How do you do that?

Please let me know.

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89Iroc, 305 TPI, WC T5, 3.08 Posi, Headers, Hooker Y-Pipe, 3 inch over the axle, Flowmaster 80, No Cat, Aluminium Driveshaft, Ported Plenum, Air Foil, K&N, All free mods,

 

I don't know how to test it, but think of it this way:

The knock sensor is just a piece of crystal that gets excited at a specific frequency (pinging). It doesn't wear out like something mechanical can.

So the chances of it being bad are quite low in my opinion. The wires connecting it could have a break in them, so check it visually for wear.

 

Thanx Alex for your suggestion.

I had the car up last night and I turned th eignition to On position and I tested the wire at the knock sensor. It showed a very week/low readnig. I know for sure that it was not .5v as I think it should be.

Does anybody else know if thta .5v should always stay on the wire or not when the ignition is on?

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89Iroc, 305 TPI, WC T5, 3.08 Posi, Headers, Hooker Y-Pipe, 3 inch over the axle, Flowmaster 80, No Cat, Aluminium Driveshaft, Ported Plenum, Air Foil, K&N, All free mods,

 

In the old days, we used to hook up a timing light, run the engine and take a small ball peen hammer and lightly rap on the exhaust manifold while watching the timing marks to see if they retard.

Now days, I just hook up the scan tool and it'll show whether or not it detecting spark knock.

BTW, are you experiencing a spark knock problem?

[This message has been edited by paulo57509 (edited October 30, 2001).]