Why wont it kick down??

[CUMMINS KID]

hey guy's had this prob since i got her. everytime i mash the go pedal it stay's in OD. unless i take it out myself. and if she do kick down it's into 2nd. . tried adjusting kickdown cable and that just made it stay in gear longer and wouldent shift at all... so what is it and how can i fix it??????

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1993 LE 250 4X4 AUTO 95,000
MILES. BED RACKS. ALL STOCK ... FOR NOW... .

 

[BushWakr - RIP]

Just a thought, but have you checked your TPS to see if its reading and performing properly. TPS=Throttle Position Sensor.
FWIW.
Bush'

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93. 5 W250 4X4,HD Spring Pkg, Rancho 7000's, Rear Swaybar,Dual Shock Front Stabilizer,BD 180HP Injectors,31/2" Mandrel bent exhaust,BD16cm 'Hot End',Modest Pump Tweaks(lock collar still on)Star Wheel@3oclock/Timed @ 1. 37mm,K&N Air,Isspro Pyro (Post Turbo),Tach,transmission Temp,Auto Meter Oil Filled Boost Ga. , 3:54's, 4 Speed Auto, Clubcab, Aftermarket Reclining Buckets w/ctr Drop Down seat/console, Black over Silver, 22psi,285-65R-16's,American Racing Clear Coat Mags, Amsoil 15W-40HD Marine,12,000 lb. Warn Winch,KC Spots. 103,900 Kms (64,600 mi's). NOT A VENDOR,Just an end user

 

[Paul Herioux]

Definetely sounds like a TPS that is adjusted too low. Should be at 1 volt at idle. Have gone as high as 1. 2 volts on trucks that are loaded heavy most of the time to delay upshift into OD. Adjust to your preference.
Good Luck.

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The smiling ex-dealer technician
89 w250, 47rh trans, cleaned up exhaust, Dynomax bullet muffer, 3" lift, unknown oversized injectors