Unplugging the knock sensor

[Guest]

if I unplug it will I get any codes?

[Timmah]

I'd say so. Why would you want to unplug it though?

[Guest]

since they crack with age and since I have the manifold off at the moment I can get to it

[subieboy]

 4U2Envy said:

since they crack with age and since I have the manifold off at the moment I can get to it

Replace with a new one... They are like $50 (??) or something like that

[RA_Jay]

mite be wrong but i think its code 22. i know if the knock sensors stuffed, you get a code. would imagine you would get a code if you unplug it though. agree with subieboy, better just to replace it. codes are a pain in the ass, especially if your car starts going into limp mode

[Guest]

does the knock sensor failing cause the car to go into limp mode?

[Timmah]

 4U2Envy said:

does the knock sensor failing cause the car to go into limp mode?

If it's failing, it might send the wrong signal's to the ECU, tricking it to think there is det when there isn't, so timings are pulled to compensate and eliminate the det and then limp mode.

[Stoffa]

ive got a good V5 one pm me if your keen $40

[Guest]

wrxonp doesn't use his so would that mean he has changed something in his ecu so it wouldn't throw any codes when it got taken out?

[Timmah]

 4U2Envy said:

wrxonp doesn't use his so would that mean he has changed something in his ecu so it wouldn't throw any codes when it got taken out?

He doesn't have a Subaru, unless he was talking about his last Subaru then you'd have to ask him.

Maybe he added a resistor to trick the ECU into thinking the knock sensor was there. But why would you want to do this, I don't know.

[Joker]

Bahahaha

its there 4a reason on oem ecu

[RSB]

just buy a new one. they're cheap as even from the stealer. Seeing as you have the manifold off, it's the perfect time to do it, better that than unplug it, put the mani back on, and then find yourself in code 22 hell.

[WRXONP]

Wow I feel famous

I've allways used knock sensors on my Subarus - I'm all against the whole relocation mod as well -

I did how ever run no knock sensor on my 180sx sr20det - after replacing sensors - replacing wiring and resetting ecu I could not get it to stay off knock maps - so I used a 1 k ohm resistor so the ecu thought the knock sensor was there and that it was not detecting knock

Its all fine and dandy and is safe as long as its definitely not getting det - but the minute something happens - be it bad fuel or advanced timing - its just gonba knock it self to pieces

Btw I only did it as a last resort as after months of trying to fix the problem it was the only way I could get it working and stay sane

In saying that however - early links do not run a separate map for it to switch to when the knock sensor sees a specific value

And with newer links it's purely upto the Tuner if he even uses the knock sensor - some tuners do and some don't

But to stay safe and save your motor it's easier to jut replace knock sensor

[Timmah]

 WRXONP said:

Wow I feel famous

I've allways used knock sensors on my Subarus - I'm all against the whole relocation mod as well -

I did how ever run no knock sensor on my 180sx sr20det - after replacing sensors - replacing wiring and resetting ecu I could not get it to stay off knock maps - so I used a 1 k ohm resistor so the ecu thought the knock sensor was there and that it was not detecting knock

Its all fine and dandy and is safe as long as its definitely not getting det - but the minute something happens - be it bad fuel or advanced timing - its just gonba knock it self to pieces

Btw I only did it as a last resort as after months of trying to fix the problem it was the only way I could get it working and stay sane

In saying that however - early links do not run a separate map for it to switch to when the knock sensor sees a specific value

And with newer links it's purely upto the Tuner if he even uses the knock sensor - some tuners do and some don't

But to stay safe and save your motor it's easier to jut replace knock sensor

/End thread

[Guest]

well thanks for clearing that up guys

[Joker]

/defines dolphinism (yea I know a bad word and offends some ppl greatly)

 

"Forums are a drift net for stupid ideas. Sure, you'll get one or two people who actually give a sane suggestion, but t...hen you'll hit all the dolphins - the people who, because they've been asked to contribute feel that they have to contribute - like it's an intelligence test or something. Only they've got nothing useful to contribute, so they start off on some unrelevant tangent"

- Mattyc, Clubsub forums