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Mar 12, 2008 | 09:36 PM

#16

alext33

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i pulled sum codes and here is wat i got in engine running 126, 312, 412, 536, 538, 632 an d not running,. 121, 331, 33

Mar 13, 2008 | 12:39 AM

#17

alext33

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so i drove my bronco. at55= 1500 rpms(overdrive on) overdrive off 2200.

Mar 13, 2008 | 04:41 AM

#18

b4hntn

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From: Longview, TX

Here are code charts. Did you use a code reader?
http://fordfuelinjection.com/

Your speedometer can be recalibrated up to six times in the life of the vehicle. You say yours is off which is not surprising with the large tires. Trying to determine the gear ratio by reading the RPMs at certain MPH may not be accurate unless the speedometer is accurate. Using Interstate mile markers and a watch vary your speed until you drive a mile every sixty seconds for several miles. Then read your RPM and MPH to report back here.

Mar 13, 2008 | 08:37 AM

#19

Kemicalburns

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From: Bend,OR

fordfuelinjection.com should have info on what those codes are. your haynes manual should also have that info or a quick search on the web as well i would think.

Mar 14, 2008 | 06:22 PM

#20

alext33

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how do i recalibrate my speedometer

Mar 14, 2008 | 06:30 PM

#21

b4hntn

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From: Longview, TX

Here is how I did it the first try. Remember you get six times total.
Look for my name.
https://www.ford-trucks.com/forums/3...ht=speedometer

Mar 20, 2008 | 11:47 PM

#22

alext33

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im looking at a rear axle of a f250 the metal tag on it says "v122c" and "55 10 29 e16" dose any one no the gearing on that and is it good enough to push 35's
thanks

Mar 21, 2008 | 09:30 AM

#23

Kemicalburns

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From: Bend,OR

so you plan on running 2 sets of spares since the f250 rear end is 8 lug. or do you plan on converting your front end to 8 lug so it matches? your 8.8 will handle 35's. i have 35's and 4.88 gears and wheel often enough and dont have any problems. if you plan on running 37's is when you need to look into a larger differential.

alex, go into the control panel at the top of the page and fill out the signature area with info on your bronco. this way as you post and the thread gets bigger we can always see what you have now.