6-21-15 How to recalibrate speedometer on Ford 92-96 Bronco F series
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- Опубликовано: 15 сен 2024
- A walk through of how to recalibrate PSOM (Programmable Speedometer Odometer Module) of 92-96 F-series and Broncos when you change tire size.
Thanks for watching!
I saw another video where the guy warned that when you are ready to set the new number by hitting the reset button, DON’T press it more than once to lock it in. Each time you press “reset” to lock in the number it counts it as a recalibration and will subtract from your 6 to hours many times you hit it. I think the guy hit it several times and instead of having 5 left, he only had 2. 😮
Thank you so much.
This was super easy. Thanks for the video greatly appreciated!
Great explanation sir. Thank you for taking time to help us
Thank you so much. You the real MVP my friend.
Thats awesome info Carl I know I will be using it too. Thanks
You can disregard on my post from 6 hours ago. I took the truck out for a ride with a GPS and the speedometer is only off by the same 2.5 MPH. Apparently you can swap in any 8.8 rear end and the speedometer will read the same as the original rear end.
+Dana Palmer Hi sorry for the late reply.. yes that is correct changing ratio does not affect the speedo reading, a nice feature of this type of differential. The same is for the 10.25. The necessity of the calibration is for when you change tire size. If your reading is 2.5 MPH I suspect the tires you have are a bit larger than stock as the factory tends to make the calibration a bit on the fast side..
Thanks for watching and the comments!
I just subscribed to your channel, Great Video this will help me greatly with my speedo issues in my 95 f250 THANKS AGAIN VERY SIMPLE.FIX
Good info
wtbm123 Thanks
Happy Father's Day Terry!
Hi! Thanks for the videos - I was wondering if I could ask you a question about my 96 F150 that's hard shifting... had the speed sensor on the rear differential replaced.. mechanic says the signal is good.. but i'm still getting hard shifting - after seeing your video.. I'm thinking it could be the tires.. or the speedometer in need of calibration. Thanks!
Interesting and informative Carl,
Good to see you, happy Fathers Day !
Stay cool brother
lakesideranch Thanks Doug Happy Fathers Day to you too!
I think once you run out of tries that's it.
@@Broncocarl92 Just came across this vid. I put 265 75 17's on my 96bronco. Thanks, I believe I can get it right now.
great video
Thanks for the how to. Great info to know.
Wow, thanks, I'll give it try!
Dang, I had a 93 bronco with 35s on it. Sold it 5 years ago. Drove it with the speedo wrong the whole time. Never knew I could do this.
That's well worth knowing
Hi I have tried several times to change the CAL but it does not move. earlier if you could. it seems to be blocked. what should I do?
5:50 Gauge read out shows that you have -0- calibrations left.
7:00 The current 'Conversion Constants' is 792 with -0- calibrations left.
8:20 You locked in a new 'Conversion Constants' of 822 and it worked.
The Ford manual states "The conversion constant can only be changed six times once the vehicle leaves the factory."
Yet somehow you changed it. Did it work?
Yes it worked. I also changed it again a few years after and that one also took.
@@Broncocarl92 Thanks for replying, I did not expect that. Since your Bronco is a 1992, I am just guessing that maybe it does not display the number of remaining 'Conversion Constant' changes you have left on your PSOM, or it could be something else? My display on a 1996 reads "E 08 6", and your 1992 display shows "E 03", notice the spaces between the characters (E space space 03) vs (E space 08 space 6), this is why your video jumped out to me, it is the only display that I have seen like this displaying only two data sets and not three.
• This information is sourced from the 1996 Ford Service Manual (Section 13-01: Instrument Cluster) •
1) First character is either "E" or "o", which means, "E" English (MPH) display or "o" Overseas (KMH) display.
2) The second double digit number is the microprocessor revision level, my 1996 is "08" and your 1992 is "03".
3) The last single digit number on the right side is the reprogramming lockout counts remaining. This count shows the number of allowable conversion constants remaining. When the count is zero, no additional changes can be made to this instrument cluster. My 1996 has the full "6" available, and on your 1992 there is no display of this reprogramming lockout count number. "The conversion constant can only be changed six times once the vehicle leaves the factory".
►Side note, notice carefully the wording Ford uses, "reprogramming lockout count" and "allowable conversion constants remaining", "lockout" and "allowable" imply that Ford has set the number to "allow" only "6" changes and to "lock you out" of any additional changes after the "6". If it was a memory issue, Ford should have or would have chosen different wording.
☼ My question is, how many times have you made changes to your conversion constant?
My head hurts! LOL! Great video!
Rick Anderson Thanks buddy!
Any idea why I’m not able to change the numbers . I have it grounded directly to the negative terminal on the battery and numbers still won’t change ?
