Question about 1999 Honda Civic

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Knock sensor how to change

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  • Honda Master
  • 20,706 Answers

Why do that?
why are you asking.
is the ECU throwing DTCs for knock?
if yes, post the DTC, dont use the words we want the real TDC numbers.
even consider the engine is knocking?
try to think like a PCM
it is always listening to Mr. Knock microphone.
it is always adjusting spark timing to correct it.
what if it could not stop the knock?
(lean fuel mix>?)
a real ASE would see if the knock was real first.

when you use low octane fuel this sensor, allows the the
engine to adjust timing for the faster burning fuel.
it retards timing.
so do post ALL DTCs not just 1 of many.
and do check AFR.
AF/R Air fuel ratios.

all knock sensors
you , remove bolt and it comes off, (just look)
or it unscrews itself like other sensors, like oil pressure or ECT.
the fsm covers this, ever seen one>.?
id recommenced not not working on cars FSM free, sure would.
and for sure noobs.
and if a noob, there are vast dangers , working on cars, and worse.
alldata.com has this too.

if you have to ask how to remove or what it is, or where is it
that is all noob questions. they are ok.
but why not post all symptoms and DTC errors.
first.
then we can talk tests.
and how to gather evidence.

Posted on Feb 17, 2014

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Posted on Jan 02, 2017

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