Help Knocking from ej?

Cam · Post by **Cam** » Mon May 19, 2008 5:44 pm

Have a error code on the brumby (ej20) 2-2 which is knock sensor... only there after i washed the engine bay, so what i need to know is what the normal operating voltages of the knock sensor are... i've got around 0.025V ac at idle... this too high? no continuity across the sensor either... does water effect them? And there's no audible knocking coming from the engine...

seagull · Post by **seagull** » Mon May 19, 2008 6:17 pm

busted engine mounts / gear box mounts ? have a look
or cradle x member lose

Matatak · Post by **Matatak** » Mon May 19, 2008 6:54 pm

ive seen a few different EJ engines sometimes throw the Knock sensor code for no reason after doing something to the engine, ie. washing or some kinda work without touching it.

then usually go away after awhile, if nothing is actually wrong

water shouldnt affect them either.

Cam · Post by **Cam** » Mon May 19, 2008 7:10 pm

It's really slow now tho as the timings backed off, i might visit a mechanic for the first time ever this week just to see what they say...

Point · Post by **Point** » Mon May 19, 2008 7:17 pm

i'd be making sure that no water has got into the wiring or connections

AlpineRaven · Post by **AlpineRaven** » Mon May 19, 2008 7:37 pm

Give it a squirt with WD40
Cheers
AP

Suby Wan Kenobi · Post by **Suby Wan Kenobi** » Mon May 19, 2008 8:52 pm

Take the sensor off and clean under it, there may be a build up of oxide under it causing a defective reading.

AndrewT · Post by **AndrewT** » Tue May 20, 2008 11:15 am

With a knock sensor code being spit it's probably gone into limp mode.
If water caused the problem then yeh, prolly spray with WD40. Reset the ECU to clear limp mode.

edit - btw see you tonight mate!

ol kid · Post by **ol kid** » Tue May 20, 2008 2:40 pm

G'day, you probley know this but using a hair dryer helps for clean, Drying things Cheers Ethan