Knock Sensor Question
Posted 22 July 2019 - 09:06 AM
Timing is set to 10BTDC with the Vac advance unhooked and the motor warm.
I can unplug the Knock sensor and watch the timing and it doesn't retard any, it doesn't change with or without the Knock sensor harness plugged in.
It stays at a steady 10 degrees with the Vac unhooked and advances with the Vac plugged up while revving.
I just want someone to confirm my suspicion as to the Knock sensor being faulty.
Also, I've hunted for one several different times and cannot find a stock one. Can anyone confirm that the 1g DSM knock sensors work with our motors?
Posted 22 July 2019 - 03:18 PM
Zoom clutch, Fidanza flywheel, Stedebani shifter, KSport coilovers, ST swaybars, abs delete, a/c delete, cruise delete, JVE, BSEK, TEP steel brake lines, LSP braided cooler lines, CX Racing radiator, MK1 silicone hoses, MK1 pullies, *DM hard pipes & intercooler,14G turbo, ported exh. manifold, MAF Translator, 3.5" GM maf, Turbo XS RFL bov, *DM 3" exhaust, Cusco front strut bar, TEP rear strut bar, Enkei 92's, HKS turbo timer, AEM wideband, AEM boost gauge, AEM oil pressure gauge, SPA fuel regulator, Hallman boost controller
<SQ Garage> http://www.starquestgarage.com/
Posted 22 July 2019 - 03:25 PM
Am I right by thinking the timing should retard by unplugging the Knock sensor while running?
Posted 22 July 2019 - 05:03 PM
Edited by croquest87, 22 July 2019 - 05:06 PM.
Posted 23 July 2019 - 07:03 AM
I didn't know if there was a different test than the ones I was reading or if my sensor was indeed bad.
I'll keep searching and see if I can come up with any other test procedures.
I'll give your idea a shot too and see if it changes anything while at a idle.
I'm just trying to get the things I haven't checked out yet tested before I finally tag and insure it
Posted 24 July 2019 - 12:24 AM
So don't worry that you see no change in idle or ignition timing at idle RPMs when unplugging the sensor. StarQuests don't use the knock sensor to "learn" either - i.e. they don't tweak ignition timing continuously to determine how much advance is possible based on the octane and quality of whatever gas you happen to be using at the moment. Most cars today do this but not StarQuests.
Posted 24 July 2019 - 07:10 AM
The sensor I put in this motor was rough looking but that's all I had at the time,so I refilled it and crossed my fingers.
I'll check the resistance on this one and see if it's in range before I continue looking for a replacement. Again, thanks a million!
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