Before i can put my car into drive, i have to put it into low gear. and then when i drive over 25 mph i can shift it into drive. and when i stop at a stop sign or light, i have to shift into low and then when i go pass 25 after that i have to shift into drive. it stalls as well. i have no idea what is wrong!
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Need to know what transfer case it has. Most t-cases have synchronized gearing...meaning shift on the fly. A quick test is drive at less than 5 mph, and shift, no gear clash means you have synchros. ****This is only from 2wd to 4 high. 4 low you MUST be stopped(doesn't matter what gear its in).****
Turn the electronic transfer
case from "2WD" to "4WD Lock" to engage the high range 4WD, if the dodge
truck is equipped with an electronic transfer case; otherwise, shift
the transfer case lever from "2H" to "4H." The electronic transfer case
is located on the instrument panel and is marked with "2WD," "4WD Lock"
and 4WD Low." The lever-equipped transfer case is located to the right
of your leg and is marked with "2H," "4H" and "4L."
Shift the transmission into
"Neutral" while the vehicle is either stopped or rolling at 2 to 3 mph
to begin engaging in the low range 4WD. Turn the electronic transfer
case to "4WD Low," if the Dodge truck is equipped with an electronic
transfer case; otherwise, shift the transfer case lever from "2H" or
"4H" to "4L."
Tips & Warnings
Indicator lights will come on and alert you that your vehicle is in either the high or low range of 4WD.
Do not engage in the low range of 4WD drive if the transmission is in gear; you must shift to "Neutral" first.
trucks allow you to shift from 2-wheel drive to the high range of 4WD
at up to 55 mph--consult your truck's manual to ensure that this is
possible. Do not exceed 55 mph while engaged in the high range of 4WD.
Do not exceed 25 mph while engaged in the low range of 4WD.
Do not engage in 4WD unless you are on slipper or rocky roads.
Sounds like the low one way clutch is bad. The trans will need rebuilt or replaced. After you get some speed in low1 like to 15 mph, shift to low 2, then at 25-28 shift to drive, then at 42-45 shift to overdrive. Will the trans hit all the gears when you do it this way?
Are you sure the trans is in 3rd. Pull the stick into low gear accelerate shift to 2nd about 20 mph shift to 3rd about 35 mph then 4th about 50 mph. This will let me know how to go further with your problem. If you do this proceedure write the results on this Great FixYa Page!
Sounds like you may have accidentally removed the vacuum line to the modulator valve on the back of the transmission. (worst case, the headers may have burned through the hose, but either way, this is more than likely the problem. Hope this helps Chris.