EvolutionM - Mitsubishi Lancer and Lancer Evolution Community

Notices
ECU Flash

High knock count on idle revving *log inside*

Thread Tools
 
Search this Thread
 
Old Apr 2, 2011, 01:10 PM
  #1  
Evolved Member
Thread Starter
iTrader: (8)
 
stunt2's Avatar
 
Join Date: Nov 2010
Location: Georgia
Posts: 752
Likes: 0
Received 0 Likes on 0 Posts
Exclamation High knock count on idle revving *log inside*
Any suggestions why can it be such high numbers ?

stunt2 is offline  
Reply Like
Old Apr 2, 2011, 01:28 PM
  #2  
Evolved Member
iTrader: (10)
 
Guerillah's Avatar
 
Join Date: Jun 2004
Location: Tucson, AZ
Posts: 760
Likes: 0
Received 1 Like on 1 Post
Is your downpipe rattling against the transfer case?
Guerillah is offline  
Reply Like
Old Apr 2, 2011, 01:37 PM
  #3  
Evolved Member
Thread Starter
iTrader: (8)
 
stunt2's Avatar
 
Join Date: Nov 2010
Location: Georgia
Posts: 752
Likes: 0
Received 0 Likes on 0 Posts
dunno, can't hear any wierd noises inside the car
stunt2 is offline  
Reply Like
Old Apr 2, 2011, 02:32 PM
  #4  
Evolved Member
iTrader: (30)
 
JohnBradley's Avatar
 
Join Date: Jan 2004
Location: Northwest
Posts: 11,399
Received 70 Likes on 52 Posts
The normal non catastrophic list-

Lifters arent bled right
exhaust rattles
balance shaft delete
wrong plugs
bad knock sensor

Catastrophic-

Rod bearings
Main bearings (can check this vs oil pressure)
Piston slap


Log knock voltage as well.

aaron
JohnBradley is offline  
Reply Like
Old Apr 2, 2011, 03:35 PM
  #5  
Evolved Member
iTrader: (21)
 
SEEnoEVO's Avatar
 
Join Date: Dec 2006
Location: D
Posts: 544
Likes: 0
Received 1 Like on 1 Post
I was getting strange numbers when my knock sensor wasn't connected. May want to check that.
SEEnoEVO is offline  
Reply Like
Old Apr 3, 2011, 12:25 PM
  #6  
EvoM Guru
iTrader: (1)
 
211Ratsbud's Avatar
 
Join Date: Oct 2010
Location: Watertown, NY
Posts: 4,280
Received 41 Likes on 40 Posts
I have found through my own tuning, that map smoothing is quite important for idle revving. Its one of hte more tedious parts to tune IMHO and I still dont have it right. Depending how hard you press the pedal, and how hard you lift.. just my 2 cents
211Ratsbud is offline  
Reply Like
Old Apr 7, 2011, 10:35 AM
  #7  
Evolving Member
iTrader: (2)
 
soon2bEVOIX's Avatar
 
Join Date: Aug 2009
Location: neverland
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Guerillah
Is your downpipe rattling against the transfer case?
Is this a common problem. I am having the same issue.....
soon2bEVOIX is offline  
Reply Like

Trending Topics

Old Apr 7, 2011, 12:41 PM
  #8  
Evolved Member
iTrader: (6)
 
andrewzaragoza's Avatar
 
Join Date: Mar 2007
Location: DFW, TX
Posts: 1,019
Likes: 0
Received 2 Likes on 2 Posts
^ shouldn't happen if you bought a downpipe that was designed for acd equipped cars.
andrewzaragoza is offline  
Reply Like
Old Apr 7, 2011, 12:44 PM
  #9  
Evolving Member
iTrader: (3)
 
goodhart's Avatar
 
Join Date: Oct 2009
Location: Isanti, MN
Posts: 219
Likes: 0
Received 0 Likes on 0 Posts
My knock light comes on when I hit the two-step, but not when only revving to 3700ish rpm
goodhart is offline  
Reply Like
Old Apr 7, 2011, 12:57 PM
  #10  
Evolved Member
iTrader: (6)
 
andrewzaragoza's Avatar
 
Join Date: Mar 2007
Location: DFW, TX
Posts: 1,019
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by goodhart
My knock light comes on when I hit the two-step, but not when only revving to 3700ish rpm
to fix that smoothen the cells around the rev limit area.
andrewzaragoza is offline  
Reply Like
Old Apr 7, 2011, 01:44 PM
  #11  
Evolving Member
iTrader: (2)
 
soon2bEVOIX's Avatar
 
Join Date: Aug 2009
Location: neverland
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by andrewzaragoza
^ shouldn't happen if you bought a downpipe that was designed for acd equipped cars.
Yeah that's prob my problem. I bought the DP from a buddy who sells Evo's and puts them back stock. So I have no clue what brand of if it's for ACD equipped cars.
soon2bEVOIX is offline  
Reply Like
Old Apr 7, 2011, 02:29 PM
  #12  
Evolved Member
iTrader: (6)
 
andrewzaragoza's Avatar
 
Join Date: Mar 2007
Location: DFW, TX
Posts: 1,019
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by soon2bEVOIX
Yeah that's prob my problem. I bought the DP from a buddy who sells Evo's and puts them back stock. So I have no clue what brand of if it's for ACD equipped cars.
if its barely touching i would suggest just flattening the dp a bit.
andrewzaragoza is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
My Red Evo 4 GSR
MaRgE
Evo Show / Shine
20
Mar 1, 2015 08:48 AM
FS: Samco Hose Kit (black)
voidhawk
For Sale/WTB - Engine / Drivetrain / Power
13
Jul 12, 2013 09:07 PM
Advan RS 18x9+29 GTR
azevo9
For Sale - Wheels / Tires
10
Nov 27, 2008 08:03 PM
Shots of the Evo in downtown PHX
azevo9
Evo Show / Shine
112
Nov 20, 2008 02:19 PM
Tags
Back to Subforum
ECU Flash
View Next Unread
Setting base timing with ECU flash *IN A DSM*




Advanced Search
Quick Reply: High knock count on idle revving *log inside*


Reply Closed Thread Share

All times are GMT -7. The time now is 04:20 PM.