got new tires, shifting trouble? - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 01-17-2010
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got new tires, shifting trouble?

ok i have a 2001 ranger xlt (3.0 2wd) and i got 31's and i know it hurts your mpg but my engine wont shift right anymore, its holds out the rpms longer.

can i take it somewhere and have the computer checked or programmed or is it just the gears in the rear end?
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Old 01-17-2010
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when you get new tires, its going to throw off your speedometer also. when i got mine on i noticed that too, i think its just because of the new meats. threw it of 5mph so when im going 50, im really going 55. i think you can take it to a dealer ship and pay an arm and a leg or get a programmer that can fix your speedometer and think will help with shifting also.
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Old 01-18-2010
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Another reason why not to get an auto. Manual all the way.
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Old 01-18-2010
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Another reason why not to get an auto. Manual all the way.
x2
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Old 01-18-2010
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i know i wanted a manual but this is all i could find in my price range and its not a bad truck...could i borrow some ones programmer? lol
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Old 01-18-2010
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i know i wanted a manual but this is all i could find in my price range and its not a bad truck...could i borrow some ones programmer? lol
The programmers don't work like that.
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Old 01-22-2010
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do they have to stay plugged in all the time?
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Old 01-22-2010
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If you take it to a dealership they can change the tire size so the speedo will read correctly. Don't think it'll change anything with shift points though.
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Old 01-22-2010
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Originally Posted by Toms994x4 View Post
If you take it to a dealership they can change the tire size so the speedo will read correctly. Don't think it'll change anything with shift points though.
A dealership can change both, and I was charged $40.
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Old 01-22-2010
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A dealership can change both, and I was charged $40.
really? ****, im planning on staying with 31s so wouldnt mind paying that. my speedometer is off by 5(shows 50 but im really going 55)
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Old 01-22-2010
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really? ****, im planning on staying with 31s so wouldnt mind paying that. my speedometer is off by 5(shows 50 but im really going 55)
I thought it would be expensive too, but I checked for the heck of it and I'm glad I did.
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Old 01-22-2010
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A dealership can change both, and I was charged $40.
There you go then! Funny how Superlift sells that damn module that will correct your speedo for like $200+ and you can have it done at the dealership for a fraction of that.
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Old 01-22-2010
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I thought it would be expensive too, but I checked for the heck of it and I'm glad I did.
i mean, it still is kind of pricey if you think about it just for some simple programming. seems like they may just plug it in and over right the code or something. but if your planning on keeping the trend of that tire when you eventually buy new ones, its well worth it IMO.
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  #14  
Old 01-22-2010
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If you can think of it as a length issue instead of a size issue the you can understand. The tire is traveling further to make one revolution and the trans is still turning as if it had the size of tire it was programmed for. All trans shifting in 4 or 5 speed automatics is computer controlled. You should get it in to have the program reset for the higher tires. There is a plus one minus one factor with wheel size versus tire height. The taller the rim the shorter the tire has to be to keep the geometry similar. Your odometer reading will be off as well, you maybe adding miles to your actual milage. Its close to rocket science when you sit down and think about it!!!!
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Old 01-23-2010
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i mean, it still is kind of pricey if you think about it just for some simple programming. seems like they may just plug it in and over right the code or something. but if your planning on keeping the trend of that tire when you eventually buy new ones, its well worth it IMO.
They hook up a scan tool and do it. It's not pricey by any means. Someone has to get paid for doing it.
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Old 01-23-2010
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They hook up a scan tool and do it. It's not pricey by any means. Someone has to get paid for doing it.
Also someone has to buy the diagnostic tool as well. Those things are stupidly priced
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  #17  
Old 01-31-2010
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i might try this, will it make my mpg a little better since it will shift sooner?
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  #18  
Old 02-01-2010
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Another reason why not to get an auto. Manual all the way.
Oh yeah!!!
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  #19  
Old 02-01-2010
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Originally Posted by coleary15 View Post
i might try this, will it make my mpg a little better since it will shift sooner?
it will give you about 100 mph.

j/k it wont change it just give you the real number cause the speedo is fixed
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Old 02-01-2010
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Originally Posted by coleary15 View Post
ok i have a 2001 ranger xlt (3.0 2wd) and i got 31's and i know it hurts your mpg but my engine wont shift right anymore, its holds out the rpms longer.

can i take it somewhere and have the computer checked or programmed or is it just the gears in the rear end?
What was the stock tire size and what gears do you have?
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  #21  
Old 02-02-2010
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i have no clue, where can i look to find out?
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Old 02-03-2010
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well i ended up not doing this. i called all the fords in my town, and all want to charge 80 plus....
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Old 02-03-2010
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A dealership can change both, and I was charged $40.
For once the dealership is cheaper lol
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Old 02-03-2010
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For once the dealership is cheaper lol
not true, well at least not in el paso.
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  #25  
Old 02-03-2010
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Here dealership prices are insane for everything
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