• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

A4LD Mystery (Converter lockup summer only)


gosub283

New Member
Joined
Aug 10, 2020
Messages
9
Reaction score
0
Points
1
Location
Third planet
Vehicle Year
1994
Make / Model
Ranger XLT
Transmission
Automatic
Hi All,

At 50 mph my A4LD torque converter locks just fine in Overdrive. IN THE SUMMER !!
Every winter when the temperatures drop below 34F the TC Lockup no longer works, and stays like that for the whole winter.
Then, this week, when temperatures are in the 40's it starts working again. (In Canada)
This has repeated for 2 years.

Is there a temperature sensor in the auto transmission system that controls torque converter lockup? (Maybe faulty)
And is it accessible or located outside the transmission?
I would like the TC Lockup to work in winter also.

(1994 V6 4.0L XLT 4X4 with A4Ld auto transmission)

Cheers
 


97RangerXLT

Forum Staff Member
TRS Forum Moderator
Article Contributor
TRS 20th Anniversary
TRS Event Participant
TRS 25th Anniversary
Joined
Sep 18, 2007
Messages
6,832
Reaction score
4,040
Points
113
Location
Fishers, IN
Vehicle Year
1997
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0
Transmission
Automatic
2WD / 4WD
4WD
Total Lift
2"
Tire Size
31"
my guess would be that you have a connection to the solenoid that is not doing well in the cold weather. my guess is that it is probably easy to get to as warming up the transmission/ internal temps are not affecting it, so probably a connection out in the weather under the truck. unplug it, clean the contacts, see what happens.

AJ
 

901wd#2

Member
Joined
Dec 12, 2023
Messages
54
Reaction score
20
Points
8
Location
Vermont
Vehicle Year
1989
Make / Model
Ford ranger
Transmission
Automatic
Most tc’s stay unlocked until operating temp is reached. Have you tried blocking your radiator in the winter?
 

gosub283

New Member
Joined
Aug 10, 2020
Messages
9
Reaction score
0
Points
1
Location
Third planet
Vehicle Year
1994
Make / Model
Ranger XLT
Transmission
Automatic
901wd#2,

Yes, it makes sense that there is a temperature control somewhere in the system.
Do you know if the control is located inside the trans? or under the hood somewhere?

By the way, this system does have a sizable transmission cooler, so I bet you are right about blocking the rad cooling in winter.
 

Sponsored Ad


Sponsored Ad

Members online

Today's birthdays

Member & Vendor Upgrades

For a small yearly donation, you can support this forum and receive a 'Supporting Member' banner, or become a 'Supporting Vendor' and promote your products here. Click the banner to find out how.

Truck of The Month


Mudtruggy
May Truck of The Month

Recently Featured

Want to see your truck here? Share your photos and details in the forum.

Follow TRS On Instagram

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store


Sponsored Ad


Sponsored Ad

Sponsored Ad


Amazon Deals

Top