speedo calibration help/tuner question
#11
12-13-2010, 06:59 PM
Join Date: Oct 2010
Location: Kentucky
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Hey , thanks for the compliment 
, truth is , i have already been where your trying to go , sort of ,, i have a `97 Dakota also but only a 2 wheel drive , and i recently upped the tire/rim size to a 255/65-16 combo and started experiencing a few problems like the speedo being way off , trans shift points different , and when i would brake to stop the truck would sorta pulse/jerk like a rotor was warped ( which turns out was the abs thinking i was skidding ) , but the abs/brake never threw up a light or code . I researched alot of truck and jeep sites and found the info i previously gave to you . I changed my pinion gear from a 35 tooth to a 33 tooth and that solved my problems for the most part , !
, truth is , i have already been where your trying to go , sort of ,, i have a `97 Dakota also but only a 2 wheel drive , and i recently upped the tire/rim size to a 255/65-16 combo and started experiencing a few problems like the speedo being way off , trans shift points different , and when i would brake to stop the truck would sorta pulse/jerk like a rotor was warped ( which turns out was the abs thinking i was skidding ) , but the abs/brake never threw up a light or code . I researched alot of truck and jeep sites and found the info i previously gave to you . I changed my pinion gear from a 35 tooth to a 33 tooth and that solved my problems for the most part , !
#12
12-14-2010, 10:49 AM
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Join Date: Jul 2010
Location: Broadway , NC
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No , you should be able to reach it no problem , according to my parts manual the speedo gear assembly housing is located at the rear of the transfer case just before the driveshaft ,,, if im correct in my assumption - the 98`s and up use a sensor like the one in the rear axel for the speedo and thats why their computer`s can be flashed to correct for different tire sizes .
#13
12-18-2010, 04:26 PM
Join Date: Oct 2010
Location: Kentucky
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No , you should be able to reach it no problem , according to my parts manual the speedo gear assembly housing is located at the rear of the transfer case just before the driveshaft ,,, if im correct in my assumption - the 98`s and up use a sensor like the one in the rear axel for the speedo and thats why their computer`s can be flashed to correct for different tire sizes .