Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

Erratic Idle

Thread Tools
 
Search this Thread
 
Old Jul 28, 2006 | 02:14 PM
  #1  
TAGVETTE's Avatar
TAGVETTE
Thread Starter
Racer
 
Joined: Nov 2004
Posts: 326
Likes: 0
From: VA
Default Erratic Idle

OK, I've posted on this earlier and have tried some things.

I took the BW completely off and relooked at all the connections to make sure there was not unmetered air getting in. No problem found.

I haven't closed the hole in my radiator baffle that I had cut for the BW Icebox.

I'm leading to a throttle body cleaning. Can I do this with Throttle Body cleaner and follow the same directions? Since the AFM will not be seeing airflow when the engine is rev'd, will this cause a problem?
Reply
Old Jul 28, 2006 | 02:18 PM
  #2  
WKMCD's Avatar
WKMCD
Race Director
15 Year Member
 
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Default

While you're at it, clean the MAF sensors CAREFULLY with electronics cleaner.
Reply
Old Jul 28, 2006 | 03:31 PM
  #3  
patton's Avatar
patton
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2004
Posts: 3,440
Likes: 660
From: panama city beach florida USA
St. Jude Donor '09
Default

did you try a idle relearn
Reply
Old Jul 28, 2006 | 04:09 PM
  #4  
TAGVETTE's Avatar
TAGVETTE
Thread Starter
Racer
 
Joined: Nov 2004
Posts: 326
Likes: 0
From: VA
Default

Originally Posted by patton
did you try a idle relearn
No, I didn't. I can do it, but it does not make any sense that this would have to be done when it's run fine up until a month ago. I haven't run it very much as I've been sporatically on the road.

I've seen the steps shown here someplace before, does someone have a link or can they paste it here?
Reply
Old Jul 28, 2006 | 04:14 PM
  #5  
Architect's Avatar
Architect
Pro
20 Year Member
 
Joined: Nov 2004
Posts: 645
Likes: 12
From: Hermosa Beach CA
Default

this could be as simple as a bad batch of fuel. Run some high octane fuel additive through it. See if it helps.
Reply
Old Jul 28, 2006 | 04:17 PM
  #6  
TAGVETTE's Avatar
TAGVETTE
Thread Starter
Racer
 
Joined: Nov 2004
Posts: 326
Likes: 0
From: VA
Default

That's one of the thing's I've considered. I didn't run Techron in it the last fill up and this thing seem finicky when it comes to fuel.
Reply
Old Jul 28, 2006 | 04:25 PM
  #7  
Architect's Avatar
Architect
Pro
20 Year Member
 
Joined: Nov 2004
Posts: 645
Likes: 12
From: Hermosa Beach CA
Default

Worth a shot. The small things are easy to overlook.
Reply
Old Jul 28, 2006 | 07:43 PM
  #8  
99mallett's Avatar
99mallett
Le Mans Master
Supporting Lifetime Gold
15 Year Member
St. Jude 10 Year Donor
 
Joined: Feb 2003
Posts: 6,369
Likes: 73
From: The line waiting to see Santa Claus stretched all the way back to Terre Haute, and I was at the end, Indiana
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18
Default

I had a rough idle a little while back and tuner guru Chuck Mallett suggested a couple of things to look for...one of which was a loose or bad plug wire. I wiggled each one, and sure 'nuff...a loose one. pushed it back on until it clicked, checked the rest of them (all okay), and fired it up. Idled perfect. If I hadn't been deliberately looking for a loose wire, I'd have never been able to tell, and may have driven myself crazy looking for the cause. Check the plug wires.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Jul 28, 2006 | 08:27 PM
  #9  
bioman's Avatar
bioman
Racer
 
Joined: Mar 2004
Posts: 363
Likes: 0
From: Sherrills Ford NC
Default

Erratic Idle.....wasn't he a member of Monty Python group?
Reply
Old Jul 31, 2006 | 09:59 AM
  #10  
TAGVETTE's Avatar
TAGVETTE
Thread Starter
Racer
 
Joined: Nov 2004
Posts: 326
Likes: 0
From: VA
Default

Could the PCV need replacing?

I don't have a whole lot of time to devote to this, that is why I'm trying to get as many ideas as possible and systematically look at them all.
Reply
Old Jul 31, 2006 | 10:22 AM
  #11  
TomT's Avatar
TomT
Burning Brakes
20 Year Member
 
Joined: Feb 2004
Posts: 1,024
Likes: 108
From: Ocala, Fl. State of Confusion
Default

Originally Posted by patton
did you try a idle relearn
That is where I would start.
Reply
Old Aug 3, 2006 | 09:35 AM
  #12  
TAGVETTE's Avatar
TAGVETTE
Thread Starter
Racer
 
Joined: Nov 2004
Posts: 326
Likes: 0
From: VA
Default

OK, since I've filled up with Techron, it hasn't gone completely away, but it has lessened.
Reply

Get notified of new replies

To Erratic Idle





All times are GMT -4. The time now is 04:28 AM.

story-0
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
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE