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

Has anyone had this problem?

Thread Tools
 
Search this Thread
 
Old Feb 13, 2004 | 12:14 PM
  #1  
ItsAVett's Avatar
ItsAVett
Thread Starter
Navigator
 
Joined: Feb 2004
Posts: 9
Likes: 0
From: Stow OH
Default Has anyone had this problem?

New member enjoying corvette forum very much, I have a problem I need help with.My 93 starts and runs fine cold, as soon as it reaches normal temperature it starts running very bad,feels like I'm puling a big trailer when I accelerate,misses,hesitates,backfires.I took it to dealer they said it was computer,still no change.I have a few mods,KN,160 thermo,hypertech,355 gears,no mufflers,60,000 miles.I'm thinking optispark,its original.Anybody have anyother ideas?
Reply
Old Feb 13, 2004 | 12:17 PM
  #2  
VR'92's Avatar
VR'92
Team Owner
20 Year Member
 
Joined: Sep 2003
Posts: 25,295
Likes: 4
From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
Default Re: Has anyone had this problem? (ItsAVett)

When you saw no mufflers does that mean you forgot or removed the O2 sensors in the front of the exhaust system? Might have to do with them. :flag
Reply
Old Feb 13, 2004 | 12:27 PM
  #3  
Strick's Avatar
Strick
Race Director
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Feb 2003
Posts: 11,672
Likes: 20
From: Lake Wylie SC
Default Re: Has anyone had this problem? (ItsAVett)

Any engine codes? My 92 had 44K on it when I replaced my optispark. It was a mess inside and I vented the new one.

WELCOME TO THE FORUM :hurray:
Reply
Old Feb 13, 2004 | 12:29 PM
  #4  
ItsAVett's Avatar
ItsAVett
Thread Starter
Navigator
 
Joined: Feb 2004
Posts: 9
Likes: 0
From: Stow OH
Default Re: Has anyone had this problem? (VictorRussell'92)

I ment i removed mufflers and replaced with pipes everthing is intact.this problem arose much after all mods were made. :banghead: :banghead:
Reply
Old Feb 13, 2004 | 12:31 PM
  #5  
ItsAVett's Avatar
ItsAVett
Thread Starter
Navigator
 
Joined: Feb 2004
Posts: 9
Likes: 0
From: Stow OH
Default Re: Has anyone had this problem? (Strick)

No codes
Reply
Old Feb 13, 2004 | 01:00 PM
  #6  
VR'92's Avatar
VR'92
Team Owner
20 Year Member
 
Joined: Sep 2003
Posts: 25,295
Likes: 4
From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
Default Re: Has anyone had this problem? (ItsAVett)

OPTI most likley
Reply
Old Feb 13, 2004 | 04:18 PM
  #7  
C4-Wolf's Avatar
C4-Wolf
Pro
20 Year Member
 
Joined: Dec 2001
Posts: 715
Likes: 0
From: NYC NY
Default Re: Has anyone had this problem? (ItsAVett)

A clogged cat will cause problems the more it warms up to the point where the car almost has no power. Something to look into if it is not the computer.
Reply
Old Feb 14, 2004 | 12:14 PM
  #8  
vinnies87's Avatar
vinnies87
Le Mans Master
 
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
Default Re: Has anyone had this problem? (ItsAVett)

1st welcome.... the CATS have been know for alot of those issues... something to check...
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Feb 14, 2004 | 12:22 PM
  #9  
ItsAVett's Avatar
ItsAVett
Thread Starter
Navigator
 
Joined: Feb 2004
Posts: 9
Likes: 0
From: Stow OH
Default Re: Has anyone had this problem? (C4-Wolf)

I was told by the dealer that cats were OK. HELP! :banghead: :banghead:
Reply
Old Feb 14, 2004 | 12:42 PM
  #10  
65Z01's Avatar
65Z01
Team Owner
20 Year Member
 
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Default Re: Has anyone had this problem? (ItsAVett)

If it's idling roughly and you suspect ignition problems, clip a timing light onto a spark plug wire to see if the miss coincides with missed flashes.
Reply
Old Feb 14, 2004 | 02:06 PM
  #11  
GS057's Avatar
GS057
Safety Car
20 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Oct 2002
Posts: 4,277
Likes: 161
From: Austin Texas
2018 C6 of Year Finalist
Default Re: Has anyone had this problem? (VictorRussell'92)

OPTI most likley
:iagree:
Reply
Old Feb 14, 2004 | 06:01 PM
  #12  
Pete K's Avatar
Pete K
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,518
Likes: 19
Default Re: Has anyone had this problem? (GS057)

Had similar symtoms on my 87 when maf sensor went bad.
Reply
Old Feb 14, 2004 | 06:07 PM
  #13  
Kizmo's Avatar
Kizmo
Pro
 
Joined: Apr 2002
Posts: 605
Likes: 0
From: Outer Banks NC FIRST IN FLIGHT
Default Re: Has anyone had this problem? (Pete K)

Are you getting any black smoke? If you are it's the O2 sensors, but it's odd your getting no codes.
Reply
Old Feb 14, 2004 | 06:09 PM
  #14  
jackdaroofer's Avatar
jackdaroofer
Race Director
Supporting Lifetime Gold
15 Year Member
 
Joined: Dec 1999
Posts: 11,182
Likes: 2
From: Almost all Skyline Cruises Vettes at Waterside 1-5
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In V Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Default Re: Has anyone had this problem? (Pete K)

Had similar symtoms on my 87 when maf sensor went bad.
:cheers: I am having similar problems now with my 88 and it seems to be in the MAFcircuit. Getting codes 33 & 34, but diagnostic tests say the Maf sensor itself is OK, ground is bad.

I replaced relays and now the problem is intermittent and the car runs great as long as it doesn't get an "intermittent"! When it does, it runs like limp home, but as soon as I clear the code, it runs great again

go figure

:seeya

:steering:
Reply
Old Feb 15, 2004 | 07:18 PM
  #15  
ItsAVett's Avatar
ItsAVett
Thread Starter
Navigator
 
Joined: Feb 2004
Posts: 9
Likes: 0
From: Stow OH
Default Re: Has anyone had this problem? (jackdaroofer)

MAF checks out OK,still no codes.I'm still thinking OPTI? :banghead: :banghead:
Reply

Get notified of new replies

To Has anyone had this problem?





All times are GMT -4. The time now is 09:56 PM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
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-7
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-8
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-9
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