Transmission issue 4R100 - loss of forward gears - Diesel Forum - TheDieselStop.com
Ford Diesel Forum / Powerstroke Forum
Ford Diesel Forum / Powerstroke Forum
Go Back   Diesel Forum - TheDieselStop.com > 1999-2007 Ford Super Duties > 99 & up 7.3L Power Stroke Engine and Drivetrain

99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

TheDieselstop.com is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 06-11-2007, 12:02 PM   #1 (permalink)
Junior Member
 
Join Date: Sep 2006
Posts: 4
My Photos: (0)
Feedback Score: 0 reviews
Transmission issue 4R100 - loss of forward gears

I've recently had a couple issues with losing all of my forward gears. My truck has 99,000 miles and I haven't had any problems with the tranny until a couple of weeks ago. After backing a small motorcycle trailer into my drive and then attempting to put it in a forward gear I lost all forward gears. It was like my truck was still in neutral when I would shift thru P, 2, & 1st. I still had reverse though. I let it sit overnight and the next morning all was fine. Took it to my local tranny shop the next day and they couldn't find anything wrong with it...no codes, fluid was fine, and nothing unusual in the pan. Picked it up and drove it about a week and the EXACT same thing happened this weekend backing my trailer into my drive. The problem appears to occur only after backing my truck up any significant distance which I didn't discover until it happened the 2nd time in the exact same situation. Currently I have very little forward movement when I put it into any forward gear and it feels like it's bumping in and out of a forward gear at idle speed. As soon as I give it any throttle it feels like it's just in neutral - not necessarily like it's slipping. I've monitored the temps the entire time and nothing unusual and the fluid still looks and smells fine even after attempting to get it to move forward for quite a while.

Anyone had any issues like this? How can it go from working perfectly fine to having nothing at all in forward without any symptoms prior to it happening? Any help would really be appreciated before I go spend $4K on a new tranny.
__________________
2001 Ford F250 Super Duty CC 7.3L 4X4 SB, auto, 3:73 rear, Isspro gauges, SCMT, 4" MagnaFlow SS exhaust, AFE Intake, 3" Superlift lift, 325/60/18 ProComp Xtreme AT, Diamo 17 Karat Wheels, ProComp MX6 Shocks.
brandong is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 06-11-2007, 01:50 PM   #2 (permalink)
Senior Member
 
FionaThe02PSD's Avatar
 
Join Date: Sep 2005
Location: Phoenix, Arizona
Posts: 1,322
My Photos: (12)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

I'm not a tranny expert but you might reseach the "Mechanical diode" which your trans has. I've heard of others having an issue in the same situation. Is it puking trans fluid?
__________________
2006 Dark Slate F350 CC LB 6X6 Lariat Tow Boss Complete with training wheels.
Vegetarian, an old indian word for bad hunter!
K&N Intake, Coolant filter, Recon smoked LED litght: tail, Clearance, Center bumper, 3rd brake, Fat fender, Pressure pro TPMS, Firestone air bags, Alpine/Infinity/Polk sound system, Autometer Phantom EGT,Trans,Boost gauges above the rearview mirror.



For the BEST in performance parts and accessories ITP Diesel
Arizona Powerstroke Group
FionaThe02PSD is offline   Reply With Quote Quick reply to this message
Old 06-11-2007, 01:51 PM   #3 (permalink)
Senior Member
 
Join Date: Sep 2005
Posts: 530
My Photos: (0)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

when did they get rid of the diode?
__________________
02 F250 PSD 7.3L
Cobra 29 NW ST CB radio
5% tint everywhere with 20% down the whole front windshield

Tymer intake setup
4 inch DP to a 5 inch straight pipe
Air Bag w\ compressor setup
triple gauge pod w\ Di-Pricol Optix (EGT,Boost,tranny temp)
CCV Mod, In-tank mod, Harpoon mod, Airdog Kit, AIH Delete
ITP regulated Return (8LL replaced with AD)
Oilguard Bypass Oil System
Dieselsite Coolant Filter, Fluidampr
ITP boost Annihilator, BTS Trans and T.C.
DP tuner 6 position, ATS housing
02Powerstroke is offline   Reply With Quote Quick reply to this message
Old 06-11-2007, 01:59 PM   #4 (permalink)
Junior Member
 
Join Date: Sep 2006
Posts: 4
My Photos: (0)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

I've read up some on the TSB that ford issued regarding the mechanical diode in certain transmissions in 2001 - it talked about related diagnostic trouble codes associated with it and none of these have shown up on mine. The build date for those with the mech. diode is between 7/27/00 and 3/23/01. How can I tell when my tranny was built?

