4R44E solenoid questions


Joined
Mar 28, 2026
Messages
7
Points
1
City
Pittsburgh
State - Country
PA - USA
Vehicle Year
1995
Vehicle
Ford Ranger
Drive
4WD
Engine
3.0 V6
Transmission
Automatic
Total Lift
2"
Hello all, my recently acquired '95 Ranger SXT is proving to need all kinds of work since I got it. I'm currently into the 4R44E to replace a number of things. Quick background:

I bought the truck from a guy who said he'd just put a junkyard transmission in. I ran it up and down a county highway, got it up to about 65 and felt it shift smoothly and I believe engage lockup so I bought it. After fixing a poor running condition, I gave it its first actual around-town drive and started experiencing all kinds of shift weirdness; 2-3 flares, jumping between gears without any change to load or throttle, what felt like a random low-speed OD engagement... as I backed into my parking spot at home I saw a huge streak of fluid from about 20 feet away. Sure enough, it was pumping trans fluid out of the bellhousing. With the trans out I pulled the TC and could see the pump pushed the front seal all the way out of the pump. Why? Well the PO had "repaired" a rotted cooler line with a short section of rubber line that had kinked like a garden hose. I'm assuming once the trans got up to temp and it started routing through the cooler the pump pressures skyrocketed (not to mention trans temps).

Anyway, I found all kinds of evidence of sloppy work including a piece of gravel in the trans pan... I want to give the valve body a good cleaning and am going to throw a Transgo kit in it. I also tested the solenoids and found all shift solenoids to have proper resistance. The EPC solenoid shows 3.4 ohms and the TCC solenoid shows 9 ohms. When I went to order an EPC solenoid I see that there is the green screen and red screen versions. My '95 has a green screen (guess the jy trans came from a similar year). I can't find a green screen EPC for sale anywhere. Does anyone have a line on one? Second question, is the TCC solenoid the same throughout the years?

Also, anything else I ought to look at while I have the trans down? I have to take the rear housing off because the parking pawl is either stuck or not engaging. I was not planning on going into the trans body itself unless I have to. I figure with new solenoids, a shift kit, a good cleaning and new filter, and an unblocked cooling path (with an external cooler) I should be operational.

Thank you!
 
Oh, I also found cracked insulation on the solenoid wiring harness so I'll pick up one of those.
 

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