In this Video I show you how to change the Knock Sensors in my 1992 Corvette. While the car is jacked up I do an Oil Change at the same time and talk about Mobile 1 Synthetic Oil.
With the knock sensors removed is a good time to do a coolant flush,. The service manual recommends that you remover the knock sensors to get all the bad stuff out of the block when flushing the coolant
Great how to video, I followed your instructions. The two knock sensors are in the same location on my 1994 Z28 5.7L. If the sensors are the originals like mine were, its important to first spray around the top of the sensors threads with rust buster / WD 40 and allowed to soak into the threads.
High idle, runs rough, rev limit around 3k rpm. Speedo reads ZERO. AGH! Thank you SO MUCH! I never knew that I could read the codes without a tool. Code C72. Knock sensors tomorrow, THAT'S A START
I have a 92 with 56000 miles on it. Recently I have been having a stall issue after 15 minutes of idling or driving and I see a code for H43 which is for a knock sensor. Knock sensors wouldn't cause the computer to shut down the engine would they? I'm also leaning towards a fuel pump but I need to test that first. Any help you can be would be greatly appreciated.
Appreciate the video but was disappointed as I wanted to see how much coolant drained from the block once the sensor was removed, and have the appropriate sized container at the ready. I've already drained the radiator and removed the thermostat. It's not in the best position to drain without making a mess. I was thinking of placing a funnel directly under the sensor and directing the flow into a pan below. We'll see how it goes...
Hi, excellent video, but I have a question, I have a 84 vette (CFI) I found just 1 sensor on the passenger side... but a bolt is in the driver side location... is this normal?
Yes the check engine light would come on about 15 seconds after a startup after the car would be sitting more than about 4 hours. After replacing the sensors the problem went away!
