1990 Chevy Lumina throttle valve "TV" cable

Tiny
GINO82109
  • MEMBER
  • 1990 CHEVROLET LUMINA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 100,000 MILES
Where is the TV cable located and how do you replace it my lumina euro is having hard shifts and hopefully this will be a fix to the problem any suggestions?
Do you
have the same problem?
Yes
No
Saturday, September 25th, 2010 AT 6:23 PM

3 Replies

Tiny
KHLOW2008
  • EXPERT
Hi Gino82109,

Thank you for the donation.

I am not sure which engine variant you have and replacement requires the oil pan to be dropped. It leads from the accelerator throttle linkage to the transmission.

Before you replace the cable , check that it is not binding nor broken and perform adjustment first. An out of adjustment TV cable can cause harsh or erratic shifting.

Here are some diagrams for you to understand the system.


http://www.2carpros.com/forum/automotive_pictures/192750_TVCable90LuminaFig01_1.jpg



http://www.2carpros.com/forum/automotive_pictures/192750_TVCable90LuminaFig02_1.jpg



http://www.2carpros.com/forum/automotive_pictures/192750_TVCable90LuminaFig03_1.jpg

Was this
answer
helpful?
Yes
No
Saturday, September 25th, 2010 AT 10:15 PM
Tiny
GINO82109
  • MEMBER
Thanks for the response you guys are awesome. Do u have the diagrams for a 3.1 liter motor the model I have is the 4 door 1990 Lumina Euro 3.1 with Automatic Trans. And also I am trying to replace the modulator valve but I cant seem to find any imformation on it can you send the diagram for that too and any suggestions you may have? Thanks so much I tell all my friends about yalls site yalls information saves me $$ at the mechanic. How do you get those diagrams?
Was this
answer
helpful?
Yes
No
Sunday, September 26th, 2010 AT 9:57 AM
Tiny
KHLOW2008
  • EXPERT
Use the 3rd diagram for adjustment.

1. Engine must be off. Depress metal readjust tab on cable adjuster (located at cable support bracket on engine) and hold it in this position.

2. Move cable housing slider (away from throttle lever) until it stops and is completely against fitting. Release readjust tab. See Fig. 3 .

3. Rotate throttle lever (by hand) to its full throttle position. Slider must move (ratchet) toward lever when lever is rotated to its full throttle position. Check cable for sticking and binding.

Diagrams are found in Mitchell1, an online data provider.

There are a few types of transmission used and I would need the trans model to get the correct information.


http://www.2carpros.com/forum/automotive_pictures/192750_TranIden90LuminaFig01_1.jpg



For the diagram shown, the modulator valve is where the vacumn gauge is attached, it is blocked from view. There should be a vacumn hose attached to it.

Before replacing the modulator, test it for vacumn leakages to ensure the diaphragm is good.
Was this
answer
helpful?
Yes
No
Sunday, September 26th, 2010 AT 10:26 AM

Please login or register to post a reply.

Recommended Guides