Huge knock count during cruise
Sep 17, 2008, 07:17 PM
#34
Evolving Member
Stupid question, but what oil are you running, and do you have noisy lifters? The older cars were prone to "phantom knock" due to the knock sensor picking up lifter noise, usualy at cruise/ part throttle. This sounds just like that.
I don't know how ECUFlash/EvoScan is, but on DSMLink you can disable the knock sensor below a certain threshold to combat this, based on throttle position or RPM. Is this possible for you guys?
I don't know how ECUFlash/EvoScan is, but on DSMLink you can disable the knock sensor below a certain threshold to combat this, based on throttle position or RPM. Is this possible for you guys?
Sep 17, 2008, 10:35 PM
#36
Evolving Member
iTrader: (10)
Join Date: Jan 2007
Location: league city, texas
Posts: 376
Likes: 0
Received 0 Likes
on
0 Posts
hey kouzman idk if you saw my post but did you happen to check your maf screen? i know it sounds stupid but that was what was causing my phantom knock at cruise/part throttle. hellcat can verify we were fighting with it for a few months before i noticed it....just trying to help bro...
Sep 18, 2008, 12:05 PM
#37
Evolved Member
iTrader: (6)
Join Date: Sep 2005
Location: NYC
Posts: 2,269
Likes: 0
Received 0 Likes
on
0 Posts
thanks man! I will check it again but I doubt that this is the case. Couple of weeks ago I cleaned the filter and I didn't see anything out of the ordinary. I will confirm my findings maybe tonight...
Sep 19, 2008, 02:33 PM
#38
Newbie
Join Date: Aug 2008
Location: Buffalo, NY
Posts: 52
Likes: 0
Received 0 Likes
on
0 Posts
Do you have a foam filter? Did you oil it when you cleaned it? I've randomly been getting knock lately too and i just cleaned and oiled my filter a couple weeks ago and was wondering if excessive filter oil could cause it...
Sep 20, 2008, 10:23 AM
#41
Only times I see low load cruise knock is either (A) right after I reflash, or (B) after the battery is disconnected. Anything that seems to reset the "learning" of the ecu tends to make it pick up knock like crazy, after about 10 minutes of driving it disappears completely.
I do however still get the occasional 3-4 counts when crossing the vac/boost threshold. No matter how much fuel/timing I add or subtract, it's always there. I've learned to live with it, although my throw out bearing seems to be a little noisier these days. Of course, I also have 70k on what I believe is still the stock clutch.
I do however still get the occasional 3-4 counts when crossing the vac/boost threshold. No matter how much fuel/timing I add or subtract, it's always there. I've learned to live with it, although my throw out bearing seems to be a little noisier these days. Of course, I also have 70k on what I believe is still the stock clutch.
Mar 14, 2009, 02:18 PM
#45
Evolved Member
Join Date: Apr 2008
Location: Sydney, Australia
Posts: 604
Likes: 0
Received 0 Likes
on
0 Posts
The easy thing to do is to take roughly 3 degrees out of that area of the map and see if the knock sum still happens. If it does, then it is fasle knock.
I would rule out clutch noise that most people are talking about. My car false knocked in the same regions and it is an auto! I raised the load threshhold a little for the knock control and no more problems. Before that I was in 36-knock land while cruising down the freeway like a Corolla.
I would rule out clutch noise that most people are talking about. My car false knocked in the same regions and it is an auto! I raised the load threshhold a little for the knock control and no more problems. Before that I was in 36-knock land while cruising down the freeway like a Corolla.