started about a month ago. I have narrowed it down to only happening after I drive it for a while ( like on and off all day use) or if I harp on it for a while. If I just drive to work ( about 20 minutes) and it sits all day, and then drive home its fine. 2400 stall convertor, C4, in a 65 fastback, mild motor (e-brock heads, 270H cam, holley 650 , headers, 3.50 gears). Any ideas?
IP: Logged |
capri man
Gearhead Posts: 7221
From: doerun, ga.
Registered: Nov 2000
|
posted 05-30-2004 10:12 AM
how long since you changed the filter. the 700-r4 in my suburban was doing the same thing. an old trans man told me to change the filter and it fixed it. his theory was that the filter was about stopped up and as i ran it, more stuff got in it. then as it set and cooled off, some of the stuff turned loose and fell back into the pan thus making it work ok till it got hot again. DISCLAIMER: i know absolutly nothing about auto transmossions!!! ------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.33 @92mph 1/8
1.54 60 ft. http://www.angelfire.com/ny5/billswebsite/pg06.html
IP: Logged |
65driver
Gearhead Posts: 209
From: Syracuse, NY
Registered: Feb 2000
|
posted 05-30-2004 09:14 PM
An update:
Drained the fluid - looked very dark, almost black. Drained the converter. My drain plug has one of those magnetic prongs on it, and it was loaded up with stuff. About the look, color, and consistency of anti-seize compound - gray, smooth, almost like a clay. Dropped the pan, and it had like a fine silt in the bottom. Cleaned the screen, buttoned it up, reloaded with fresh fluid. Any ideas on whats up?
IP: Logged |
capri man
Gearhead Posts: 7221
From: doerun, ga.
Registered: Nov 2000
|
posted 05-30-2004 10:00 PM
i think the silt is from the clutches, not always a bad thing. you get some from normal wear. did it work???------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.33 @92mph 1/8
1.54 60 ft. http://www.angelfire.com/ny5/billswebsite/pg06.html
IP: Logged |
65driver
Gearhead Posts: 209
From: Syracuse, NY
Registered: Feb 2000
|
posted 05-30-2004 10:36 PM
Took it for a short spin. Everything seemed ok. Only a longer drive, and some harder driving will tell. I'll post results. Thanks.
IP: Logged |
clevelandstyle
Gearhead Posts: 1189
From: Connersville, IN
Registered: Jul 2001
|
posted 05-30-2004 11:08 PM
The dark fluid is an indication that it has been burned. Your trans has been slipping the clutches, obviously, and has been overheated. The fact that you changed fluid may get you by for a little longer, but I'm guessing that you are looking at an overhaul soon. It would also be a good idea to put a trans cooler on it.------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, best time to date is 10.50 @ 125mph [This message has been edited by clevelandstyle (edited 05-30-2004).]
IP: Logged |
Moneymaker
Administrator Posts: 26811
From: Lyons, IL, USA
Registered: May 99
|
posted 05-30-2004 11:54 PM
10-4------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
IP: Logged |
65driver
Gearhead Posts: 209
From: Syracuse, NY
Registered: Feb 2000
|
posted 05-31-2004 10:58 AM
Any recommendations on a trans cooler?
IP: Logged |
clevelandstyle
Gearhead Posts: 1189
From: Connersville, IN
Registered: Jul 2001
|
posted 05-31-2004 11:04 AM
quote:
Originally posted by 65driver:
Any recommendations on a trans cooler?
I like big!  ------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, best time to date is 10.50 @ 125mph
IP: Logged |
65driver
Gearhead Posts: 209
From: Syracuse, NY
Registered: Feb 2000
|
posted 06-16-2004 10:43 PM
Well, the trans s**t the bed. No moevment at all now. My fault for not running a cooler. Looking at a rebuild or a buddy has a C4 from Performance Automatic that is 1 year old that he will sell me. Are they any good? Should I have the convertor looked at, because it definetly overheated the tranny?
IP: Logged |
bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
|
posted 06-17-2004 11:23 AM
Sorry to hear about your tranny. Saw a friend go through the same thing with his 350T behind a 3000 stall. That is one thing about running a high stall on the street that most people forget to mention. It's very hard on the tranny. A HD cooler will be definately help but tranny needs to be setup to accomodate the higher stall speeds. I'll keep my stick shift on the street thank you! ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank, rods and girdle, TFS alum. heads, Stealth 8020 intake, Xtreme 268 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)daily driver!
DanH
IP: Logged |
Mustangsandmore Forums
