C5 Scan & Tune Corvette Onboard Diagnostics, Service Advice, Dyno Tuning, Fuel Management, Tuning Software, LS1 Edit, AutoTap, Diablo
Sponsored by:
Sponsored by: Kraken

HELP!! IAC count too low! + DTV codes

Thread Tools
 
Search this Thread
 
Old May 17, 2003 | 10:16 PM
  #1  
ElanMike's Avatar
ElanMike
Thread Starter
Instructor
 
Joined: Aug 1999
Posts: 235
Likes: 0
From: Chandler AZ
Default HELP!! IAC count too low! + DTV codes

After my new H/C set up, I had an IAC count of 170 at idle. So i drilled a 1/8inch in the TB. Now the IAC count is 20. The guide i had said 30-50 is the target. What if it is too low?
I'm also getting an error code P0300 (mis-fire) and EF-live states i have a problem with Injector #8. If anyone can help please do
Reply
Old May 19, 2003 | 01:46 PM
  #2  
ElanMike's Avatar
ElanMike
Thread Starter
Instructor
 
Joined: Aug 1999
Posts: 235
Likes: 0
From: Chandler AZ
Default Re: HELP!! IAC count too low! + DTV codes (ElanMike)

Can anyone help?
Reply
Old May 19, 2003 | 10:14 PM
  #3  
nevrenuf's Avatar
nevrenuf
Melting Slicks
15 Year Member
 
Joined: Aug 1999
Posts: 2,540
Likes: 2
From: Milwaukee WI
LS1Edit Guru
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Default Re: HELP!! IAC count too low! + DTV codes (ElanMike)

Don't worry about the IAC count.. if too low, that simply means that the PCM has retracted the IAC motor to a lower level. Unless that motor gets to zero, you've got nothing to worry about. If the motor were unable to go low enough, you'd have too high an idle. Don't sweat the number.

If EFI says a specific misfire, and it is repeatable, I'd look for a REAL misfire. Either have the #8 injector tested or swap it with another cylinder to see if the problem moves with it.

If you have injector issues, I'd recommend getting them all ultrasonically cleaned and flow tested.. There are several excellent places that can do that for you quickly.

Hope this helps
Reply

Get notified of new replies

To HELP!! IAC count too low! + DTV codes





All times are GMT -4. The time now is 03:00 PM.

story-0
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-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

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


VIEW MORE
story-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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