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strange problem with 98 f150

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Old Jan 10, 2010 | 12:25 AM
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strange problem with 98 f150

to start things off i am new to this site and i will appreciate any ideas anyone might have. my problem started the other day i was driving down the road and when i stepped on the gas it was like it was in neutral i had no gears what so ever not even in 4 wheel drive. i parked it and came back the next morning and it did the same thing so i shifted it into 4 wheel and then back out i got my gears back. i started home only to realize something was terribly wrong. to make a long story short, it feels as if my truck is stuck in 4 low . i have checked the shift motor and it is working fine i moved the transfer case into 2 high while i had it off. 4 high and 4 lo both engage and disengage normally. but it still feels as if im in 4 lo i can only get up to 35 miles per hour at about 3000rpm and then it wants to buck.my front wheels turn free in 2 wheel drive and the front drive shaft moves freely. any idea as why it still feels like it is 4low?the truck has a 4.6 with 4r70w trans. any idea or answer will be greatly appreciated. david
 
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Old Jan 10, 2010 | 06:41 AM
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The transmission is probably fried and only works in first gear. That's my guess from the limited data here.
 
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Old Jan 10, 2010 | 08:05 AM
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when i take off i can count that it is going through the gears but it seems like i am stuck in low range 4by4 but i can only get to 35mph at 3000 rpm and i know i am reaching overdrive as when i push the overdrive button it will actually shift down and the rpms will go higher. when i hit 35 mph the mottor starts bucking really bad also. david could it possibly be transmi8ssion range sensor?
 
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Old Jan 10, 2010 | 08:07 AM
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also i know its not in low range 4by 4 because i can punch it and the front tires wont spin unless i engage the 4 by 4 with the shift on the fly ****
 
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Old Jan 10, 2010 | 09:14 AM
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Mark Kovalsky
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If it is shifting to overdrive there is nothing wrong with ANYTHING on the transmission. Your problem is in the transfer case. I don't know how to troubleshoot the transfer case.
 
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