Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Mustang Forums
2011-2014 Mustangs
Engine/Tuning
High knock sensor reading 18+
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="j-wag" data-source="post: 15700375" data-attributes="member: 187830"><p>I had a similar issue when getting my tune. I was getting all kinds of false knock. I checked my exhaust initially as it is one of the most common sources of false knock. Just like you I didn't find anything obvious. No signs of any exhaust components contacting the chassis and everything looked to have plenty of clearance.</p><p></p><p>But after a few frustrating weeks of trying a bunch of other things to cure the issue, i decided to take another look at the exhaust before throwing in the towel. </p><p></p><p>While under the car I used a rubber mallet and hit the exhaust in several spots and noticed a very very faint buzzing sound coming from the passenger side. Spend close to an hour trying to figure out where the buzzing noise was originating from, I was never able to pinpoint it. </p><p></p><p>I ended up loosing all of the exhaust bolts from the cats back and adjusted/realigned everything while trying to allowing the exhaust to sit where it wanted to naturally. Torqued the bolts to ford's spec and proceeded to tap on the exhaust again and I was not able to reproduce the buzzing noise. </p><p></p><p>I immediately went out to data log and all false knock was gone.</p><p></p><p>If nothing else cures your issue it might be worth looking at the exhaust again, as with my car there were no signs of the exhaust causing false knock and I looked it over meticulous the first time. </p><p></p><p></p><p></p><p></p><p>Sent from my iPhone using svtperformance.com</p></blockquote><p></p>
[QUOTE="j-wag, post: 15700375, member: 187830"] I had a similar issue when getting my tune. I was getting all kinds of false knock. I checked my exhaust initially as it is one of the most common sources of false knock. Just like you I didn't find anything obvious. No signs of any exhaust components contacting the chassis and everything looked to have plenty of clearance. But after a few frustrating weeks of trying a bunch of other things to cure the issue, i decided to take another look at the exhaust before throwing in the towel. While under the car I used a rubber mallet and hit the exhaust in several spots and noticed a very very faint buzzing sound coming from the passenger side. Spend close to an hour trying to figure out where the buzzing noise was originating from, I was never able to pinpoint it. I ended up loosing all of the exhaust bolts from the cats back and adjusted/realigned everything while trying to allowing the exhaust to sit where it wanted to naturally. Torqued the bolts to ford's spec and proceeded to tap on the exhaust again and I was not able to reproduce the buzzing noise. I immediately went out to data log and all false knock was gone. If nothing else cures your issue it might be worth looking at the exhaust again, as with my car there were no signs of the exhaust causing false knock and I looked it over meticulous the first time. Sent from my iPhone using svtperformance.com [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Mustang Forums
2011-2014 Mustangs
Engine/Tuning
High knock sensor reading 18+
Top