C4 General Discussion General C4 Corvette Discussion not covered in Tech

Delayed start

Thread Tools
 
Search this Thread
 
Old Dec 5, 2018 | 11:57 AM
  #1  
Brooks94Z07's Avatar
Brooks94Z07
Thread Starter
Instructor
All Eyes On Me
Liked
 
Joined: Nov 2018
Posts: 120
Likes: 25
From: NJ
Default Delayed start

Hey guys,

Sometimes I've noticed when starting my '94 I seem to have a "delayed start." Most times it fires right up but from time to time it will not start instantaneously but only while holding the ignition in the start position for anywhere from 1-3 seconds will then start.

Any thoughts ? Optispark issues starting ?
Reply
Old Dec 5, 2018 | 12:09 PM
  #2  
Kevova's Avatar
Kevova
Le Mans Master
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
Default

Fuel pressure .Low coolant. Tune up?
Reply
Old Dec 5, 2018 | 12:15 PM
  #3  
Brooks94Z07's Avatar
Brooks94Z07
Thread Starter
Instructor
All Eyes On Me
Liked
 
Joined: Nov 2018
Posts: 120
Likes: 25
From: NJ
Default

Originally Posted by Kevova
Fuel pressure .Low coolant. Tune up?
Fuel pressure seems to be ok and coolant was recently done
Reply
Old Dec 5, 2018 | 01:37 PM
  #4  
1993C4LT1's Avatar
1993C4LT1
Race Director
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2011
Posts: 16,086
Likes: 819
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
Default

I went through literally everything on my 93 that would cause a hard start. Always started right up cold. But anytime you brought the engine up to temp, and let it sit for 20 minutes or more, it would take about 3 or 4 engine cranks to start. Despite that, it ran awesome. Only thing I left untouched was the fuel pump relay.

I would lift up the fuel rail, and see if fuel drips from the injectors. Key on, then off. Obviously don't start it.
Reply
Old Dec 5, 2018 | 03:44 PM
  #5  
belairbrian's Avatar
belairbrian
Melting Slicks
Liked
Loved
Top Answer: 1
Top Answer: 3
 
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
Default

If I understand your problem, it was the same as I had on my 92. It takes 2-3 seconds for the starter to engage and spin.

It was the contacts in the starter. Simple fix costs around $20 for parts and about an hour or two to do start to finish.

Over time the contacts burn and build up carbon. When you turn the key it takes a few seconds to burn through the carbon.
here are some pics of what I found with new parts for comparison


Reply
Old Dec 5, 2018 | 04:17 PM
  #6  
RWC4PHX's Avatar
RWC4PHX
Advanced
 
Joined: Dec 2017
Posts: 66
Likes: 10
From: Phoenix AZ
Default

Or he means like my 94, which is not a DD, on the initial cold start it cranks over fine but kind of stumbles before it actually begins to run. Once warmed up it cranks the same but starts running right away. Opti and ICM recently changed. Car runs fine, just figured it was 20+ years old and maybe they all do this.
Reply
Old Dec 6, 2018 | 08:43 AM
  #7  
Brooks94Z07's Avatar
Brooks94Z07
Thread Starter
Instructor
All Eyes On Me
Liked
 
Joined: Nov 2018
Posts: 120
Likes: 25
From: NJ
Default

No its on the same page as what @belairbrian is talking about.

I will literally hold the ignition in the start position with the clutch in and nothing happens (not trying to turnover or anything) then suddenly the starter will kick in and the engine will turn right over. This happens to me maybe about 20% of the time with startups. Its seems strange but I think that @belairbrian could be on the right track as what I'm experience from time to time.

Really seems to be more of a nuisance issue. In the beginning when this started happening I thought I would be stranded because, I would keep trying to start it with nothing however now I've learned now that if I actually HOLD the ignition in the start position for a few seconds it comes right up...
Reply
Old Dec 6, 2018 | 09:11 AM
  #8  
Toy96CE's Avatar
Toy96CE
Advanced
 
Joined: May 2018
Posts: 61
Likes: 23
From: Spring TX
Default

I agree with belairbrian ... Never had it happen on my vette,,, but had the exact same thing on my sons 2002 mustang GT... did all kinds of troubleshooting ,,could never find a problem.. Then, it started becoming more frequent ..Then, one day wouldn't start at all ,,2hrs later , fired up normal... Put a new starter on it and ..... fixed .. hasn't happened again .
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Michael S. Palmer
story-1

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

 Joe Kucinski
story-2

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

 Joe Kucinski
story-3

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

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Dec 6, 2018 | 12:16 PM
  #9  
belairbrian's Avatar
belairbrian
Melting Slicks
Liked
Loved
Top Answer: 1
Top Answer: 3
 
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
Default

I used this kit. As I mentioned the repair is pretty simple.
https://www.amazon.com/gp/product/B0031HMS7C/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B0031HMS7C/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
Reply
Old Dec 6, 2018 | 12:25 PM
  #10  
belairbrian's Avatar
belairbrian
Melting Slicks
Liked
Loved
Top Answer: 1
Top Answer: 3
 
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
Default

Originally Posted by Toy96CE
I agree with belairbrian ... Never had it happen on my vette,,, but had the exact same thing on my sons 2002 mustang GT... did all kinds of troubleshooting ,,could never find a problem.. Then, it started becoming more frequent ..Then, one day wouldn't start at all ,,2hrs later , fired up normal... Put a new starter on it and ..... fixed .. hasn't happened again .
I went as far as adjusting the ignition switch down on the column (Which is a pain) before I found out about the starter contacts here on the forum.
Reply
Old Dec 6, 2018 | 03:03 PM
  #11  
RWC4PHX's Avatar
RWC4PHX
Advanced
 
Joined: Dec 2017
Posts: 66
Likes: 10
From: Phoenix AZ
Default

My bad. would have helped if i read the OP's full post. No wonder the wife accuses me of not paying attention. Maybe I was actually trying to hijack the tread to have someone say my problem was not one, and is normal. My C4 is is becoming quite the bank account drainer and i can't stop myself.
Reply
Old Dec 8, 2018 | 02:57 AM
  #12  
Vetteblack-96's Avatar
Vetteblack-96
Pro
15 Year Member
All Eyes On Me
 
Joined: Jul 2010
Posts: 600
Likes: 56
From: Elyria, Ohio
Default

Just curious, Kevova suggests possibly low coolant.
Is there a coolant level sensor somewhere in there?
Reply
Old Dec 8, 2018 | 10:37 AM
  #13  
FOURSPEEDVETTE's Avatar
FOURSPEEDVETTE
Safety Car
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Oct 2007
Posts: 4,426
Likes: 229
From: Pennsylvania
Default

I had this happen to me a few times also after the car has been sitting idle for many weeks of time. It would take a longer time cranking to finally start even though the engine seemed to be turning over smooth enough. It turned out that the battery wasn't fully charged. It showed about 11.5 to 11.7 amps. As soon as I put a complete charge on the battery, it turned over very quick and with only about two cranks of the engine. After the complete charge, it then registers 13.7 to 14.5 while running. And then if driven daily, it always starts very quickly.
Reply

Get notified of new replies

To Delayed start





All times are GMT -4. The time now is 06:35 PM.

story-0
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-1
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-2
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-3
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
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE