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

Car Doesn't Start

Thread Tools
 
Search this Thread
 
Old Jul 5, 2023 | 03:32 PM
  #1  
Tau511's Avatar
Tau511
Thread Starter
Heel & Toe
 
Joined: Feb 2021
Posts: 17
Likes: 5
Default Car Doesn't Start

I've been having this issue for ages. It is very hard to predict and replicate.

When I turn ignition NOTHING happens.

I charge up the battery (which isn't low) and check voltage with multimeter (like 12.22). Put battery back it, lights come on - no start. Doesn't even crank.

I charged up the battery yesterday to pull the car out of the garage. Backed it up 30 feet. Car started fine yesterday - NO ISSUES. Now it responds as described.

Thus far I have replaced starter motor and done leak down tests to see for a draw. Everything reads good. I pulled all grounds, cleaned surfaces, replaced - doesn't fix problem. Not really sure what to do, feels strange that the problem is intermittent but has nothing to do with driving.

Would appreciate advice.
Reply
Old Jul 5, 2023 | 03:40 PM
  #2  
interpon's Avatar
interpon
Le Mans Master
Supporting Member
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2019
Posts: 7,658
Likes: 2,470
From: Indiana
Default

12.2 seems low for a charged battery.. over 5 years old dump it
Reply
Old Jul 5, 2023 | 03:43 PM
  #3  
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

guess key switch is next.
Reply
Old Jul 5, 2023 | 03:44 PM
  #4  
Tau511's Avatar
Tau511
Thread Starter
Heel & Toe
 
Joined: Feb 2021
Posts: 17
Likes: 5
Default

Battery is only a year old but I'll take it by autozone and see if they will swap it.

To add on: I've also tested the battery post at the starter and I am getting 12 volts there too.
Reply
Old Jul 5, 2023 | 03:44 PM
  #5  
Tampa Jerry's Avatar
Tampa Jerry
Le Mans Master
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Top Answer: 1
 
Joined: Aug 2005
Posts: 6,541
Likes: 1,975
From: Temple Terrace Florida
Default

Is it a stick or automatic? Have you checked the red wire that goes through the harness at the firewall under the master cylinder? Do a search on the forum. Jerry
Reply
Old Jul 5, 2023 | 03:46 PM
  #6  
Tau511's Avatar
Tau511
Thread Starter
Heel & Toe
 
Joined: Feb 2021
Posts: 17
Likes: 5
Default

Originally Posted by Tampa Jerry
Is it a stick or automatic? Have you checked the red wire that goes through the harness at the firewall under the master cylinder? Do a search on the forum. Jerry

Manual 4 speed have not checked red wire will look at it now.

Wish I had the car in the nice cool garage - it's super hot today
Reply
Old Jul 5, 2023 | 04:08 PM
  #7  
Tau511's Avatar
Tau511
Thread Starter
Heel & Toe
 
Joined: Feb 2021
Posts: 17
Likes: 5
Default

I was able to get the car started but the solution has me confused. I noticed my interior lights were not turning off so I started going through the system. With the white wire unplugged from the passenger door switch the interior lights worked appropriately. After that I tried the car again and it started. Is this just a coincidence or is there something in this system I can look into that could cause a short or something?
Reply
Old Jul 5, 2023 | 04:24 PM
  #8  
speedreed8's Avatar
speedreed8
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2006
Posts: 2,417
Likes: 336
From: Texas
Default

There is a neutral safety switch on your clutch pedal under the dash.
Reply
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
Old Jul 5, 2023 | 04:41 PM
  #9  
OMF's Avatar
OMF
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2006
Posts: 2,291
Likes: 492
From: Salmon Arm, BC
Default

My wife had the same issue as you are when starting the car.....she just wasn't pushing the clutch in far enough.....
Reply
Old Jul 5, 2023 | 05:20 PM
  #10  
Bikespace's Avatar
Bikespace
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 11,949
Likes: 4,507
From: Virginia
Default

If your car has a working clutch safety switch, it and @OMF's must be the only two on the planet that haven't been bypassed or removed.

What year car? There is an alarm system in some years that can cause strange issues.
Reply
Old Jul 5, 2023 | 08:18 PM
  #11  
Tau511's Avatar
Tau511
Thread Starter
Heel & Toe
 
Joined: Feb 2021
Posts: 17
Likes: 5
Default

Originally Posted by Bikespace
If your car has a working clutch safety switch, it and @OMF's must be the only two on the planet that haven't been bypassed or removed.

What year car? There is an alarm system in some years that can cause strange issues.
clutch safety switch is working. That was one of my early suspicions. I've bypassed them before but I'm planning on selling this car and figured it was safer to keep it in good working order. I actually also considered OMF's thought that maybe I just wasn't pushing the pedal in far enough but I've been paying attention plus usually have a buddy or my neighbor actually in the car trying to start while I check stuff under the hood. I can't imagine three different people all making that same mistake.

This is a '73. If it has an alarm that's news to me.
Reply
Old Jul 8, 2023 | 11:56 AM
  #12  
Eliredandblack's Avatar
Eliredandblack
Melting Slicks
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 2018
Posts: 2,327
Likes: 721
From: Marietta GA
Default

The alarm on a 73 only sounds a horn at the rear of the car. I will bet you the clutch safety switch is unhappy. On my 73 you have to push the pedal to the Floor or the starter will not engage. If I wasn’t so old, I would go under the dash and see if I could do some kind of adjustment to the switch, so the clutch pedal would not need to travel so far.
Reply
Old Jul 8, 2023 | 12:15 PM
  #13  
OMF's Avatar
OMF
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2006
Posts: 2,291
Likes: 492
From: Salmon Arm, BC
Default

Have you tried a manual switch right at the starter? That might be something to try and if it works then start tracing backwards from there.
Reply

Get notified of new replies

To Car Doesn't Start





All times are GMT -4. The time now is 10:03 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