Notices
Drivetrain Gearbox, Diffs & Driveshafts etc

Red Lights on a Knock Link

Thread Tools
 
Search this Thread
 
Old Nov 21, 2003 | 04:38 PM
  #1  
Mr Sinister's Avatar
Mr Sinister
Thread Starter
Scooby Newbie
 
Joined: Jul 2003
Posts: 27
Likes: 0
Post

Hi all, a bit long winded..... but the red lights on my knocklink seem to be appearing a little too often for my liking, I've got a P1 with HKS FMIC, Plugs, Air Filter, tek map with water injection running 1.45 boost, make sure that I only use optimax but am now becoming concerned, any advice would be greatly appreciated, thanks
Reply
Old Nov 21, 2003 | 06:27 PM
  #2  
LoFi's Avatar
LoFi
Scooby Regular
 
Joined: Feb 2001
Posts: 778
Likes: 0
From: Surrey
Post

Drive very gently and get it re-mapped asap. Knocklink rarely lies. It could be a huge number of things but you mapper will be able to see what is going on. I had a similar thing which turned out to be oil contamination in the IC, which was reducing the RON of the fuel causing knock. I've ended up with a more conservative map, with less advance. But it keeps the amber and red lights quiet.

LoFi
Reply
Old Nov 21, 2003 | 07:20 PM
  #3  
Dark Blue Mark's Avatar
Dark Blue Mark
Scooby Regular
 
Joined: Apr 2002
Posts: 7,333
Likes: 0
From: Bournemouth - 5x Ex Impreza owner. 997 GT3 CS.
Post

Do an ECU reset. You may find your MAF is shagged and running lean. After reset, if the idle is crap and it tries to stall, it may be the MAF. See the current thread on Gen Technical about idle.

MB
Reply
Old Nov 23, 2003 | 01:08 AM
  #4  
SailorMike's Avatar
SailorMike
Scooby Newbie
 
Joined: Nov 2003
Posts: 7
Likes: 0
Post

If your knock sensor isn't mounted on top of the gearbox it may register unwanted noise.
Reply
Old Nov 23, 2003 | 10:28 AM
  #5  
Dark Blue Mark's Avatar
Dark Blue Mark
Scooby Regular
 
Joined: Apr 2002
Posts: 7,333
Likes: 0
From: Bournemouth - 5x Ex Impreza owner. 997 GT3 CS.
Post

Why would you want it on the gearbox?

The chance of picking up det frequency from there would be pretty slim I would have thought. Not sure what actual Hz frequency det is, but you may even start picking up gearbox harmonics if you put it there?

The agreed place to put it, is on the block over cyl no 3 (or might be 4, cant rememeber)

MB
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JimBowen
ICE
5
Jul 2, 2023 01:54 PM
SilverM3
ScoobyNet General
8
Feb 24, 2021 01:03 PM
shorty87
Full Cars Breaking For Spares
19
Dec 22, 2015 11:59 AM
Pro-Line Motorsport
Car Parts For Sale
1
Nov 30, 2015 05:52 PM
alcazar
Non Scooby Related
24
Sep 29, 2015 09:07 AM




All times are GMT +1. The time now is 08:55 PM.