C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

anyone know what this is

Thread Tools
 
Search this Thread
 
Old May 17, 2022 | 06:09 PM
  #1  
brileavi's Avatar
brileavi
Thread Starter
Instructor
10 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: May 2014
Posts: 193
Likes: 46
From: Barre MA
Default anyone know what this is

1971 coupe Found this plug on the right hand side fender well tucked down low thanks in advance.


Reply
Old May 17, 2022 | 06:34 PM
  #2  
calwldlife's Avatar
calwldlife
Team Owner
15 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
Default

automatic trans?

could be vacuum advance limiter solenoid wire plug.
right side=passenger?

I forget the "system" name but,
for smog the dist vacuum advance is limited until car is in 3rd gear.
A smog device/s system.
Reply
Old May 17, 2022 | 07:14 PM
  #3  
brileavi's Avatar
brileavi
Thread Starter
Instructor
10 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: May 2014
Posts: 193
Likes: 46
From: Barre MA
Default

4 speed trans
Reply
Old May 17, 2022 | 07:41 PM
  #4  
calwldlife's Avatar
calwldlife
Team Owner
15 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
Default

OK, I think they had it also.
Trace the vacuum line from distributor and see where it goes.
By now I suspect that power robbing smog system has been removed.
Reply
Old May 17, 2022 | 08:01 PM
  #5  
ralphspears's Avatar
ralphspears
Banned Scam/Spammer
 
Joined: Nov 2011
Posts: 2,966
Likes: 991
From: MA
Default

It plugs into a temperature sending unit on the cylinder head between the 2 rear spark plugs there is a round hole in the chrome spark plug shield it goes in there, It is for the transmission controlled spark solenoid
Reply
Old May 17, 2022 | 08:10 PM
  #6  
19LEW71's Avatar
19LEW71
Racer
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2006
Posts: 313
Likes: 3
From: North of Boston Ma
Default

Plugs into the two spade Temp sender part of CEC its located in the RH head
check this link and particularly our friend ALAN 71
https://www.corvetteforum.com/forums...-question.html
Reply
Old May 17, 2022 | 08:25 PM
  #7  
brileavi's Avatar
brileavi
Thread Starter
Instructor
10 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: May 2014
Posts: 193
Likes: 46
From: Barre MA
Default

thank you seems to run good with out it plugged in I will just leave it disconnected.




Originally Posted by 19LEW71
Plugs into the two spade Temp sender part of CEC its located in the RH head
check this link and particularly our friend ALAN 71
https://www.corvetteforum.com/forums...-question.html
Reply
Old May 17, 2022 | 09:10 PM
  #8  
calwldlife's Avatar
calwldlife
Team Owner
15 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
Default

yes, trans control spark system
TCS
Reply

Get notified of new replies

To anyone know what this is

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo




All times are GMT -4. The time now is 03:46 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE