Knock sensor question

[89 MJ]

My 96 Block that is going in my 89 does not have threads for the knock sensor. Is the knock sensor truly needed, or can the computer be tricked and not needed?

[Strokermjcomanche]

Yep , knock sensor 

[89 MJ]

1 minute ago, Strokermjcomanche said:

Yep , knock sensor 

Sweet. Thanks. 

[omega_rugal]

broken knock sensor

[89 MJ]

9 hours ago, omega_rugal said:

broken knock sensor

Very broken. LOL

[JMO413]

Agreed broken knock sensor. Mine looked just like that.

[89 MJ]

3 hours ago, JMO413 said:

Agreed broken knock sensor. Mine looked just like that.

Thanks!

[SVPete]

My read of the renix fuel injection manual would lead me to believe that you could leave it disconnected.

 

If a knock generates an electrical signal which would then cause the ECU to retard timing for 15-ish seconds, then return it to normal....

 

If it's not connected, then it can't send a signal to retard the timing...right?

 

Maybe some smarter guys will confirm or shoot me down.

[Ωhm]

11 minutes ago, SVPete said:

If it's not connected, then it can't send a signal to retard the timing...right?

 

True

[89 MJ]

25 minutes ago, SVPete said:

My read of the renix fuel injection manual would lead me to believe that you could leave it disconnected.

 

If a knock generates an electrical signal which would then cause the ECU to retard timing for 15-ish seconds, then return it to normal....

 

If it's not connected, then it can't send a signal to retard the timing...right?

 

Maybe some smarter guys will confirm or shoot me down.

This is what we were thinking. 

 

13 minutes ago, Ωhm said:

 

True

So it would be fine disconnected?

[Ωhm]

2 minutes ago, 89 MJ said:

So it would be fine disconnected?

 

Well that's your call. It kinda does a good thing, especially if only one or two of the cylinders are knocking.

[89 MJ]

47 minutes ago, Ωhm said:

 

Well that's your call. It kinda does a good thing, especially if only one or two of the cylinders are knocking.

I think I’ll probably do it. Thanks!

[eaglescout526]

Theres three Mopar knock sensors left.

[omega_rugal]

2 hours ago, SVPete said:

If a knock generates an electrical signal which would then cause the ECU to retard timing for 15-ish seconds, then return it to normal....

 

If it's not connected, then it can't send a signal to retard the timing...right?

 

tap and screw the sensor. the renix system needs it to prevent the knock, knock is bad for the engine in the long term you know, also your fuel economy will suffer as the knock sensor is used to fine tune the timing

[89 MJ]

8 hours ago, omega_rugal said:

 

tap and screw the sensor. the renix system needs it to prevent the knock, knock is bad for the engine in the long term you know, also your fuel economy will suffer as the knock sensor is used to fine tune the timing

Thank you. 

[89 MJ]

11 hours ago, eaglescout526 said:

Theres three Mopar knock sensors left.

What do one of those go for? I see the "good" aftermarket ones a $50 and would love a MOPAR one if the prices are semi-close.

[eaglescout526]

Roughly about $70

[89 MJ]

5 minutes ago, eaglescout526 said:

Roughly about $70

That's pretty good. Let me run it past my dad and see what he says.

[89 MJ]

On 11/30/2020 at 10:03 AM, eaglescout526 said:

Roughly about $70

Thank you, but my mom just ended up ordering my parts before I was able to talk to be dad about it. 

[eaglescout526]

38 minutes ago, 89 MJ said:

Thank you, but my mom just ended up ordering my parts before I was able to talk to be dad about it. 

No problem.