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Knock Sensor going bad again?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MudFrog, Jul 15, 2004.

  1. MudFrog

    MudFrog 1/2 ton status

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    Ok, I replaced my knock sensor last year and it fixed the issue I was having at the time. Well now here it started again yesterday, the exact same problem. How do I test the knock sensor? It's to expensive to replace if I don't know it's the problem.
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    One of the factory tests is to hook up a scanner, and tap the block near it with a hammer. Watch for knock counts to increase.
     

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