I haven't loss any fluid that I'm aware of - none on my driveway and the dipstick still shows it being full.
__________________
2001 Ford F250 Super Duty CC 7.3L 4X4 SB, auto, 3:73 rear, Isspro gauges, SCMT, 4" MagnaFlow SS exhaust, AFE Intake, 3" Superlift lift, 325/60/18 ProComp Xtreme AT, Diamo 17 Karat Wheels, ProComp MX6 Shocks.
brandong is offline   Reply With Quote Quick reply to this message
Old 06-11-2007, 05:46 PM   #5 (permalink)
Senior Member
 
FionaThe02PSD's Avatar
 
Join Date: Sep 2005
Location: Phoenix, Arizona
Posts: 1,322
My Photos: (12)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

Hmm. Good info on the build dates!

What part of the country are you in?
__________________
2006 Dark Slate F350 CC LB 6X6 Lariat Tow Boss Complete with training wheels.
Vegetarian, an old indian word for bad hunter!
K&N Intake, Coolant filter, Recon smoked LED litght: tail, Clearance, Center bumper, 3rd brake, Fat fender, Pressure pro TPMS, Firestone air bags, Alpine/Infinity/Polk sound system, Autometer Phantom EGT,Trans,Boost gauges above the rearview mirror.



For the BEST in performance parts and accessories ITP Diesel
Arizona Powerstroke Group
FionaThe02PSD is offline   Reply With Quote Quick reply to this message
Old 06-11-2007, 07:25 PM   #6 (permalink)
Senior Member
 
Join Date: Jan 2007
Location: La Vernia, Texas
Posts: 913
My Photos: (0)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

my truck was built in sept. 2000 and it was replaced in aug 2001. and now im getting a new tranny as we speak. my tranny guy is a good freind and he told me that when they replaced it they put stuff that was outdated in its own time so he was supprised on what i got out of it. im getting a tough tranny put back in. so lets be honest these trannys pre what? 2002 were not good. (auto) now im only going on personal experience dont get mad at me.
__________________
2001 f-250 7.3cc auto. 4x4,
-4'' straight pipe
-homemade intake
-gauges
-dp chip(80eco,and 120race)
-tranny rebuilt by kosub.(my towns bts)
<font color="blue">MY TRUCK</font>
<font color="blue">MY PICS
samdust is offline   Reply With Quote Quick reply to this message
Old 06-11-2007, 08:17 PM   #7 (permalink)
Junior Member
 
Join Date: Sep 2006
Posts: 4
My Photos: (0)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

I'm located in Dallas. If and when I get the news that my tranny needs rebuilt I'll be figuring a way to get one from Brian @ BTS - anyone who receives as much hype as he does on this forum sounds like it's well deserved and worth every penny. I'm definitely not giving F*RD anymore of my money for one of their's!
__________________
2001 Ford F250 Super Duty CC 7.3L 4X4 SB, auto, 3:73 rear, Isspro gauges, SCMT, 4" MagnaFlow SS exhaust, AFE Intake, 3" Superlift lift, 325/60/18 ProComp Xtreme AT, Diamo 17 Karat Wheels, ProComp MX6 Shocks.
brandong is offline   Reply With Quote Quick reply to this message
Old 06-12-2007, 09:43 AM   #8 (permalink)
Senior Member
 
aklim's Avatar
 
Join Date: Mar 2007
Location: Hartford, WI USA
Posts: 2,602
My Photos: (0)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

[ QUOTE ]
when did they get rid of the diode?

[/ QUOTE ]

Soon after they started up using it. However, there were already quite a few transmissions that went thru already.
__________________
01 Excursion 7.3L Powerstroke. Gauges with AIH Delete, AIS, CCV Mod, 4' MBRP, BTS Trans, 6.0L Trans Cooler and Intercooler, DP-Tuner F5 chip, ITP In Tank Mod and Boost Annihilator, Diesel Innovation's Regulated Fuel kit, BTS Big Oil system, GTP38R Turbo with 1.15 A/R housing and BPD Stage II AC injectors. Bilstein Shocks with U code front and A code Rear.
aklim is offline   Reply With Quote Quick reply to this message
Old 06-12-2007, 01:39 PM   #9 (permalink)
Junior Member
 
Join Date: Sep 2006
Posts: 4
My Photos: (0)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

I'm not certain that I have the correct build date of my tranny though so if anyone knows for sure how to determine the build date from the #'s on the transmission I would be interested in hearing. My transmission code is BD-1E16

From what I did find here on the forums though, if I've decifered it correctly mine was built in May of 2001 which does not fall within the dates that Ford used the mechanical diode.....so I guess I can pretty much rule out that being the cause.
__________________
2001 Ford F250 Super Duty CC 7.3L 4X4 SB, auto, 3:73 rear, Isspro gauges, SCMT, 4" MagnaFlow SS exhaust, AFE Intake, 3" Superlift lift, 325/60/18 ProComp Xtreme AT, Diamo 17 Karat Wheels, ProComp MX6 Shocks.
brandong is offline   Reply With Quote Quick reply to this message
Old 06-12-2007, 01:46 PM   #10 (permalink)
Senior Member
 
Pappy19's Avatar
 
Join Date: May 2003
Location: Garden Valley, Idaho
Posts: 5,603
My Photos: (6)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

[ QUOTE ]
I'm located in Dallas. If and when I get the news that my tranny needs rebuilt I'll be figuring a way to get one from Brian @ BTS - anyone who receives as much hype as he does on this forum sounds like it's well deserved and worth every penny. I'm definitely not giving F*RD anymore of my money for one of their's!

