My O/D light does not come on, and the transmission doesint shift. (3000rpm @70mph) I have a 5R55E transmission if my signature doesint suffice.
Everyone I ask says its a fuse, all fuses under hood and in cab are in good shape. and i tested all the relays under the hood.

sorry ahead-of-time if theres already this type of o/d problem thread.
but i swear couldnt find it.

thanks for any help

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2001 Ford Ranger (edge). v6-4L-EFI, auto trans (5R55E), 4x4. stock motor. stock CAI.
added: built-in inverter, explorer ohc, led floor lights, 'hidden' led bed lights, CB, 5vdc indash usb,

When is the last time you changed the transmission filter and fluid?

just about 5,000 miles ago, maybe a little more.
but i check my fluids once a week and the transmission fluid is still a beautiful red. (and at the proper level)
its been this way since i got the truck 7 months ago. there is nothing else wrong with the trans.,
iv never had a slip and it always shifts on-time and smoothly.

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2001 Ford Ranger (edge). v6-4L-EFI, auto trans (5R55E), 4x4. stock motor. stock CAI.
added: built-in inverter, explorer ohc, led floor lights, 'hidden' led bed lights, CB, 5vdc indash usb,

maybe its just me but 3K at 70 sounds normal to me...what gears do you have? i assume 4.10s and what do you mean by the o/d off light not coming on? maybe the bulb is just burned out

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2021 F150 5.0 Screw

Past:18 F150 2.7, 16 F150 5.0, 14 F150 5.0, 07 F150 5.4, 03 Ranger 4.0

Master Certified Ford Parts / Warranty Admin

Sorry for taking so long to reply, have a lot of crap going on.
I figured out that the problem was the switch on the shifter column, poped it off and put my own momentary s/w in. Looks bad, works great. Its running about 2400rpm @ 70mph now. But i still take the back roads everywhere

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2001 Ford Ranger (edge). v6-4L-EFI, auto trans (5R55E), 4x4. stock motor. stock CAI.
added: built-in inverter, explorer ohc, led floor lights, 'hidden' led bed lights, CB, 5vdc indash usb,