Knock sensor bypass datalogging
Thread Starter
Melting Slicks
Joined: Nov 2000
Posts: 2,469
Likes: 6
From: Winchester Ontario
Knock sensor bypass datalogging
Thanks to forum member JOHN89 and his help with the bypass of my knock sensor, I did some datalogging today. With the sensor enabled, I was seeing knock counts and knock retard. I have believed this to be false knock as it was occurring on my old engine.
With the knock sensor disabled, it showed zero counts, zero knock and no codes. Thanks JOHN89
Oh, here's the hazards of datalogging on the tires.
I'm 6'1" and I counted 21 paces first gear and 54 paces second gear. Not feet, but paces which would probably be closer to 3 feet to a pace.
**EDIT** I didn't warm the tires up at all, just a hard launch and I know there's a huge gap between first and second, I wasn't trying to leave the longest marks, just doing a scan run
With the knock sensor disabled, it showed zero counts, zero knock and no codes. Thanks JOHN89
Oh, here's the hazards of datalogging on the tires.
I'm 6'1" and I counted 21 paces first gear and 54 paces second gear. Not feet, but paces which would probably be closer to 3 feet to a pace.
**EDIT** I didn't warm the tires up at all, just a hard launch and I know there's a huge gap between first and second, I wasn't trying to leave the longest marks, just doing a scan run
Last edited by black_89_vette; Aug 20, 2008 at 04:19 PM.
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
Maybe I don't get it? If you disabled the knock sensor, doesn't it stand to reason there would be no knock retard and no knock counts? That doesn't mean there's no knock though???
What do you think was causing the false knock?
What do you think was causing the false knock?
Thread Starter
Melting Slicks
Joined: Nov 2000
Posts: 2,469
Likes: 6
From: Winchester Ontario
Well, the knock sensor was bypassed therefore the computer saw no knock counts or knock retard.
There may still have been knock, but all the while I am thinking it has been false knock. The datalog today proved to me that the knock sensor bypass worked, which is what I was testing.
There may still have been knock, but all the while I am thinking it has been false knock. The datalog today proved to me that the knock sensor bypass worked, which is what I was testing.
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Team Owner
Joined: Jan 2003
Posts: 20,320
Likes: 248
From: Summerland B.C. Canada
Agent, this is the brief page I made up quickly to bring to my mechanic. It shows posts and PM's from JOHN89 and a little diagram as well.
Linky.
Linky.
Team Owner
Joined: Jan 2003
Posts: 20,320
Likes: 248
From: Summerland B.C. Canada
Melting Slicks
Joined: Jan 2008
Posts: 2,065
Likes: 1
From: Jasper Texas
I'm bringing this thread back up, about to do the same thing.
Ld85: You say the ground on our '85s is brown though, not black as shown here?:
http://www.inthehook.com/paul.html
Ld85: You say the ground on our '85s is brown though, not black as shown here?:
http://www.inthehook.com/paul.html
