Chaffed Knock Sensor Wires....
- Thread starter bpd1151
- Start date
ecoboostsho
New member
If your knock sensor wires check out and the knock is fairly "new" I'm guessing you may be running in to winter gas blends. I mix E85 and BP 93 premium and in the summer easily see 4 degrees of advance (limited by the tune) on the knock gauge. Now with winter gas (even with mixing) it barely budges above 0 and I see spark retard in the 0-4 (with an occasional spike to 6) range. It happens to me every winter...I will probably switch over the 91 octane tune and just run 93 in it for the winter as I hate mixing when it's super cold.
ecoboostsho said:
The KR seems to have been there since I started tuning. I ran 87 for a while on the stock tune, then 93 for a bit, then tuned it. OAR was -.96 for what seems like an eternity. I started blending, 3 gallons of E-85 and the rest 93 Shell V-Power and OAR stayed consistent. However, currently OAR is going down, and is at -.81. I am thinking there may some winter blend at play as of now, due to the OAR going down, or I got a bad batch of E or the V-power. Not super sure, but will probably return to Sams Club 93 once this tank is empty, as that was always a consistent -.96 OAR.
ecoboostsho
New member
Thanks Z! I've been lurking on and off. Ended up buying a 2017 Victory Octane (motorcycle) and have been working on making that faster. Barely drove the SHO this summer...missed it though.
Sent from my XT1096 using Tapatalk
Sent from my XT1096 using Tapatalk
Post some pics of your build in the non-EB build section here
http://www.ecoboostperformanceforum.com/index.php/board,133.0.html
tune only, or boltons too?
http://www.ecoboostperformanceforum.com/index.php/board,133.0.html
tune only, or boltons too?
I was having a knock issue...7*....Torrie McPhail knew it was false, but I needed it back to zero so I can monitor on my WOT runs. He shared the link for this with me.
Today, I followed the diagrams step by step and found the driver's side knock sensor wires chaffed. I put a dab of rtv on the exposed wires and once it dried, I taped them up. It's tight working in there but it's fixed.
On my test drive, no knock. Ok, I had a hair, but I am on the stock tune with 87 in the tank. I can assure you that with my 93 Torrie tune, it runs cleaner. Whats even better, the trans that I thought had a bad torque converter shudder is fine. No more shudder. It was the knock sensor wires that were shorting, causing the knock and in turn causing the car to miss. It was an ignition miss not a transmission shudder. Thank you to everyone who contributed to this in making this an easy fix.
Today, I followed the diagrams step by step and found the driver's side knock sensor wires chaffed. I put a dab of rtv on the exposed wires and once it dried, I taped them up. It's tight working in there but it's fixed.
On my test drive, no knock. Ok, I had a hair, but I am on the stock tune with 87 in the tank. I can assure you that with my 93 Torrie tune, it runs cleaner. Whats even better, the trans that I thought had a bad torque converter shudder is fine. No more shudder. It was the knock sensor wires that were shorting, causing the knock and in turn causing the car to miss. It was an ignition miss not a transmission shudder. Thank you to everyone who contributed to this in making this an easy fix.
