C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Car Bog?

Thread Tools
 
Search this Thread
 
Old Oct 31, 2011 | 07:26 AM
  #1  
slow78z28's Avatar
slow78z28
Thread Starter
Advanced
15 Year Member
 
Joined: Oct 2006
Posts: 53
Likes: 1
From: Beaufort SC
Default Car Bog?

Hey all! I hope you all can help.

Ive been having a problem lately that whenever I am coming to a stop or turning and disengaging the clutch the car will bog down to 500rpm then up to 1k then back down then even out. Car doesn't surge when idling if I rev it up in neutral sometimes it will drop down to 500rpm again then back up till it evens out.
However it always happens when disengaging the clutch I haven't had this car for too long nor driven it very much but it is starting to become a nuisance. I got a tune hoping to steady it out helped a little but did not fix it. Any ideas? MAF dirty? Bad tune? this is a 1998 Corvette 383 stroker/heads/cam
Reply
Old Nov 1, 2011 | 12:55 PM
  #2  
slow78z28's Avatar
slow78z28
Thread Starter
Advanced
15 Year Member
 
Joined: Oct 2006
Posts: 53
Likes: 1
From: Beaufort SC
Default

Any ideas?
Reply
Old Nov 1, 2011 | 03:37 PM
  #3  
BigGun's Avatar
BigGun
Drifting
10 Year Member
 
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
Default

Originally Posted by slow78z28
Any ideas?
Fluctuating idle can be caused by a vacuum leak. Check all the hose connections, esp the PVC system hoses and connectors.
Reply
Old Nov 1, 2011 | 06:21 PM
  #4  
m6 c5's Avatar
m6 c5
Melting Slicks
 
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
Default

Originally Posted by BigGun
Fluctuating idle can be caused by a vacuum leak. Check all the hose connections, esp the PVC system hoses and connectors.
Reply
Old Nov 1, 2011 | 07:43 PM
  #5  
slow78z28's Avatar
slow78z28
Thread Starter
Advanced
15 Year Member
 
Joined: Oct 2006
Posts: 53
Likes: 1
From: Beaufort SC
Default

Yep checked the hoses I had converted the pcv system into the ls6 valley mod. I just find it so weird it does it when I disengage the clutch and coming to a stop or turn :/
Reply
Old Nov 2, 2011 | 06:56 PM
  #6  
cdkcorvette7's Avatar
cdkcorvette7
Tech Contributor
 
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
Default

Mine used to do exactly what your describing. I checked all the hoses and sprayed with carb cleaner and couldn't find any leaks. I ended up replacing the silicone coupler between my halltech intake and my throttle body and it went away...
Reply
Old Nov 2, 2011 | 09:54 PM
  #7  
m6 c5's Avatar
m6 c5
Melting Slicks
 
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
Default

I had a pretty bad leak and it would only want to stall out when it was cold right after I started it up. Once I fixed it, it was almost impossible to keep it running. You had to keep your foot on the gas when you were coming up to a stop or else it would stall.
Reply

Get notified of new replies

To Car Bog?





All times are GMT -4. The time now is 10:45 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

Slideshow: Check out these easy-to-install upgrades from Extreme Online Store that reshape the look and feel of the C6 Corvette.

By Pouria Savadkouei | 2026-03-23 17:00:27


VIEW MORE