1996 GMC K2500 Suburban 7.4L. I recently started monitoring Knock Sensor counts via the DashCommand app on my phone. I recall looking at them before I knew what they were (there are two in the 7.4). And, like other underhood components in this particular Suburban, the wire to at least one of the sensors shows evidence of having been visited by Mr. or Ms. Packrat long ago.
I just looked again, and sure enough, not only is the wire on the driver's side chewed, the rubber boot on the sensor itself is in rough shape.
The connector on the passenger side is held on with a zip tie, but the wire appears to be unscathed.
I searched online for knock sensor connectors, and the only ones I could find have only one connector with a bare wire at the other end. To me, it looks like the connector should have a fitting on both ends, with a boot of some sort on the sensor.
Does anyone here have any experience with these things? At a minimum, I want to replace the driver's side wire and connector, as I'm thinking the exposed wire could lead to a short and therefore a faulty reading on DashCommand. Any help is appreciated.
While I'm here, what time interval do the knock sensor counts represent? The normal range is 0 - 255, but is that per second, minute, or hour? I looked in the Shop Manual and couldn't locate that particular bit of information. Thanks.
I just looked again, and sure enough, not only is the wire on the driver's side chewed, the rubber boot on the sensor itself is in rough shape.
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The connector on the passenger side is held on with a zip tie, but the wire appears to be unscathed.
You must be registered for see images attach
I searched online for knock sensor connectors, and the only ones I could find have only one connector with a bare wire at the other end. To me, it looks like the connector should have a fitting on both ends, with a boot of some sort on the sensor.
You must be registered for see images attach
Does anyone here have any experience with these things? At a minimum, I want to replace the driver's side wire and connector, as I'm thinking the exposed wire could lead to a short and therefore a faulty reading on DashCommand. Any help is appreciated.
While I'm here, what time interval do the knock sensor counts represent? The normal range is 0 - 255, but is that per second, minute, or hour? I looked in the Shop Manual and couldn't locate that particular bit of information. Thanks.