[/ QUOTE ]


Regardless, you'll have to get rid of your SCMT as that was the probable cause of your tranny demise in the first place. Too much line pressure and on any good rebuild, be it BTS or Suncoast, they come with a high line pressure, so if you add the SCMT additional pressure, your tranny won't last long anyway. Better look at a DP Tuner, no additional tranny line pressure.
__________________
2002 F-350 SRW Lariat,4X4, PSD with too many goodies to list. 182k and a very strong 7.3. SOLD
2008 F-250, SC Lariat, 4X4,Shortbed, Pueblo Gold/black, V-10, 4.10, auto, Delivered on 9/7/07, great looking rig. South Texas bumpers front/rear, Air Raid Intake System, Diablosport Predator, Magnaflow, Husky's, JJ's, Ford alarm/remote start, Marathon seat covers, Sirius, PIAA, Access cover, Weatherguard tool box, Rhino liner, Michelins, Duraflap mud flaps, Escort 9500i, MagHytec rear dif cover.
2007 Lincoln LT (wifer's grocery getter),Superchip,Magnaflow duels, K&N dropin, Leer Browning Special
1996 Ford Bronco EB; almost stock
2007 Kubota 900 RTV diesel with goodies.
pappy's truck
Pappy19 is offline   Reply With Quote Quick reply to this message
Old 06-14-2007, 10:19 PM   #11 (permalink)
Senior Member
 
Join Date: Oct 2000
Location: Great State of Texas
Posts: 967
My Photos: (0)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

Hate to hear about your tranny problems. That's a real bizzzatch, and costly.

But look on the bright side: Now you can have a friend tow you up to Arkansas and get a BTS tranny that will last forever!
__________________
Tailgate
1) 2000 Excursion PSD Ltd, 4x2, Dark Green, DP Tuner, Autometer gauges, AIS w/ Zoodad, ITP HP/X, Walker BTM, Dahl 100, Coolant Filter, 203 Tstat, Billet Tstat Housing, AIH delete, Hellwig swaybar, KYB shocks, Amsoil Bypass / fluids, Hutch Mod
2) 2000 Excursion PSD Ltd, 4x2, Chestnut, BTS Tranny, DI 4-Way Chip, AutoMeter CF gauges, AFE intake, Magnaflow 4" turbo back, Wicked Wheel, HP/X Crossover, KYB shocks, Hellwig rear swaybar
3) 99.5 F250 CC SB PSD XLT, 4x2, 3.73 LS, aFe Stage 1 intake, Zoodad mod, 4" turbo back exhaust, Amsoil
Tailgate is offline   Reply With Quote Quick reply to this message
Old 06-17-2007, 01:13 AM   #12 (permalink)
Senior Member
 
aklim's Avatar
 
Join Date: Mar 2007
Location: Hartford, WI USA
Posts: 2,602
My Photos: (0)
Feedback Score: 0 reviews
Re: Transmission issue 4R100 - loss of forward gears

[ QUOTE ]
Hate to hear about your tranny problems. That's a real bizzzatch, and costly.

But look on the bright side: Now you can have a friend tow you up to Arkansas and get a BTS tranny that will last forever!

[/ QUOTE ]

He does that and he will never leave that place. Not with any money, that is. [img]/ubbthreads/images/graemlins/biggrin.gif[/img] He will hock his liver buying things left and right. I know I would which is why I am resisting the call of that place. Anyways, he can get the trans shipped to him and have a trans shop do an R&amp;R, send the old one back in the box and be happy.
__________________
01 Excursion 7.3L Powerstroke. Gauges with AIH Delete, AIS, CCV Mod, 4' MBRP, BTS Trans, 6.0L Trans Cooler and Intercooler, DP-Tuner F5 chip, ITP In Tank Mod and Boost Annihilator, Diesel Innovation's Regulated Fuel kit, BTS Big Oil system, GTP38R Turbo with 1.15 A/R housing and BPD Stage II AC injectors. Bilstein Shocks with U code front and A code Rear.
aklim is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Diesel Forum - TheDieselStop.com > 1999-2007 Ford Super Duties > 99 & up 7.3L Power Stroke Engine and Drivetrain

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 10:47 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.