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Knock sensor?
Posted: Mon Jul 18, 2011 12:20 am
by burmese434
Going to install a knock sensor and was wondering if I need a special one? Also I know you don't want any knock but is some ok?
Re: Knock sensor?
Posted: Mon Jul 18, 2011 10:57 am
by Spunkster
What ECU are you using?
Re: Knock sensor?
Posted: Mon Jul 18, 2011 11:56 am
by burmese434
it's a p75 with vtec added
Re: Knock sensor?
Posted: Mon Jul 18, 2011 1:24 pm
by Spunkster
That ECU does not support knock control. Installing a knock sensor will do nothing.
Re: Knock sensor?
Posted: Mon Jul 18, 2011 1:40 pm
by burmese434
Man that sucks. I thought it did because if I don't disable it, it will throw a code? So what do I need to do to get one setup in my 96 cx hatch?
Re: Knock sensor?
Posted: Mon Jul 18, 2011 2:42 pm
by Spunkster
You must use an ECU that has the circuitry for knock control (P30, P72 or P61).
Re: Knock sensor?
Posted: Mon Jul 18, 2011 11:19 pm
by Dr.Auto
Spunkster wrote:You must use an ECU that has the circuitry for knock control (P30, P72 or P61).
So P28 does not have circuitry for a knock sensor? If not this answers my question for why i keep setting a knock sensor code for my P28.
Is it possible to solder in the circuitry for knock control much like for the vtec control?
Re: Knock sensor?
Posted: Tue Jul 19, 2011 10:36 am
by Spunkster
There is a list of OBD1 ECUs and what they support at
http://www.hondata.com/ecus.html
No, you cannot add the circuitry needed, you must get a compatible ECU.
Re: Knock sensor?
Posted: Tue Jul 19, 2011 3:46 pm
by lowblow
What is the Knock sensor use for on P72 ecu?
Re: Knock sensor?
Posted: Wed Jul 20, 2011 9:15 am
by Spunkster
detecting knock and retarding the timing
Re: Knock sensor?
Posted: Wed Jul 20, 2011 10:12 am
by lowblow
Best for NA or Turbo?