Could this problem be from a tune or Cam degreeing?
#1
TECH Apprentice
Thread Starter
Join Date: Jun 2007
Location: UAE , Ajman
Posts: 352
Likes: 0
Received 0 Likes
on
0 Posts
#3
TECH Apprentice
Thread Starter
Join Date: Jun 2007
Location: UAE , Ajman
Posts: 352
Likes: 0
Received 0 Likes
on
0 Posts
When I go WOT see how the speedometer moves and how the RPM moves it moves fast then it slows then fast again then slows. notice at 5000 rpm how it stays there then it moves.
#4
TECH Fanatic
Join Date: Oct 2005
Location: Woodstock Ontario Canada
Posts: 1,379
Likes: 0
Received 0 Likes
on
0 Posts
The tach starts to slow down as your speed increases because your aerodynamic loasess are increaseing exponentially. The rate at which your speedo increases also solows due to the same reason.
I dont see a problem there whatsoever.
Enjoy your truck.
peace
Hog
I dont see a problem there whatsoever.
Enjoy your truck.
peace
Hog
#6
LS1Tech Sponsor
iTrader: (10)
Join Date: Feb 2003
Location: warsaw, in
Posts: 2,964
Likes: 0
Received 0 Likes
on
0 Posts
It is in the tune. Your ETC speed limit kicked in. It shut your throttle blade, then will report to send a command across the system bus to show vehicle overspeed on the dash and indicate a light.
Last edited by trever1t; 12-09-2008 at 06:22 PM.
#7
TECH Apprentice
Thread Starter
Join Date: Jun 2007
Location: UAE , Ajman
Posts: 352
Likes: 0
Received 0 Likes
on
0 Posts
Trending Topics
#10
LS1Tech Sponsor
iTrader: (10)
Join Date: Feb 2003
Location: warsaw, in
Posts: 2,964
Likes: 0
Received 0 Likes
on
0 Posts
There is a setting that allows the ECM to be in control of the speed limit, OR another module. ON YOUR application it is set to OTHER module, so no matter what you set YOUR ECM values to it will still have a speed limit unless you turn it to be ECM in charge. I have tuned trucks with tvs2300 on them and a few with ecs supercharger kits where they have been all the way up to 162mph and it NEVER throws that light when you delete that other part. It is set to CUT THROTTLE not fuel or spark so that is why it is doing that.
Last edited by trever1t; 12-09-2008 at 06:21 PM.
Thread
Thread Starter
Forum
Replies
Last Post
mr03silverado
GMT 800 & Older GM General Discussion
4
06-26-2016 06:05 AM
lxcoupe
GM Drivetrain & Suspension
17
07-14-2015 10:14 PM
GreyChevy
Tuning, Diagnostics, Electronics, and Wiring
1
07-07-2015 08:57 PM