Firstgenfanatic

Yup, the plug is fully installed/seated. Is the solenoid something that commonly fails or wears out?

wannadiesel

It's not impossible for it to fail. Ohm it out and see if it's open or shorted.

Yreka

I'm in the same boat.. No OD, shorting orange to ground does squat, and I get 30ohms through the solenoid..

It's been too %*$#* hot outside to do much else with it.

Firstgenfanatic

I have not tried to do a continuity test on the solenoid yet.........that will be something I'll try next. I read another thread about a guy who experienced the same issue and found the wires to be pinched/grounded between the valve body. I hope it is something simple.

I heard that a transmission shop is the only way to get a new one? True?

hmknight

I had a similar problem with my 92's auto transmission when I first bought it, and I seem to remember getting the solenoid through NAPA. Here it is. Good luck, hope it turns out to be something simple.

Firstgenfanatic

Thanks!!! Your link to the new solenoid was a big help. Glad to know I can get it locally, if needed.

superdodge

i cut both wires.

i didn't realize the blue was supposed to be the hot one.

i wired the orange wire to the downstream side of my cigarette lighter fuse so i have an ignition switched and fused power supply (to orange).

ran the blue wire to a rubber covered sealed toggle with 2 pigtails coming out of it, mounted at the base of the shift lever **** with a stainless hose clamp, and from there to a ground on the firewall.

i have been driving it a bit now and kick myself for not doing this sooner.

i wouldn't bother with the later model shifter because i doubt it would be as handy as the setup is right now.

flick of the thumb (forward) into o/d, flick of the forefinger (back) out of o/d, with your hand comfortably resting on the shift lever.

the rubber boot on the toggle keeps it from slipping around on the lever.



Bob

ofelas

Easiest way to do this is to run pin 55 to ground.

Kriss

so im trying this,

i tested hot at the blue wire when ignition is ON, ground at the orange wire.
So if i probe both at the connector i got 12v. Is that normal??
i dont realy get it. its like it is already supplying 12v to the solenoid .

NJTman

Well. It says specifically in this thread on the previous posts that when you turn your ignition key to on, The blue wire is hot. All out trucks have 12v electrical systems. Just curious, What voltage were you expecting?

The trans solenoid gets power anytime the ignition switch is on, and the pcm sends or connects ground through the,orange wire when the speed sensor indicates the truck is moving over 35mph, and the trans is in 3rd gear.

You are manually bypassing the pcm function by artificially creating ground to the orange wire, and if the solenoid is good, and the trans is functioning properly, it should go into 4th when you're driving, the truck gets into 3rd on its own, you're moving over 35mph, and you flip your new switch in the cab. If nothing happens, you either have a bad OD solenoid, or a functional defect in the trans.

Kriss

thanks for the answers but its seems you didn't get the question right.

If i probe both wire with a voltmeter i get full juice ( voltage is not the question, we all know...).
So my orange wire seems to be grounded by default.
i get like 30ohm between orange wire and the truck's frame...
I guess my solenoid is also toasted.
**** i hate electronic.

Anybody has got a similar issue and fast cheap solution?

oliver foster

If you hate electronics in your transmissions....swap in a manual.
Then you will have no issues manually shifting into 4th gear, when you want to...

That is how I "fix" auto transmission problems.

BHD

Amen!

BHD

What happens when you hit the button on the dash. That should break the ground wire circuit to open, and zero continuity.

What is your issue, no OD or does it seem to shift from 3rd to OD too quickly?

As far as fast and cheap solution, I don't know of any.

NJTman

Much better clarification for us old folks 😊

Splice a wire into the orange, run it into thecab, to a switch, the other side to ground. Obviously, I don't,have to tell you to plug it back in.

Drive on a road, surpassing 35mph. Flip the switch. Does 4th engage? If not, solenoid is either bad, or defect internal in trans. At least at that point it provides you a starting point at which to begin.

If it works, then you'll have to explore the harness back to the com to see if its damaged, or pinched, grounding the wire somewhere.


Btw... Your Speedo is working, right?