Loss of power
#1
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Loss of power
My car drive good but feel like a little lost of power...cel is throwing a code of 52...knock sesnor1...does replacing the knock sensor actually turn off my cel??
#2
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try searching some. this is the first thing i found
https://www.clublexus.com/forums/per...ode-052-a.html
https://www.clublexus.com/forums/per...ode-052-a.html
#3
Lead Lap
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Knock sensor CEL triggers limp home mode to protect the engine. When it happened on mine, it was a huge loss of power, probably 50% or more. I'm glad I procrastinated on replacing the sensors to the tune of $700 (shop estimate, most of it being for the ~10 hrs of labor) on my SC400 while trying various things in hopes of it not being the sensor itself. Barring future KS flare-ups that would disprove the all but certain resolution, it ended up being the ECU was damaged at those input pins from capacitor leakage. The connection was almost completely corroded through and losing the signal from time to time. Everything else I was chasing down and trying to find a pattern to was just coincidence.
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Hrm don't seem to have those problems stated in the thread...and my cel stay on ...Once its on.....don't wanna spend money on the knock sensor plug n wire if that's not the case because those are pretty expensive
#7
Lead Lap
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One of the first things I was told is bad gas (non-premium) can trigger the knock sensors. Running some fuel system treatment (Lucas, Techron, etc.) would be worth a try.
I didn't necessarily have the problems stated in the ECU thread, either. I bought the capacitors to do pre-emptive repair work, figuring they would begin leaking before long. It wasn't until the tech took the lower cap out down by the input terminals that the major damage was revealed.
I didn't necessarily have the problems stated in the ECU thread, either. I bought the capacitors to do pre-emptive repair work, figuring they would begin leaking before long. It wasn't until the tech took the lower cap out down by the input terminals that the major damage was revealed.
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#8
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Oh....I jus open my ecu up...and the caps still look new...well the ecu in general still look new....no burn spot....is there a thread to check out the knock sensor or replaced?
#9
Lead Lap
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If you plan to keep the car for any length of time and don't know for a fact that your ECU has already had the capacitors replaced, I would start there since they'll probably be bad before long if not already. You might get lucky and also solve the knock sensor problem in the process.
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