Where is the knock sensor on a Chevy 350?

Where is the knock sensor on a Chevy 350?

Remove the driver’s side wheel using the lug wrench. Reach through the wheel well into the engine, just above and to the left of the oil filter housing, and just below the third cylinder from the front of the engine. Place your fingers on the wiring harness connector on the side of the block. This is the knock sensor.

Where is the knock sensor on a 4.3 Vortec?

The single knock on the 1996 and later Vortec engines was located at the rear of the engine, below the driver’s side of the distributor. It was directly behind two rigid fuel lines leading to the intake manifold.

What would trigger a knock sensor?

The knock sensor detects abnormal combustion, known as spark knock, inside of the engine. Common causes of spark knock include low octane fuel, overly advanced ignition timing, abnormally high engine operating temperatures, and carbon buildup inside the engine’s combustion chambers.

Are there any knock sensor problems on GM trucks?

Knock Sensor Problems on GM Vehicles. Knock sensor problems are common on 1999-2007 Chevy Silverado, Express Van, Tahoe and Suburban trucks. Of course, this means that the GMC Sierra and Yukon of the same years have the same issues.

What are the codes for the knock sensor?

Eventually this turns on the check engine light and sets the codes P0332 and P0327. Note that often either one or the other code will set. Regardless if one or both codes are set, not only should the two original knock sensors be replaced, but you should also replace the harness.

Where are the knock and Ping sensors located?

It’s a piezoelectric automotive sensor that produces a small voltage signal when it hears internal engine noise that we often call knock and ping. This is why the location of the two sensors is a problem. In order to hear the engine noise reliably the sensors are buried under the intake manifold.