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

C4 Idiling Problem

Old Jan 21, 2013 | 02:00 PM
  #1  
greddyrcng's Avatar
greddyrcng
Thread Starter
Heel & Toe
 
Joined: Jun 2009
Posts: 20
Likes: 0
From: Opelika Alabama
Default C4 Idiling Problem

when you start the car up it goes straight up to redline you have to shut the car off or it will blow the motor please help me here
Reply
Old Jan 21, 2013 | 02:08 PM
  #2  
84VetteMan205hp's Avatar
84VetteMan205hp
Pro
 
Joined: Jan 2012
Posts: 605
Likes: 2
From: Queen Creek Arizona
Default

the year would help
Reply
Old Jan 21, 2013 | 02:16 PM
  #3  
BBLACKHURST's Avatar
BBLACKHURST
Heel & Toe
 
Joined: Dec 2012
Posts: 22
Likes: 0
From: Chambersburg Pennsylvania
Default

Have you checked the Throttle cable to make sure its not stuck open?
Reply
Old Jan 21, 2013 | 03:12 PM
  #4  
John A. Marker's Avatar
John A. Marker
Le Mans Master
15 Year Member
 
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
Default

Check TB cable.

Most likely cause is MAJOR vacuum leak. Check all lines including brake booster line.
Reply
Old Jan 21, 2013 | 07:57 PM
  #5  
Corvette40's Avatar
Corvette40
Racer
10 Year Member
 
Joined: Jun 2006
Posts: 361
Likes: 6
Default

Originally Posted by John A. Marker
Check TB cable.

Most likely cause is MAJOR vacuum leak. Check all lines including brake booster line.
Reply
Old Jan 21, 2013 | 11:05 PM
  #6  
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

Originally Posted by BBLACKHURST
Have you checked the Throttle cable to make sure its not stuck open?
This may be a good place to start and makes sure the throttle plates are closing.

From the profile it sounds like an 85 with some kind of mod.

Also check the IAC motor for a problem.
Reply

Get notified of new replies

To C4 Idiling Problem



Thread Tools
Search this Thread

All times are GMT -4. The time now is 02:11 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