C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Coldstart sensor?

Thread Tools
 
Search this Thread
 
Old May 4, 2003 | 07:04 PM
  #1  
Barrier's Avatar
Barrier
Thread Starter
Drifting
20 Year Member
 
Joined: Sep 2001
Posts: 1,875
Likes: 27
From: Long Beach NY
Default Coldstart sensor?

Does an '86 have a cold start sensor. Device that would cause richer mixture or faster idle at cold start? My car seems to not want to idle at first start up. I have to play with the gas to keep it going. As soon as it's driven a bit it's fine.
Barrier
:confused:
Reply
Old May 4, 2003 | 08:04 PM
  #2  
HighHopes85's Avatar
HighHopes85
Drifting
10 Year Member
 
Joined: Mar 2001
Posts: 1,636
Likes: 3
From: Lafayette IN
Default Re: Coldstart sensor? (Barrier)

1) Does an '86 have a cold start sensor.
2) Device that would cause richer mixture or faster idle at cold start? My car seems to not want to idle at first start up.
3) I have to play with the gas to keep it going. As soon as it's driven a bit it's fine.
Barrier
:confused:
1) Yep. The general location is under the thermostat housing neck, sticking out of the front of the lower plenum (under the throttle body, but on the vertical surface). It has a square connector on it, similar to the fuel injector plug.

2) The Cold Start Valce (CSV) is active, the switch is closed. When the switch is open, the valve is supposed to not flow fuel.

3) If you have to "give it gas", the extra air is probably what is helping you out.
Reply
Old May 4, 2003 | 08:08 PM
  #3  
scorp508's Avatar
scorp508
Team Owner
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Default Re: Coldstart sensor? (HighHopes85)

When the sensor sees yoru coolant is below 100* (F) at startup the CSV releases a 7 second mist of fuel into your intake manifold to help start.
Reply

Get notified of new replies

To Coldstart sensor?





All times are GMT -4. The time now is 01:19 PM.

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