Knock Sensor readings

[glock-coma]

Here's a pic of the sensor /location

[Larrylu]

Interesting, have you spoken to LMS regarding the KR readings?


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My numbers are from a custom PID in Torque. I don't think any of our tuners have an affection for Torque so I would guess it would be taken lightly. I'm thinking that it is pretty credible but I'm not qualified.

[Larrylu]

If there is only one sensor, I've found it on the left side. If there are two of them and one of them is on the right side, I haven't found that one yet. Not sure it exists though.

[FoMoCoSHO]

Interesting, have you spoken to LMS regarding the KR readings?


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My numbers are from a custom PID in Torque. I don't think any of our tuners have an affection for Torque so I would guess it would be taken lightly. I'm thinking that it is pretty credible but I'm not qualified.

As far as WOT knock is concerned the SCT X-4 seems to agree with my Torque gauge.

[SHOnUup]

If there is only one sensor, I've found it on the left side. If there are two of them and one of them is on the right side, I haven't found that one yet. Not sure it exists though.

The one on the right is there. Hard to spot from the top as it could be behind another set of wires from that angle. They are much easier to see once the CAI is pulled out.

When I asked LMS about monitoring with torque and other handheld devices they said they don't trust any of them at all. Only way they would adjust tunes is by dyno as they don't think any other device out is accurate enough to safely tune by.

[ShoBoat]

If there is only one sensor, I've found it on the left side. If there are two of them and one of them is on the right side, I haven't found that one yet. Not sure it exists though.

The one on the right is there. Hard to spot from the top as it could be behind another set of wires from that angle. They are much easier to see once the CAI is pulled out.

When I asked LMS about monitoring with torque and other handheld devices they said they don't trust any of them at all. Only way they would adjust tunes is by dyno as they don't think any other device out is accurate enough to safely tune by.

What is their feelings on FORScan? Have you tried to log with it instead? Just wondering, although the readings seem close when I have done it.


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[SHOnUup]

If there is only one sensor, I've found it on the left side. If there are two of them and one of them is on the right side, I haven't found that one yet. Not sure it exists though.

The one on the right is there. Hard to spot from the top as it could be behind another set of wires from that angle. They are much easier to see once the CAI is pulled out.

When I asked LMS about monitoring with torque and other handheld devices they said they don't trust any of them at all. Only way they would adjust tunes is by dyno as they don't think any other device out is accurate enough to safely tune by.

What is their feelings on FORScan? Have you tried to log with it instead? Just wondering, although the readings seem close when I have done it.


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Laptop is better, felt like they just didn't like the idea of adjusting tunes outside the dyno(they may under special request, as they have many over the years to try). But the changing variables in weather conditions, road conditions, and scantool,  I bet are things that make it hard to stand 100% behind a tune outside the shop.

[ShoBoat]

Ok really weird stuff going on today. With warmer temps like in the mid 90s no KR whatsoever. I mean nada, nothing. I am still getting timing being added occasionally, but no KR. New tank of gas tonight but I started noticing it earlier in the day. Any thoughts?


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[SHOnUup]

Ok really weird stuff going on today. With warmer temps like in the mid 90s no KR whatsoever. I mean nada, nothing. I am still getting timing being added occasionally, but no KR. New tank of gas tonight but I started noticing it earlier in the day. Any thoughts?


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Sounds great...how'd the good ol butt dyno feel about it. Had some weird kr in the heat a few days ago with the A/C on but none since...it was 90* + at least 90% humidity then....

[FoMoCoSHO]

I noticed the exact same thing yesterday. Iat2 temps over 170, no knock.

[SHOnUup]

170* Wow, that's hot, most I've seen is 150*. With these findings you think humidity might play a bigger role than heat?

[ShoBoat]

Mine heat soaked to 140 yesterday. Got in it and nada no KR. The but dyno felt good, it's just weird with increased ambient temp.


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[FoMoCoSHO]

Yeah, she got hot but recovered quickly.

I was shocked that I had no knock.

Maybe the ecu becomes a tad conservative under those condition and just doesn't get to that point.

[ShoBoat]

Yeah, she got hot but recovered quickly.

I was shocked that I had no knock.

Maybe the ecu becomes a tad conservative under those condition and just doesn't get to that point.

It's possible, even being tied to ambient temps.


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[Larrylu]

I think I finally have a definite answer for my random occasional KR spikes and it's not tune related, and it's not octane related either!   On a recent short (6 hrs.) trip I was able to finally tie my KR spikes to a driving situation not just once but twice.  It is triggered by a tranny malfunction that I have been dealing with for years. The tranny "slip/bang" occurrences used to be real bad but the valve body TSB made it about 90% better and Ford won't fix the suspect sensors that I'm blaming for the remaining problem because it's not readily reproducible. I've been living with the occasional symptoms for a long time.  I'm not sure why the tranny screw up causes a momentary high KR reading but now that I know it does, I can just ignore the reading and reset the KR gauge. For the last couple of months I have been running everything from stock to LME 4+ 3BAR and monitoring my readings.  A few days ago I finally reloaded my 4X tune and oh my how sweet it is. It's great to have my eco-beast back!