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

Engine will not fire

Thread Tools
 
Search this Thread
 
Old Feb 3, 2010 | 09:22 AM
  #21  
surfer92's Avatar
surfer92
Pro
 
Joined: Oct 2009
Posts: 679
Likes: 0
From: vero beach florida
Default

Originally Posted by mrmtrtrnd
Hey guys thanks for the help, checked tonight and had no spark. Tomorrow I'll pick up a ICM and Coil and put them in. I just needed a place to start looking and work from there.
Instead of throwing money at it, take the coil and ICM off and have them tested!!!!!!!!!!
Reply
Old Feb 3, 2010 | 05:59 PM
  #22  
mrmtrtrnd's Avatar
mrmtrtrnd
Thread Starter
Race Director
Supporting Lifetime
10 Year Member
 
Joined: Sep 2008
Posts: 10,777
Likes: 5
From: Wichita Ks
Default

Hey I wanted to thank you guys for the help. I bought the ICM and Coil and installed the ICM and it FIRED RIGHT UP. I put the clam shell down and went for a cruise and it was running as good as ever. When I get a little more time I'll install the coil. I didn't want drain the coolant down and pull those hoses off to get to the coil tonight. Being 17 years old I thought it would be a good idea to replace that also, but another day. It was great to get it back on the road after weeks of bad weather or being broken down.

To sufer92 and the others that said have the parts tested first, I know that's the way to go but didn't know where to take them. I'm making a point to find out where for the next time something goes out. That will take the guess work out of the problem.

Last edited by mrmtrtrnd; Feb 3, 2010 at 06:04 PM.
Reply
Old Feb 3, 2010 | 06:16 PM
  #23  
Al Borman's Avatar
Al Borman
Instructor
10 Year Member
 
Joined: Jan 2010
Posts: 174
Likes: 4
From: Austin_Palm Bay_Houston Texas_Florida_Texas
Default

Originally Posted by mrmtrtrnd
Hey I wanted to thank you guys for the help. I bought the ICM and Coil and installed the ICM and it FIRED RIGHT UP. I put the clam shell down and went for a cruise and it was running as good as ever. When I get a little more time I'll install the coil. I didn't want drain the coolant down and pull those hoses off to get to the coil tonight. Being 17 years old I thought it would be a good idea to replace that also, but another day. It was great to get it back on the road after weeks of bad weather or being broken down.

To sufer92 and the others that said have the parts tested first, I know that's the way to go but didn't know where to take them. I'm making a point to find out where for the next time something goes out. That will take the guess work out of the problem.
OH What a Feeling....eh !!!!!!! Congrats and good job! Having a non-running vette is depressing...I know

Cheers !!
Al
Reply
Old Feb 4, 2010 | 05:44 AM
  #24  
TWISTERUP's Avatar
TWISTERUP
Burning Brakes
 
Joined: Feb 2009
Posts: 785
Likes: 3
From: Richmond Virginia
Default

Glad you got her up and running---you gave a pretty good description of a bad ICM. Thank's for posting what got you on the road again
Reply
Old Feb 4, 2010 | 07:45 AM
  #25  
pcolt94's Avatar
pcolt94
Le Mans Master
20 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
Default

Good job and success. I think you made the right move it replacing the ICM. If they tested it, it would probably have checked good when cold. It does not get any heat applied to it and the problem might never have appeared. Substitution is sometimes the best method especially if it is time or temperature related.


Originally Posted by mrmtrtrnd
When I get a little more time I'll install the coil. I didn't want drain the coolant down and pull those hoses off to get to the coil tonight. Being 17 years old I thought it would be a good idea to replace that also, but another day.
No need to disconnect any hoses to replace the coil. However I will say it is a PIA the first time to replace the coil because the assembly has rivets which have to be drilled/dremmel the heads off to replace the coil. The ICM is fast, the coil will take you some time.
Reply
Old Feb 4, 2010 | 09:28 AM
  #26  
TWISTERUP's Avatar
TWISTERUP
Burning Brakes
 
Joined: Feb 2009
Posts: 785
Likes: 3
From: Richmond Virginia
Default

BTW--- just thought about this--you may or may not know---most (but not all) new ICMs come with a packet of thermal grease to apply to the back of the ICM to transfer heat away from it---without it the ICM won't live long. I'm speaking of thermal grease NOT dielectric grease. Just thought I'd mention it lest your "joy" be short lived.
Reply
Old Feb 5, 2010 | 05:00 AM
  #27  
jsls0130's Avatar
jsls0130
Le Mans Master
15 Year Member
Liked
 
Joined: Nov 2008
Posts: 5,119
Likes: 12
From: Paintsville,ky
Default

Hey Bob, Glad to hear you got your Vette back up and running..
Reply
Old Feb 5, 2010 | 03:37 PM
  #28  
mrmtrtrnd's Avatar
mrmtrtrnd
Thread Starter
Race Director
Supporting Lifetime
10 Year Member
 
Joined: Sep 2008
Posts: 10,777
Likes: 5
From: Wichita Ks
Default

Originally Posted by TWISTERUP
BTW--- just thought about this--you may or may not know---most (but not all) new ICMs come with a packet of thermal grease to apply to the back of the ICM to transfer heat away from it---without it the ICM won't live long. I'm speaking of thermal grease NOT dielectric grease. Just thought I'd mention it lest your "joy" be short lived.
Thanks for the tip because I didn't know and when I took it out of the box I didn't see anything else. I went out found the box in the trash and the little tube was in with the packing material and would have been thrown out. When I took the old part off the aluminum backer plate and the ICM were both covered with the grease but I thought that was anti corrosive grease because of the aluminum. I'll be removing the part,cleaning the old stuff off and applying the new grease.
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




All times are GMT -4. The time now is 12:25 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