knock sensor?
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knock sensor?
So my knock sensor is going out and of course the check engine light is goin on and off when it wants to, i was wondering if it should be fine to drive another few hundred miles till i can fix it....it shouldnt be messing anything else up or have any other problems should it? its coming on more frequently now too....
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You'll be running rich with a faulty knock sensor signal, but shouldn't be a big problem.
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote: ↑Mon Jan 14, 2002 10:23 am Wait....I'm confused now.
I drove from Oregon to Texas with a bad knock sensor... car would rattle on hard pull, onramps, etc... BUT got an average of 32 MPG for the trip.... I also had one injestor that started dying at idle going thru Salt Lake City, ran fine off Idle, so I kept going.
It definately WASN'T pulling timing...
It definately WASN'T pulling timing...
'90 Bermuda Blue L Wagon (Wife's),
Auto, AWD, Now with 275K + miles!
2005 Outback, 2.5 AWD (wife's new daily)
Auto, AWD, Now with 275K + miles!
2005 Outback, 2.5 AWD (wife's new daily)
I can say with 100% certainty (via lots of data logging), that when there is lots of knocking, the ECU WILL reduce the "octane factor" parameter and the "knock retardation" parameter will increase. Once octane factor falls below 25%, extra fuel is added (WOT is about 1 AFR more rich) . Timing map is also reduced when its not at 100% either.
'11 WRX Limited
'94 SS | 3" TBE, 07 TMIC, TD05H-16G, Revtronix Stage 2, Walbro -- Sold
'94 TW | R.I.P.
I can tell you when I was "testing" my knock sensor and trying to make it not as "sensitive" when I was non-turbo, it tweaked out and made the car run like poo. I had no power, and it threw a CEL.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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