C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Help me diagnose

Thread Tools
 
Search this Thread
 
Old Dec 3, 2024 | 01:48 PM
  #41  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by mmartinez
My opps reposted previous post
if the starter does need to be replaced, any upgrades/preventative maintenance I should consider while there have it apart?
Reply
Old Dec 3, 2024 | 01:55 PM
  #42  
C5 Diag's Avatar
C5 Diag
Moderator, Tech Contributor
Supporting Lifetime Gold
10 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Sep 2013
Posts: 15,539
Likes: 4,018
From: Cape Coral, Florida
Default

There is the negative battery cable block ground along with a few others above the starter…I would have the shop remove them and clean with a wire brush and
reinstall…make sure they do the same with the connectors on the starter…the crankshaft position sensor is in that area but if the car is running fine I would leave it alone…if you want to change it that’s on you…change with an OEM only !!
Reply
Old Dec 3, 2024 | 01:56 PM
  #43  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by C5 Diag
There is the negative battery cable block ground along with a few others above the starter…I would have the shop remove them and clean with a wire brush and
reinstall…make sure they do the same with the connectors on the starter.
thank you!
Reply
Old Dec 5, 2024 | 11:44 AM
  #44  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by mmartinez
To the OP, it's not surprising that this would happen, heat is the enemy to starters and starter solenoids. The nine hour road trip didn't help matters, especially if the starter/solenoid was orginal equipment .
Looks like it was the theft deterrent relay as you suspected. Much cheaper than I anticipated thankfully. Seems like I should get my ears checked, I know I heard a click.

Unfortunately, looks like the harmonic balancer is wobbling which is odd because it was recently (1.5 years ago) replaced. The dealer must have screwed up the install but was on the prior seller's ownership so don't think I have any recourse. Any recommendations for replacement harmonic balancers and associated parts? Don't plan to track the car or anything if that matters. Just a fun weekend toy.
Reply
Old Dec 5, 2024 | 11:49 AM
  #45  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Also - anything else that I should do preventive maintenance wise while the HB is completed? From reading some posts, looks like the starter is removed/accessed for this job - if so, would it make sense to knock that out while there?
Reply
Old Dec 5, 2024 | 12:06 PM
  #46  
mmartinez's Avatar
mmartinez
Melting Slicks
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Sep 2008
Posts: 3,133
Likes: 802
From: Espanola New Mexico
Default

You could have been hearing the TDR click on, but it's contacts were pitted or worn. Sorry to hear about the HB, but I don't belive the starter has to be removed.
Reply
Old Dec 5, 2024 | 12:07 PM
  #47  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by mmartinez
You could have been hearing the TDR click on, but it's contacts were pitted or worn.
yea - the contacts were corroded.
Reply
Old Dec 16, 2024 | 01:10 PM
  #48  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by C5 Diag
That was bad manufacturing of FLA battery 20 years ago…not anymore !!
Swapped that batter to a new FLA as previously mentioned and looks like the battery already failed on me. Caught it very quickly - only been a couple of days. Just noticed some liquid under the car in the garage. I'm going to spray the area with battery cleaner/neutralizer. Any other recommendations on cleaning?

Going out to swap this FLA with an AGM type.
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 16, 2024 | 01:50 PM
  #49  
C5 Diag's Avatar
C5 Diag
Moderator, Tech Contributor
Supporting Lifetime Gold
10 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Sep 2013
Posts: 15,539
Likes: 4,018
From: Cape Coral, Florida
Default

Originally Posted by Espi2
Swapped that batter to a new FLA as previously mentioned and looks like the battery already failed on me. Caught it very quickly - only been a couple of days. Just noticed some liquid under the car in the garage. I'm going to spray the area with battery cleaner/neutralizer. Any other recommendations on cleaning?

Going out to swap this FLA with an AGM type.

Is that liquid you’re seeing battery acid or possibly water from the AC or you haven’t checked ??
Reply
Old Dec 16, 2024 | 01:51 PM
  #50  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by C5 Diag
Is that liquid battery acid or possibly water from the AC or you haven’t checked ??
definitely battery acid - coming from top of battery and leaking down.
Reply
Old Dec 16, 2024 | 01:54 PM
  #51  
C5 Diag's Avatar
C5 Diag
Moderator, Tech Contributor
Supporting Lifetime Gold
10 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Sep 2013
Posts: 15,539
Likes: 4,018
From: Cape Coral, Florida
Default

If you do get a new battery and you have a DVOM and know how to use it I’d check to see if the battery is not overcharging.
Reply
Old Dec 16, 2024 | 06:21 PM
  #52  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by C5 Diag
If you do get a new battery and you have a DVOM and know how to use it I’d check to see if the battery is not overcharging.
just cleaned the area with CRC battery cleaner and definitely was a bunch of acid in many places as the foam turned red to indicate presence of the acid. I’m going to do it one more time tomorrow.

do you think I need to access the pcm from the wheel well also or is cleaning from above sufficient?
Reply
Old Dec 16, 2024 | 07:29 PM
  #53  
Dads2kconvertible's Avatar
Dads2kconvertible
Melting Slicks
 
Joined: Sep 2021
Posts: 2,555
Likes: 1,213
Default

I'd be pulling battery and battery tray to clean underneath the battery tray. There is an electrical box underneath it and if battery acid gets in there and corrodes things you'll have a huge mess years from now.
Reply
Old Dec 16, 2024 | 07:30 PM
  #54  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by Dads2kconvertible
I'd be pulling battery and battery tray to clean underneath the battery tray. There is an electrical box underneath it and if battery acid gets in there and corrodes things you'll have a huge mess years from now.
that’s exactly what I did this afternoon - will be painting some tomorrow to cover up a bit of the paint that came off the frame. My concern is it was leaking under the car a bit so wondering if there are other areas I cannot see.
Reply
Old Dec 16, 2024 | 07:47 PM
  #55  
mmartinez's Avatar
mmartinez
Melting Slicks
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Sep 2008
Posts: 3,133
Likes: 802
From: Espanola New Mexico
Default

I would remove the wheel well cover and inspect the pcm and it's connectors as well as the TAC module. You want to make sure no acid made its way to those connections.
Reply
Old Dec 16, 2024 | 07:48 PM
  #56  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default

Originally Posted by mmartinez
I would remove the wheel well cover and inspect the pcm and it's connectors as well as the TAC module. You want to make sure no acid made its way to those connections.
ok - will do that in the morning. Thanks.
Reply
Old Dec 17, 2024 | 09:33 AM
  #57  
Espi2's Avatar
Espi2
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Nov 2024
Posts: 205
Likes: 45
Default



Reply




All times are GMT -4. The time now is 04:08 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