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

New engine, starts, won't run

Thread Tools
 
Search this Thread
 
Old Jun 17, 2006 | 12:08 PM
  #21  
scranage's Avatar
scranage
Thread Starter
Burning Brakes
Supporting Lifetime
 
Joined: Nov 2005
Posts: 908
Likes: 1
From: Colorado Springs Colorado
Default The Yellow Peril rides again!!!

It was just a spin around the block, but its been months so I was pleased...

Not smoking any tires yet, but progress still. I have a new ECM on its way to replaced my hacked up one, so maybe that will help my hunting idle, or at least I can hold out hope till it arrives...

Last edited by scranage; Jun 17, 2006 at 01:05 PM.
Reply
Old Jun 17, 2006 | 07:32 PM
  #22  
scranage's Avatar
scranage
Thread Starter
Burning Brakes
Supporting Lifetime
 
Joined: Nov 2005
Posts: 908
Likes: 1
From: Colorado Springs Colorado
Default

As I was re-lashing the valves, the mail lady dropped of my new (used off Ebay) ECM. So I moved the memcal over and installed it. After the car warmed up, the idle stopped hunting and settled down, so I guess there was more wrong with my old ECM than just the TPS reference voltage output.

Anyway, I'm going to quit for the day while I'm ahead. Tomorrow I think I'll drain some coolant off, re-install the 58MM BBK, reset the IAC and take her for another spin.

Thanks everyone! I think I'm almost ready to take her down to the Dyno for the datalog and final tune. Soon we'll see if all the time and money was worthwhile.
Reply
Old Jun 17, 2006 | 07:37 PM
  #23  
LD85's Avatar
LD85
Race Director
25 Year Member
 
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Default

Drain that old gas out too, put some fresh hi octane in it
Reply
Old Jun 17, 2006 | 09:20 PM
  #24  
Redeasysport's Avatar
Redeasysport
Le Mans Master
 
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
Default

Good to hear.It sounds like the IAC may still be an issue but run it and let the ecm learn before playing anymore.I was happy to assist I have not done it much lately so I hope I was some help to you.The Idle with the IAC un plugged should be ~500+or- But I have read some threads on the 58mm needing this type of treaking.Now have some fun.
Reply
Old Jun 18, 2006 | 02:14 AM
  #25  
scranage's Avatar
scranage
Thread Starter
Burning Brakes
Supporting Lifetime
 
Joined: Nov 2005
Posts: 908
Likes: 1
From: Colorado Springs Colorado
Default

The only sad news is that I have a bad case of clackty clack on the driver's side valve train that makes me think I have a bad lifter there. I tried re-lashing all the valves, and the problem is still there. I did install a new set of CC-850 lifters during the upgrade, but one of them may have been a dud. I'm going to try one more time to isolate the offender before I pull the intake again.
Reply




All times are GMT -4. The time now is 04:58 PM.

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