ok guys this morning i removed my knock sensor because i was going to replace it cuz ive been getting code 43..but once i removed it coolant was leaking threw where the knock sensor screws on too..i have a bad feeling that this is pretty bad. what should i do to fix this is problem i seriously dnt know wat to do??... thanks in advance!!

 

Its normal, dont worry about it.


replace the KS, refill with coolant.

 

hummm... i had replaced it before and not even a drip of coolant came out and it was fine for about a month or so then i started getting code 43 when the car heated up now that i was gonna try to replace it coolant started coming out and now that i turn it on the code is already there...??

 

The knock sensor is screwed into the water jacket. It will leak coolant if not that means you was low on coolant.

 

so then my situation is fine?..its weird cuz i turn on my car and the SES light is already on..maybe theres another problem?

 

If you dont have water coming out of the block when you remove the knock sensor, you have a problem.

Is the SES light coming on when the motor is off, but the key is on? If so, that is how it is suppose to be.

 

the SES light comes on when the motor is on

 

It's very common that no water comes out when you screw out the sensor. It's not a problem, it's simply salts and deposits setting in that lowest part of the water jacket. If you stab the hole w/ a screwdriver the water will come out. In no way does it automatically mean you'e low on coolant. In fact, if the hole is open and no water comes out you're not low on coolant...you're out of coolant. The hole is originally a drain hole, it's the lowest point, removing the plug or sensor will drain all coolant from the block.

 

Yeap. Same thing happened to me.

 

oh ok i see..now my SES light comes on so i need to check wats wrong cuz the knock sensor and connector is still new

 

is it bad stabbing the hole with a screwdriver when there isnt any coolant coming out and then u accidently stab it to hard and the coolant starts to come out? cuz im just saying cuz the SES light wouldnt come on when i would start the car before and now that this happend i pluged back in the Knock sensor in a hurry cuz the coolant was coming out and i plugged back in the connecter and then i turn the car on and the SES light was on....???

 

no its fine, and i suggest draining the coolant, and getting that junk out of there.

 

so im guessing that was all junk clogged up.. quick question..so how does the knock sensor work if theirs coolant passing threw it inwhich where u screw it in to?

 

it senses certain frequencys, coolant has nothing to do with it...GM just got cheap, and instead of casting another hole, they reused the existing block drain holes.

 

oh ok thanks i got freaked out this morning when coolant started coming out like crazy!..im guessing i have an electrical problem or the memcal is crap cuz the SES light doesnt go away anymore

 

you probably have a ground issue, run a tap through the hole and replace your ks pig tail. Solved my problem and I got a coolant bath too. I noticed a small drip from the hole and couldn't leave it alone so lesson learned.