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Old 06-14-2005, 06:28 PM   #21
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Here'* a wild guess/question -how often do the Knock sensors go bad and do you guys think that is his problem? Probably not, but just another possibility to consider on the table.
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Old 06-14-2005, 08:31 PM   #22
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I'm pretty sure if you disconnect the knock sensor, the PCM will just thing everything is fine [that'* the case on my car]. Maybe you could disconnect your'*, and see if that helps? Or tap on it with a screwdriver and watch your KR. It should jump up quite a bit.. if not, it could be giving false readings.


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Old 06-14-2005, 09:29 PM   #23
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Quote:
Originally Posted by opensourceguy
I'm pretty sure if you disconnect the knock sensor, the PCM will just thing everything is fine [that'* the case on my car]. Maybe you could disconnect your'*, and see if that helps? Or tap on it with a screwdriver and watch your KR. It should jump up quite a bit.. if not, it could be giving false readings.


-justin
When i messed with my knock sensor circuit it gave me a constant 5 degrees of kr and a knock sensor circuit problem code.
So if you disconnect it, which you really shouldn't do incase your actually getting knock, it will throw a code.
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Old 06-14-2005, 09:32 PM   #24
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Quote:
Originally Posted by opensourceguy
Maybe you could disconnect your'*, and see if that helps?
Maybe, for a bit, unless its real knock....bad idea...
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Old 06-14-2005, 11:09 PM   #25
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Aye, that'* true. I didn't think he had real knock. Don't disconnect the knock sensor, in that case..

If 95nasta is correct, and it gives you 5* of KR, then again that'd be bad too.

Try tapping on the knock sensor, and see what that does on the scantool.

Sorry for my ignorance here, my OBDI computer is worlds different than you guys' OBDII, and I am only making suggestions from my experiences with my OBDI setup.


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Old 06-20-2005, 07:09 PM   #26
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Any recommendations of what I should do with my knock sensors? Either way, getting to the front one will be a pain considering I have that splash shield.

If I disconnected them and checked for knock, wouldn't it show up as 0 KR even if it was fake? Cause what is their to report to the PCM if there is no signal?
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Old 06-20-2005, 07:16 PM   #27
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Quote:
Originally Posted by Allmachtige
Any recommendations of what I should do with my knock sensors? Either way, getting to the front one will be a pain considering I have that splash shield.

If I disconnected them and checked for knock, wouldn't it show up as 0 KR even if it was fake? Cause what is their to report to the PCM if there is no signal?
The knock sensors cannot determine fake or not they simply pick up a certain frequiency of noise. It will tell the PCM it has knock whether its real or 'fake' (noise picked up in the frequency range that is not caused by detonation in the cyilnder or real knock). Disconencting your knock sensors is a very bad idea. It will show 0KR or an SES and will not be able to tell the PCM to account for any real knock there is.
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