Knock Sensor/Wiring

MarkLinRacing · 03-23-2010, 07:29 AM

So I have my CEL light on.

Pulled the diagnosis code and said something about knock sensor or possibly knock sensor wiring.

I heard from a friend that previously owned a MKIII Supra that apparently these knock sensors on the 7MGTE like to crap out.

I don't want to fix it unless it's causing an issue, currently the car under load, off load and at idle.

Another friend mentioned that my car might be slower than it actually is because the car might be running in "safe mode" because it won't know if it's experiencing knock or not.

I'm not familiar with how these ECUS are programmed. I would appreciate any insight.

Thanks!

cre · 03-23-2010, 12:42 PM

Our knock sensors are pretty robust actually. More often than not the code 52 issue is due to wiring. Search "knock sensor rewire"... and yes, it can make the car run like piss depending on just how bad it is.

MarkLinRacing · 03-23-2010, 02:52 PM

Quote:

Originally Posted by cre

Our knock sensors are pretty robust actually. More often than not the code 52 issue is due to wiring. Search "knock sensor rewire"... and yes, it can make the car run like piss depending on just how bad it is.

Thanks, I found a thread about knock sensor/rewiring.

I should've searched first..

03-23-2010, 07:29 AM	#1
MarkLinRacing Stock Join Date: Nov 2009 Location: Canada Posts: 29	Knock Sensor/Wiring So I have my CEL light on. Pulled the diagnosis code and said something about knock sensor or possibly knock sensor wiring. I heard from a friend that previously owned a MKIII Supra that apparently these knock sensors on the 7MGTE like to crap out. I don't want to fix it unless it's causing an issue, currently the car under load, off load and at idle. Another friend mentioned that my car might be slower than it actually is because the car might be running in "safe mode" because it won't know if it's experiencing knock or not. I'm not familiar with how these ECUS are programmed. I would appreciate any insight. Thanks! __________________

03-23-2010, 12:42 PM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Our knock sensors are pretty robust actually. More often than not the code 52 issue is due to wiring. Search "knock sensor rewire"... and yes, it can make the car run like piss depending on just how bad it is. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Picture Of Knock Sensor Locations	ravenmaster	MKIII Supra	10	01-31-2012 03:37 PM
87 Turbo knock sensor issue	supraman7	MKIII Supra	5	03-05-2010 07:44 PM
Starting isssues and spark knock Q's	spudz29212MKIII	MKIII Supra	65	05-30-2008 06:44 PM
Engine knock @ 1700-2300	rstutler	MKIII Supra	8	03-07-2008 07:36 PM
Knock sensor..........ebay.	rnoswal	MKIII Supra	0	11-06-2005 07:24 PM