low,surging idle - LS1TECH

Go Back   LS1TECH > VEHICLE SPECIFIC FORUMS > Corvette Performance
Sign in using an external account
Register Forgot Password?
Search


Corvette Performance
C5 | Z06 | C6 | ZR1
Sponsored by
Corvette Central
Click Here


low,surging idle

Reply
 
Thread Tools Search this Thread
Old 03-14-2004, 12:37 AM   #1
Teching In
 
Trader Rating: 0
Join Date: Feb 2004
Location: SAN ANTONIO,TX
Posts: 16
Default low,surging idle

i just installed an ls1 hotcam that a friend gave me in my 99 c5, sounds great at idle but tends to surge and idle low almost to the point of dying.
wandering if drilling a hole in the throttle blade will help? i am a little low on funding so ls1 edit and dyno tuning are not an option yet. it is a 6 speed car and everything else is stock.
99hardtopc5 is offline   Reply With Quote
Old 03-14-2004, 01:13 AM   #2
TECH Enthusiast
 
Carbon's Avatar
 
Trader Rating: 3
Join Date: Apr 2003
Location: Deer Park (Houston),Tx
Posts: 654
Default

drilling a hole in your tb will help out. a buddy of mine drilled mine out .25" and it helped out alot as far as surging goes
__________________
2001 Camaro SS Black -A4
Forged 347/TNT/17" Bogart's
Carbon is offline   Reply With Quote
Old 03-15-2004, 12:15 PM   #3
Teching In
 
Trader Rating: 0
Join Date: Feb 2004
Location: SAN ANTONIO,TX
Posts: 16
Default

researched rilling the throttle blade, it is not advised because of the elctronic throttle control system,looks like i have to get it retuned
99hardtopc5 is offline   Reply With Quote
Old 08-21-2004, 09:18 PM   #4
On The Tree
 
GA_Driver's Avatar
 
Trader Rating: 0
Join Date: Aug 2004
Location: Columbus, GA
Posts: 192
Default

What is the correct RPM for idle? I have am 01 C5... @ idle, it sits at 500, but sometimes when shifting from park to reverse, or from reverse to drive, it drops below that and seems to bog for a second.

It doesn't do it at any other time. Should this be a concern? I'm bone stock, BTW.
__________________
http://www.atomicred.com/jaek/vette/.../sig_vette.jpg
01 C5, A4 w/3.15, Soon-to-be unstockified.
GA_Driver is offline   Reply With Quote
Old 08-23-2004, 01:15 PM   #5
TECH Enthusiast
 
Trader Rating: 0
Join Date: Jul 2003
Location: Ankeny, IA
Posts: 505
Default

The idle needs to be tuned. The decay and idle values sound like they need to be changed. And 500 seems very low GA_Driver. My idle is set at 850. Stock was around there iirc. I would think an A4 car would idle about 800-1000.
__________________
1999 C5 - TFS 215 Heads, F13 112, FAST 90, LS2 TB, LT Headers, Corsa
2008 G8 GT - CAI
2014 Cruze 2.0 TD


Last edited by 99C5JA; 08-23-2004 at 01:35 PM..
99C5JA is offline   Reply With Quote
Old 08-24-2004, 09:53 AM   #6
On The Tree
 
GA_Driver's Avatar
 
Trader Rating: 0
Join Date: Aug 2004
Location: Columbus, GA
Posts: 192
Default

So I need to go ahead & get the HPtuner, then. Or maybe check for a frog stuck in the fuel filter.
__________________
http://www.atomicred.com/jaek/vette/.../sig_vette.jpg
01 C5, A4 w/3.15, Soon-to-be unstockified.
GA_Driver is offline   Reply With Quote
Old 08-24-2004, 11:11 AM   #7
TECH Enthusiast
 
Trader Rating: 0
Join Date: Jul 2003
Location: Ankeny, IA
Posts: 505
Default

GA_Driver check with another A4 driver. That may be normal. A friend of mine with an A4 Fbody says his idle was around there stock. I would have thought an A4 would idle higher than an M6, but I've never owned one or paid attention to the ones I've ridden in. You're probably fine.
__________________
1999 C5 - TFS 215 Heads, F13 112, FAST 90, LS2 TB, LT Headers, Corsa
2008 G8 GT - CAI
2014 Cruze 2.0 TD

99C5JA is offline   Reply With Quote
Old 08-24-2004, 11:42 AM   #8
On The Tree
 
GA_Driver's Avatar
 
Trader Rating: 0
Join Date: Aug 2004
Location: Columbus, GA
Posts: 192
Default

I'll hit corvetteforum (ugh) and see what Search turns up. And thanks for replying, I appreciate it!
__________________
http://www.atomicred.com/jaek/vette/.../sig_vette.jpg
01 C5, A4 w/3.15, Soon-to-be unstockified.
GA_Driver is offline   Reply With Quote
Old 08-24-2004, 11:42 AM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply


Tags
2008, c5, cobalt, idle, low, ls2, surging


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


 

All times are GMT -5. The time now is 07:38 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details