Team420

if im getting a code 52(knock sensor) can i still accurately set my timing to spec?

DCYota

You can set it to spec, but it's likely to get thrown off as you run the engine due to the knock sensor retarding timing as you run. Knock retard is what will kill power in your engine, so you're likely to experience some real driveablilty issues.

Of course, if the knock sensor isn't working at all...then you may not have a problem...but you can damage your engine if you get serious detonation that the knock sensor would normally retard timing on...after all, that's what it's there for.

dcg9381

Setting the jumpers should remove all electronic advance from the distributor.
Are you getting that code at idle?

DCYota

I should clarify a comment I made as well:

If your knock sensor isn't working...you WILL have a problem...what I meant was you won't have a problem setting the base timing to spec....but it's guaranteed that your timing will be off as soon as you start to drive the truck...plus, you'll waste a crap load of fuel, and possibly damage some other expensive components.

Team420

no..i dont get the code at idle... only when accelerate.. sometimes it waits until fully warmed before mil comes on.. i have been driving it this way for a few k now... it is still the only code i get... what else should i check when i replace it?

lexushead

I assume you have a 3VZE engine..If this is the case you need to replace the small knock sensor wire under the intake..Did you have a recent head job done??..Usually this code appears when that harness is disturbed..Its a millivolt circuit so the slightest resistence will trigger the code..
Good Luck

lexushead

Toyota/Lexus/Scion Certified Master Tech
ASE L1 Master

Team420

yes 3vze motor, no recent hg job.. but i know the wires r bad... cant fix till some snow melts as it is the only vehicle i own that will make it to the main road, and my garage is plowed in, just looking for some tips to get me through till i can fix it