If i have 31x10.5R15 tires what number would i need to enter to get my PSOM to read properly. Im not a smart guy when it comes to math.
So how accurate did the speedo get when you added the 30 and changed it to 822?
its perfect
@@Broncocarl92 Cool, thank you, I'm about to do this tomorrow.
What yr is your truck? I found one connector on the far right side of the glove box, but it doesn't work to ground the psom. Mine is a 92 f150 is it in a different location?
Never mind judging by your name and starting the video from the beginning you have a 92 like me...So what gives my connector should be in the same area.
HAHA, went out to the truck and finally found it, some idiot had tucked the connector up behind the wiring harness, it took me a min to find it, the 92 does indeed have the blue wire. Thanks for the video bro.
great video, thanks for the info.
Hi there i liked the video how can i calabrate my 93 f 150 its a v6
Broncocarl92
i have f150 1996 4wd the tire is 35x12.50 R20 how to calibrate this number to my speedometer help pls,
I could really use some help with this I'm in Canada mine is all metric I have o 08 6 with a 984 cal with lt245/75r16 it's a 7.3 4x4 XLT stock diff 1996
how could you get it to go UP when pressing reset ,mine the numbers go down ,,,thanks
bigdan911 you go around to get to a higher number
Help!! I am trying to calibrate my bronco for 35's, it lets me get to the part with the 972 number but when I try to press select to change the factor nothing happens!!
Are you sure you applied ground to the correct wire?
@@Broncocarl92 nvm it was just the ground wire
Were can i get the correction factor
Any chance you know the calibration number for 96 f150 35x12.50x15?
use the example in the video, it's for a 35 inch tire.
I need to know how to calibrate the odometer on my 07 F250. Can you help with that?
Danny Bright Sorry I don't have any experience with that model. I'm gathering that its probably a dealer thing
I am using the original size tires and changed my 8.8 axle from a 3.55 axle to a 2.73. I finished up the swap yesterday and haven't drove it yet. Do you know how to calculate the factor with an axle swap? I'm thinking you would use the drive shaft revs/mile. Also my speedometer has read about 2.5 MPH slow since I have had the truck. Do you know how to compensate for that too? BTW, very good video, thanks.
I know this is a 6 year old comment but I thought I'd respond anyway. The final gear ratio change you did wouldn't have any effect on the PSOM calibration number because the tone ring on the differential carrier rotates 1:1 with the tire rotation regardless of final drive ratio. The calibration number on the PSOM only needs to be changed if you are switching to a tire with a different outside diameter than what your PSOM is cal'd for.
cool man.
i need help.
96 Bronco 351W Monster trans 35's w 6" rough country lift and 4:56 gears.
I did the recal just like you did.
that worked perfectly.
now where i need help.
prior to recal i was 972CAL the math adds up to stock tires.
i had ton of power & torque before
after recal its a dog. i don't get it.
speedo is Dead ON. no power
fixit fixit fixit
Eddie Hartman no power all around or at what speed?
Broncocarl92 before i had Neck jerking torque. now i slowly get up to speed. all around lack of Power
i bought her with the lift and 35 inch tires already on.
the only "mod" is the recallibration
Eddie Hartman did you try putting it back to the 972 Cal?
Broncocarl92 i started at 777 that didn't feel right and then went to 807 that was dead on. I'm to understand you have a limited amount of changes
will the 822 work on a 1994 f150 with 35x12.5x15?
thanks
yes that is the example in the video and tires are 35 inch.
Can I pay you to figure out my tire calibration
I have a 1995 f150 2wd, with AODE, and I want to do this to my truck. I plan on putting 33s on the stock wheels. Does this take place of re gearing the rear end? I heard this calibration adjusts the shift point of the transmission. Thanks b
Gabriel Bray Correcting the speedometer will help the transmission shift correctly. It's not a band-aid for putting the proper gears in the truck however. What gear ratio are you running currently?
Broncocarl92 I really don’t know. I would have to guess stock ratio, whatever that is.
the axle code is on the VIN sticker on the driver door pillar
Broncocarl92 it says 17 under axle
According to this site you have a 3.31 which might be a bit high for 33's (lot's of toggling in/out of OD). If you can find a 3.73 (or 4.10 is better) the truck will not suffer major performance loss with 33's. See www.drivetrain.com/Fordtrkratio_posidata.html
how can i calibrate my 88 ford bronco? it is not digital?
+Milton Monterrosa It's a mechanical speedometer, you would need to change the gear(s) at the transmission or get a calibration box to go between the cable and speedo.
Thanks for watching.
Cool
Lol I did mine and now it reads well over 100 mph. Anybody feel like racing there 250s?