Diesel Bombers SIGN UP NOW

National Association of Diesel Motorsports
Go Back   Diesel Bombers > Ford Powerstroke > Ford Powerstroke 99-03 7.3L
Sign in using an external account
Register Forgot Password?
Search


Registered Members don't see these ads. Register now it's free!

Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

Welcome to Diesel Bombers Forums!
Welcome to DieselBombers .com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Diesel Bombers Forums community today!


Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread
  #1  
Old 06-11-2010, 11:05 PM
Diesel Fan

   

Default 4r100 trans shifting to o/d too soon

2001 f350 with 4r100 trans shifts into o/d drive too soon.otherwise trans operation ok.could going to a 305 tire cause this?
Reply With Quote
  #2  
Old 06-12-2010, 03:23 PM
moose99ps's Avatar
Diesel Fan
Status: shooting for 500

   
View Member's Albums

Default

what is too soon? is the tire size the only change you made and now this is happening? what did you go from? i believe a 305 is like a 33? its very possible that it is causing it the shift diffrently.
Reply With Quote
  #3  
Old 06-13-2010, 12:13 AM
Diesel Fan

   

Default

can't say that it started right after the swap to the larger tires.use to shift into o/d at 80kph[50mph] or so under light throttle.know 65kph[apx.40mph]doesn't seem like much of a difference but it is noticeable.almost seems to lug but not quite.what could be done to fix this driveabilty issue?
Reply With Quote
  #4  
Old 06-13-2010, 11:10 AM
CSIPSD's Avatar
Banned
Status: loves soot!!!

   
View Member's Albums

Default

Reset your ABS module to the correct tire size will help.
Reply With Quote
  #5  
Old 06-17-2010, 03:10 AM
Kyle_KleinSS's Avatar
Diesel Enthusiast
Status: bored as hell

   
View Member's Albums

Default

How do you reset the module?

Kyle_KleinSS's Sig:Early 99 F350 7.3 PSD Diy Intake,4 in TB straight pipe, 17* HPOP CCV Mod, Foil Delete, HPX, BTS VB, Coolant Filter, Autometer Boost, Pyro, Trans, Oil & Water Temp, PHP F.U. TC Lockup, EBPV Brake, Leveled, Tru Cool 4739 sittin on 315/75/R16 Toyo Open County M/T

Reply With Quote
  #6  
Old 06-17-2010, 02:21 PM
Diesel Fan

   

Default 4r100 trans shifting into o/d too soon

checked speedo reading against my gps reading and the two are within a mile an hour .i know propably not the most accurate but all i got.so if thats the case then would the tire size chance really have an effect on the tranny shifting.surely there are more people out there with larger tires swapped on their trucks than what i put on.what are these guys experiencing?
Reply With Quote
  #7  
Old 06-17-2010, 03:13 PM
Sponsor
Status: I'm not a jerk, I just tell it like it is.

   

Default

The "problem" is that the transmission is commanded to shift at 45-50 MPH under light acceleration .

These trucks make no torque at 1300-1400 RPM which is when you are at 45 MPH in 4th gear.

Either accelerate more aggressively or use the TCS (OD off) button to hold third gear longer.
Reply With Quote
  #8  
Old 06-17-2010, 09:12 PM
Diesel Fan

   

Default

tuning o/d off is a option .but i was looking for a cause to this problem.so as you see it the change to the larger tire{effectively changing the overall gear ratio}is the cause?didn't have this issue before.a 305 tire is not that much different in size from stock to even affect the speedo reading.anyone know if there are shift kits or reprogrammers availabe to recalibrate for a higher shift available.
Reply With Quote
  #9  
Old 06-17-2010, 09:14 PM
moose99ps's Avatar
Diesel Fan
Status: shooting for 500

   
View Member's Albums

Default

are the tires wider? on the same rims? WEIGHT will make a diffrence with rolling mass as it takes MORE power to turn a bigger tire than a stock weight tire.
Reply With Quote
  #10  
Old 06-18-2010, 03:27 PM
CSIPSD's Avatar
Banned
Status: loves soot!!!

   
View Member's Albums

Default

Originally Posted by tigbench View Post
tuning o/d off is a option .but i was looking for a cause to this problem.so as you see it the change to the larger tire{effectively changing the overall gear ratio}is the cause?didn't have this issue before.a 305 tire is not that much different in size from stock to even affect the speedo reading.anyone know if there are shift kits or reprogrammers availabe to recalibrate for a higher shift available.

Auto enginuity software lets you ajust for tire size changes up to 42" tires... Works great, you can do anyones truck you want (Ford 7.3) and as many times as you want...

Plus it comes with some of the best diognostic software you can buy...


Talk to Power Hungry Performance about it, they sell it!
Reply With Quote
 
 
 
submit to reddit
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


LinkBacks (?)
LinkBack to this Thread: http://www.dieselbombers.com/ford-powerstroke-99-03-7-3l/52474-4r100-trans-shifting-o-d-too-soon.html
Posted By For Type Date
Ford 4r100 Problems - Kosmix : Reference, Videos, Images, News, Shopping and more... This thread Refback 07-06-2010 01:50 PM

 
All times are GMT -5. The time now is 12:46 AM.

Copyright And Legal Notice Links Of Interest

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.5.2
Diesel Bombers ® - All Content Protected Under Intellectual Property Rights Law of Registered Trademarks
Reg. No. 3,494,401 Cls. 100, 101 & 104 Under Int. Cl. 38
USE AT YOUR OWN RISK WE HOLD NO LIABILITY FOR ANY CONTENT RIGHT, WRONG OR INDIFFERENT

Protected by Copyscape Duplicate Content Check


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235