C4 General Discussion General C4 Corvette Discussion not covered in Tech

Wierd Gremlin...

Thread Tools
 
Search this Thread
 
Old Nov 29, 2006 | 03:30 AM
  #1  
Shawn_65's Avatar
Shawn_65
Thread Starter
Pro
 
Joined: May 2005
Posts: 635
Likes: 0
From: Cambria CA
Default Wierd Gremlin...

So.. this has happened twice in a row right after washing my car at one of those self wash things.. All I do is spray it down and wipe with my microfiber mit... but I might be getting something too wet..like the battery?

Right when I start it up the "Check Guages" light comes on but all the guages are fine..Could this be indicating an almost dead battery?

it takes about 3 hours to clear by sitting(drying?) and the second time it kind of faded when I rev'd it a little. then it finally went away and it never comes back on until I wash my car again.. ???

I'm also running rich so I wonder if its a wierd oil pressure thats throwing this, or just loose wiring.. I dont know! ahh.. it runs fine though, its just a gas hog...

Maybe its the Coolant sensor?

1990 L98, any Ideas guys?
Reply
Old Nov 30, 2006 | 12:25 AM
  #2  
Shawn_65's Avatar
Shawn_65
Thread Starter
Pro
 
Joined: May 2005
Posts: 635
Likes: 0
From: Cambria CA
Default

ttt
Reply
Old Nov 30, 2006 | 02:20 AM
  #3  
Casethecorvetteman's Avatar
Casethecorvetteman
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2005
Posts: 5,214
Likes: 65
From: Queensland, AUSTRALIA
Default

Do you have any codes from anytime recently? The check gauges light wont set any as far as i know, but its hard to point a finger with nothing to point it at. You could change the battery and see if that does it, but i would think it might be more likely to be a ground connection or negative terminal that may be abit dirty

What reason do you have to believe its running rich?
Reply
Old Nov 30, 2006 | 02:31 AM
  #4  
Shawn_65's Avatar
Shawn_65
Thread Starter
Pro
 
Joined: May 2005
Posts: 635
Likes: 0
From: Cambria CA
Default

poor gas milage and occasionaly it smells like rotten eggs.. not often though, I really do needa scanner..

I guess when I took my '90 in for injectors and a tune-up they scanned a code 45.. Rich exhuast. Not sure if thats correct or not..

I cant seem to get any codes right now...

Last edited by Shawn_65; Nov 30, 2006 at 02:33 AM.
Reply
Old Nov 30, 2006 | 03:14 PM
  #5  
Fuzzy Dice's Avatar
Fuzzy Dice
Race Director
20 Year Member
Veteran: Navy
Conversation Starter
Liked
 
Joined: Oct 2001
Posts: 19,653
Likes: 428
From: Melbourne Florida
Cruise-In IV Veteran
Default

Originally Posted by Shawn_65
poor gas milage and occasionaly it smells like rotten eggs.. not often though, I really do needa scanner..

I guess when I took my '90 in for injectors and a tune-up they scanned a code 45.. Rich exhuast. Not sure if thats correct or not..

I cant seem to get any codes right now...
Rotten egg smell is an indicator that a catalytic converter is going bad...
Reply
Old Nov 30, 2006 | 03:27 PM
  #6  
aminnich's Avatar
aminnich
Le Mans Master
 
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Default

Originally Posted by Fuzzy Dice
Rotten egg smell is an indicator that a catalytic converter is going bad...
Also the smell you get from an overcharged or shorted out battery that is 'cooking' inside. If you have a lot of crud on the battery and that crud gets wet it makes a path between the terminals, basically shorting out the battery. It would be rare for 'wet crud' to do any damage, but as they say 'sheet happens'.
Reply
Old Dec 1, 2006 | 03:13 AM
  #7  
86PACER's Avatar
86PACER
Le Mans Master
20 Year Member
 
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Default

Originally Posted by Fuzzy Dice
Rotten egg smell is an indicator that a catalytic converter is going bad...
Or that you need to lay off the burritos. Just kidding.

A plugged cat will glow. Easier to check for this at night.
Reply
Old Dec 2, 2006 | 04:08 AM
  #8  
Shawn_65's Avatar
Shawn_65
Thread Starter
Pro
 
Joined: May 2005
Posts: 635
Likes: 0
From: Cambria CA
Default

Thanks guys
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 2, 2006 | 05:53 AM
  #9  
RRT vette's Avatar
RRT vette
Le Mans Master
15 Year Member
 
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Default

If you are running rich it will ruin the catalytic converter. The smell plus if it glow along with decrease in acceleration usually point to a bad/plugged cat.
Reply
Old Feb 28, 2007 | 03:32 PM
  #10  
jhammons01's Avatar
jhammons01
Le Mans Master
10 Year Member
 
Joined: May 2006
Posts: 9,226
Likes: 9
From: Irvine Ca
Default

This thread is only a year old so, I'll Hijack it with the Term Rotten Egg.

I have heard this often, I'd just like confirmation on the Bad Cat issue.

Good Battery.......22 year old Cat.......Rotten Egg smell....only occasionally = bad Cat?
Reply
Old Feb 28, 2007 | 04:19 PM
  #11  
CSS996's Avatar
CSS996
Drifting
 
Joined: Dec 2003
Posts: 1,251
Likes: 1
From: Pueblo CO
Default

Another wierd Gremlin...

Reply
Old Feb 28, 2007 | 06:51 PM
  #12  
'Shifter's Avatar
'Shifter
Team Owner
Supporting Lifetime Gold
15 Year Member
St. Jude 10 Year Donor
Liked
Community Favorite
 
Joined: Oct 2006
Posts: 20,393
Likes: 431
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17
NCM Member '09
Default

Look also at teh MAF burnoff relay....My Z28 won't even start, and when it does, it's rough until that relay
is completely dry...
Reply
Old Feb 28, 2007 | 10:24 PM
  #13  
jhammons01's Avatar
jhammons01
Le Mans Master
10 Year Member
 
Joined: May 2006
Posts: 9,226
Likes: 9
From: Irvine Ca
Default

Originally Posted by M. Hall
Look also at teh MAF burnoff relay....My Z28 won't even start, and when it does, it's rough until that relay
is completely dry...
Wait, go down that path one more time.....
Reply

Get notified of new replies

To Wierd Gremlin...





All times are GMT -4. The time now is 10:54 AM.

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