C7 General Discussion General C7 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

check engine light

Thread Tools
 
Search this Thread
 
Old Dec 2, 2021 | 01:02 PM
  #21  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,422
Likes: 3,275
From: Hartford WI
Default

Originally Posted by Gearhead Jim
^^^
The CEL mentioned in post #22 came on (and went out) about an hour after driving through the heaviest rain I've ever experienced in my life.
We had also bought gas about 30 minutes before, so water someplace might have been the cause.
Why do people like to speculate what it could be. For $100, you can get a scanner to point you in the right direction. If this is a $500 beater, I understand. On a car this much? Instead, people spend time speculating what might cause it base on conditions, etc.
Reply
Old Dec 2, 2021 | 06:19 PM
  #22  
mtb2015's Avatar
mtb2015
Racer
 
Joined: Apr 2021
Posts: 280
Likes: 162
From: Southern Indiana
Default

I have a scanner now for sure. Hope I don’t ever have to use it again. Whatever code I had last time P something. I hope I never see it again. Your think I’d remember but I’m blocking that code out of my mind.
Reply
Old Dec 3, 2021 | 10:02 PM
  #23  
Gearhead Jim's Avatar
Gearhead Jim
Team Owner
Supporting Member
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2000
Posts: 25,001
Likes: 2,701
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Default

Originally Posted by aklim
Why do people like to speculate what it could be. For $100, you can get a scanner to point you in the right direction. If this is a $500 beater, I understand. On a car this much? Instead, people spend time speculating what might cause it base on conditions, etc.
We didn't even speculate at that time about what caused the light, just kept driving.
Because:
The car never hiccupped, all the gauges showed normal, and the light went out after a few seconds.
We were on a road trip hundreds of miles from home and no convenient dealership, especially on the weekend it happened.
And we have a 0 deductible extended warranty if something went bad.

Without the ability to work on the car at that point, knowing the code wasn't going to help us much. The dealership checked it after we got home and said all ok.
We have now owned four modern Corvettes over 20 years/250k miles. Every one of them has had occasional weird electronic glitches that fixed themselves in a few minutes. We pay attention, but we don't get excited too quickly.

"Remember that you own the car, the car doesn't own you."

Last edited by Gearhead Jim; Dec 3, 2021 at 10:46 PM.
Reply
Old Dec 3, 2021 | 10:59 PM
  #24  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,422
Likes: 3,275
From: Hartford WI
Default

Originally Posted by Gearhead Jim
We didn't even speculate at that time about what caused the light, just kept driving.
Because:
The car never hiccupped, all the gauges showed normal, and the light went out after a few seconds.
We were on a road trip hundreds of miles from home and no convenient dealership, especially on the weekend it happened.
And we have a 0 deductible extended warranty if something went bad.

Without the ability to work on the car at that point, knowing the code wasn't going to help us much. The dealership checked it after we got home and said all ok.
We have now owned four modern Corvettes over 20 years/250k miles. Every one of them has had occasional weird electronic glitches that fixed themselves in a few minutes. We pay attention, but we don't get excited too quickly.

"Remember that you own the car, the car doesn't own you."
I prefer to know what the issue is because it is pretty easy to. I never trust what I can feel in the butt. I have seen genuine problems with cars that the gauge does not show. The data does though. Autozone, Advance Auto, etc will scan codes for free. I also have my own scanner with me. When it tells me all is clear, it is clear. I like to do the research first, if possible before the mechanic does. I don't trust unknown people to be truthful and knowledgeable.
Reply
Old Mar 13, 2022 | 01:00 PM
  #25  
BurkeDevlin's Avatar
BurkeDevlin
Racer
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Aug 2021
Posts: 256
Likes: 17
From: NW Montana
Default

Not that it matters at this point, but my CEL (P0324 - knock sensor) seems to have resolved itself over the course of the last 100mi or so. Had to have been the Techron that threw things off.

Adding a bottle to a nearly empty tank might have left it with a bit of a rich mixture before it had time to slosh around and dilute after filling up (??) ... that's the only thing I can come up with.
Reply
Old Mar 13, 2022 | 04:27 PM
  #26  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,422
Likes: 3,275
From: Hartford WI
Default

Originally Posted by BurkeDevlin
Not that it matters at this point, but my CEL (P0324 - knock sensor) seems to have resolved itself over the course of the last 100mi or so. Had to have been the Techron that threw things off.

Adding a bottle to a nearly empty tank might have left it with a bit of a rich mixture before it had time to slosh around and dilute after filling up (??) ... that's the only thing I can come up with.
Isn't knocking more of a lean mixture thing?
Reply
Old Mar 13, 2022 | 04:41 PM
  #27  
BurkeDevlin's Avatar
BurkeDevlin
Racer
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Aug 2021
Posts: 256
Likes: 17
From: NW Montana
Default

That's what I always thought ... but I've had the car out a couple times since and no issues. Techron was the only variant that changed.
Reply
Old Mar 13, 2022 | 04:43 PM
  #28  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,422
Likes: 3,275
From: Hartford WI
Default

Originally Posted by BurkeDevlin
That's what I always thought ... but I've had the car out a couple times since and no issues. Techron was the only variant that changed.
That could be just the wiring having issues or the sensor may glitching.
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




All times are GMT -4. The time now is 03:36 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