spoolage

iTrader: (2)

My mechanic isnt going to be installing the knock sensor on my reman...

Can this be harmful for the engien???

Its it a crucial part for the engine???

Thanks

duboisr

The stock car has one but it does not retard the timming if needed . The after market unit J&S knock sensor does retard timming but you need to have enough split between the leading and trailing timming to be effective

spoolage

iTrader: (2)

so... its not necessary?

rynberg

If you still have the stock ecu, it IS necessary, otherwise you will get a check engine light and it may cause other issues.

Why the hell wouldn't he reinstall the knock sensor? There's no reason not to.

bureau_c

Doesn't the stock ECU do *something* with the signal? I thought it retarded timing, just not enough to do much good. I'm pretty sure I read that it will slightly retard timing if it the sensor is missing. I know it will throw an error code.

jds

weaklink

the stock knock sensor and stock ecu do retard timing. Supposedly not as accurate as the J & S, but I would keep it. The PFC does not retard timing according to the knock sensor.

bureau_c

For what its worth, I was driving for a while on a Pettit ECU that had a problem with the knock sensor input...it thought it was missing, and so gave me the error code. Other than that I didn't notice any problems with it, but I probably wasn't operating at full capacity either, with the timing retarded. That ECU later died completely, however, so I can't do any further testing.

jds