PDA

View Full Version : Knock sensor bad?


CRF_Rider
04-06-2003, 11:00 PM
How do you tell if a knock sensor is bad? Do they go out alot in the 85-86?

Mark
RedP85
03-19-2005, 11:27 PM
OK, this is about the 12 old thread I read..
Still no answer to the resistance value of the probe.
(Nothing in TSRM either)

Can anyone that has a knock sensor handy measure
the resistance between the pin and the body ?
Please make sure that the DVM probe touches ONLY
the pin, not your skin at the same time

Anything in the EFI Trouble shooting manual ?

I'm having code 52, swapped ECU, checked cable...
..only KS left. !
ma615mgte
03-19-2005, 11:30 PM
did you check the bible? i have an 86 ma61 and 87 ma70 bible handy.. i could try to look that up for ya..
RedP85
03-19-2005, 11:34 PM
If the bible is the TSRM, yes I checked.
No value found in it.
ma615mgte
03-19-2005, 11:37 PM
If the bible is the TSRM, yes I checked.
No value found in it.

well yea duh wayne.. i just relate to it as the bible.. takes a moment to register..

what year did you check?
RedP85
03-19-2005, 11:40 PM
what year did you check?On-line, which is 86. It talks about it, but no value. I guess mine is dead, as it
reads infinite, but I am not sure that this is abnormal for a KS.
ma615mgte
03-19-2005, 11:44 PM
let me check my bibles i have here... ill hit up w/ results when i find something.
ma615mgte
03-20-2005, 02:04 AM
ok,, i looked for a few hours.. and no mention of the knock sensor in my 90 manual.. WTF??
85 rat rod
03-21-2005, 02:22 AM
im told those things work like microphones, so tap it with the ass end of a screwdriver while you test it and see if its resistance values change at all
ma615mgte
03-21-2005, 02:41 AM
im told those things work like microphones, so tap it with the ass end of a screwdriver while you test it and see if its resistance values change at all

that sounds just wierd
RedP85
03-21-2005, 10:15 PM
Not that weild..when you know how a DVM and a microphone works,
it's all make sense. :wink:
85 rat rod
03-22-2005, 06:06 AM
learned about it in shop class
repinS
03-22-2005, 04:11 PM
learned about it in shop class

hehe, ditto. You speak's the truth! :)
Supra_GT_R
03-23-2005, 03:09 AM
no idea, but do you need one? i got one in my motor, but dont need it (mines an 82) you can have it, aslong as you send me something to put in the hole in my block
RedP85
03-23-2005, 08:39 PM
no idea, but do you need one? i got one in my motor, but dont need it (mines an 82) you can have it, aslong as you send me something to put in the hole in my blockYou don't need anything in the hole, as it does not go through the casing. If you really want to put something, It is 12 x 1.25 mm, 10mm long will fit.
(Not that common thread tough)
I could send you my dead one, but that would be benificial to Canada Post only !
The late 84 have the hole, but no KS installed in it.

Yes I do need one, as I am currently running with the CE light ON, and timing locked at 10 BTDC by the ECU.. :(