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Sensor diagnosis

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Old Jun 29, 2023 | 07:55 PM
  #1  
Freebird85's Avatar
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From: Illinois
Car: 1985 Pontiac Firebird Trans AM
Engine: 305 Small block Chevy TPI
Transmission: There
Axle/Gears: Leaking
Sensor diagnosis

Hello all, I was welding in my new floor pans and lets just say there was an accident and my car became a FIREbird but anyway it was put out but the 2 sensors on my transmission got burnt through it and nothing else I checked everything, I was wondering if someone could tell me what these 2 sensors are so I can replace them, sorry for the bad angle its a tight spot to get a camera in. if someone could tell me that would be great thankyou.
Attached Thumbnails Sensor diagnosis-image1-1-.jpeg   Sensor diagnosis-image0-5-.jpeg  
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Old Jun 29, 2023 | 08:56 PM
  #2  
stew'86MCSS396's Avatar
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From: honolulu
Car: '86MCSS
Engine: 396 .030"
Transmission: M20
Re: Sensor diagnosis

TCC and TV cable.
Some good reference pics...ignore that it's from a corvette...
https://www.thirdgen.org/forums/engi...00r4-sale.html

Last edited by stew'86MCSS396; Jun 29, 2023 at 09:19 PM.
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Old Jun 30, 2023 | 12:00 AM
  #3  
Freebird85's Avatar
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From: Illinois
Car: 1985 Pontiac Firebird Trans AM
Engine: 305 Small block Chevy TPI
Transmission: There
Axle/Gears: Leaking
Re: Sensor diagnosis

Im sorry but what does TCC and TV cable mean, im just trying to make sure I get the correct things for when I order the parts, I think I understand the TV cable but the one that looks like a sensor plug im not sure.
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Old Jun 30, 2023 | 05:08 AM
  #4  
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Car: 1989 Firebird
Re: Sensor diagnosis

Originally Posted by Freebird85
Im sorry but what does TCC and TV cable mean, im just trying to make sure I get the correct things for when I order the parts, I think I understand the TV cable but the one that looks like a sensor plug im not sure.
"TCC" means Torque Converter Clutch, and it's not a sensor, it's a simple plug/socket that brings the wires that control the TCC into the transmission.
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Old Jun 30, 2023 | 03:35 PM
  #5  
vorteciroc's Avatar
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From: 212 is up in this Bit@#
Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Sensor diagnosis

Both of those:
-Throttle-Valve Cable
-Torque-Converter Clutch Circuit

Are very important in regard to the Life of the THM700-R4 Transmission.

The T.V. Cable must be connected and adjusted correctly, otherwise the the Transmission will not have the appropriate Line-Pressure...
And the Transmission will slip, Burn-Up, and Fail.

The Torque-Converter Lock-Up Circuit must be operational to keep the Transmission from Over-Heating while Expressway Driving.
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