What if i have zero knock count?
04-07-2007, 11:35 AM
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Car: 90 Chev Suburban 4x4, 5.3L, th400
Engine: 2002 5.3 Vortec swapped in.
Transmission: Stock th400
Axle/Gears: 10blt front/ 14bltSF rear 3.73 gears.
What if i have zero knock count?
I drove around for about 20 minutes with one of those little autoxray's, And never got a knock out of it. Could this possibly indicate a faultyknock sensor? Or is it sometimes normal to have zero knock? Thanks for the help!
04-10-2007, 11:45 AM
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Car: 84 Z28 H.O. w/Megasquirt II
Engine: semi-stock L69
Transmission: T-5 non W/C
Axle/Gears: 3.73 open
Re: What if i have zero knock count?
You could advance the timing enough to force it to knock, and see if you record counts then. That's how the stock ecm's test themselves.
04-10-2007, 01:41 PM
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Car: 90 Chev Suburban 4x4, 5.3L, th400
Engine: 2002 5.3 Vortec swapped in.
Transmission: Stock th400
Axle/Gears: 10blt front/ 14bltSF rear 3.73 gears.
Re: What if i have zero knock count?
its set at 4* base. You soppsoe that if i were to tap on the block with like a wrench or hammer that it would register as a knock?
04-10-2007, 02:34 PM
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Join Date: Mar 2006
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Car: 90 Chev Suburban 4x4, 5.3L, th400
Engine: 2002 5.3 Vortec swapped in.
Transmission: Stock th400
Axle/Gears: 10blt front/ 14bltSF rear 3.73 gears.
Re: What if i have zero knock count?
Maybe i'll run up and try that real quick then. Of coarse that wouldent casue a rough idle/ idle surge situation anyway but i suppose it would be good to find out anyway.
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