Overdrive not working

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Joined
Dec 19, 2018
Posts
34
Reaction score
24
Location
Sweden
First Name
Andreas
Truck Year
1983
Truck Model
C20
Engine Size
379
I just checked the plunge right above the solenoid and it moves easily a short 1/4 of an inch. I cross my fingers and hope the new converter will fix the problem next week. happy weekend and thanks for all your help.

Andreas
 

Matt69olds

Full Access Member
Joined
Jan 8, 2018
Posts
2,338
Reaction score
3,569
Location
Central Indiana
First Name
Matt
Truck Year
81
Truck Model
GMC 1/2 ton
Engine Size
455 Olds
That’s about all the movement you will see.

If you still have the old solenoid, drive a bb or something similar in the end of the solenoid. Reinstall the solenoid, filter, pan, fluid, etc. With the solenoid blocked with a bb the converter should be locked, as soon as it shifts to second gear.
 
Joined
Dec 19, 2018
Posts
34
Reaction score
24
Location
Sweden
First Name
Andreas
Truck Year
1983
Truck Model
C20
Engine Size
379
I'm on my way to take down the transmission already, new converter arrives Monday. let see. I will report the result.
 
Joined
Dec 19, 2018
Posts
34
Reaction score
24
Location
Sweden
First Name
Andreas
Truck Year
1983
Truck Model
C20
Engine Size
379
Happy Monday. A rebuilt converter was what needed. My TCC are there again. So nice, take of with the camper tomorrow!
 

Attachments

  • My rig.jpg
    My rig.jpg
    454.3 KB · Views: 32

mibars

Full Access Member
Joined
May 13, 2023
Posts
206
Reaction score
355
Location
Nadarzyn, Poland
First Name
Michal
Truck Year
1990
Truck Model
Suburban V1500
Engine Size
350 TBI
Great to hear that! After watching tons of vids from Precision Transmission on how the 700R4/4L60/4L60E works I know that a gasket on the input shaft may be a cause of TCC not engaging. When it flattens it does not allow pressure to build up and the TC clutch may burn up.
 
Joined
Dec 19, 2018
Posts
34
Reaction score
24
Location
Sweden
First Name
Andreas
Truck Year
1983
Truck Model
C20
Engine Size
379
Interesting. That little o-ring was as you say very flat. So the "sad" thing can be, it was that ring, not the converter. But Im still happy.
 

Latest posts

Forum statistics

Threads
41,850
Posts
903,462
Members
33,362
Latest member
Dhatch84
Top