False knock retard readings suck! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Thread Tools Search this Thread
Old 08-17-2004, 09:33 PM   #1
Senior Member
Posts like a Camaro
Thread Starter
Join Date: Nov 2002
Location: Ottawa,Can
Posts: 1,038
Thanks: 0
Thanked 0 Times in 0 Posts
Paulnold is on a distinguished road
Default False knock retard readings suck!

During an autotap scan while out cruising today,I noticed some high knock retard readings and was like holy shitake.I decided to head home and go over my logged scans to see if i could come up with the reason why i was getting so much knock this time out and had zero knock on a few prior scans,Well all readings seem to be in the norm except KR,I then pulled out my service manual and came across this"The Traction Control system Desired Torque signal from the EBTCM may cause Knock retard to display a value greater than O.O if traction control is active"Boy was i happy to read that ,went back out for a lap around the block with TC off and knock readings where back to 0.Autotap,paired up with service manuals are priceless.
Paulnold is offline   Reply With Quote
Old 08-17-2004, 09:40 PM   #2
Senior Member
True Car Nut
Join Date: Dec 2002
Location: Sauk Centre, MN
Posts: 5,458
Thanks: 0
Thanked 0 Times in 0 Posts
OLBlueEyesBonne is on a distinguished road

Yup, when I had my 1999 auto-tapped I forgot to turn the TC off and in first gear with WOT timing was being pulled like 18*. Finally realized it and turned it off. Was getting 3* pulled then. The GP guys there couldn't belive their eyes. Their TC is ABS based, and doesn't pull timing. When we checked the KR readings though, they showed 0 knock sensed.
OLBlueEyesBonne is offline   Reply With Quote
Old 08-17-2004, 09:50 PM   #3
Junior Member
Join Date: May 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
SSEi95 is on a distinguished road

Durring our meet this ast satuday I had mine hooked up to my laptop the whole time. The most I saw was 0.2 (uphill at 20mph under WOT).

The funny thing is I was riding with Hankster (newer member here) the other day while checking out his ride with my scanner and he wasputting up KR everytime he hit aan onramp at half throttle. And he has a 95 SE... go figure?
SSEi95 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Sources of knock (false?) J Wikoff 1992-1999 21 09-19-2005 12:14 AM
False Wall / False Floor Tutorial And My Current Install ibanezcollector Audio (and aftermarket electronics) 3 03-26-2005 06:23 PM
knock knock knock L27Buick 1992-1999 7 09-17-2004 04:23 PM
Knock Knock, engine knock? Spiral 1992-1999 5 05-23-2004 10:08 PM
KR without Knock> Not even false knock? streetracer Performance, Brainstorming & Tuning 1 08-18-2003 02:08 PM

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 Off
Refbacks are Off

All times are GMT -4. The time now is 08:28 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.