knock sensor

**AB'sLs1** · 06-29-2010, 03:58 PM

So I got my car scanned today and it came up with a knock sensor code... I know this sounds like a I big newbie question but what am I looking for in figuring out if its a knock or if the sensor is just bad? Also where r the knock sensors located on a 98 ls1?... I'm terrible with diagnostics so please go easy on me ha

**Cutlass** · 06-29-2010, 06:36 PM

the knock sensors are under the intake manifold and most likely its a bad sensor

**DaddySS** · 06-29-2010, 06:49 PM

Agreed. Water getting under the intake and deteriorating the sensors is common. You'll want to replace both.

**0rion** · 06-29-2010, 06:53 PM

do you or have you washed the engine down with a garden hose?

**JayTA98** · 06-30-2010, 08:38 AM

I do wash my engine bay about once a month but im very careful on how much water i use. I hopeI wont get issues from water. thats why i also didnt remove the foam strip when i swap my LS6 intake

**AB'sLs1** · 06-30-2010, 10:34 AM

Originally Posted by 0rion

do you or have you washed the engine down with a garden hose?

Haha no I'm scared to get all those electronics wet on top of the engine let alone the ones that are apparently hiding under the intake now that's not to say that the old owner didn't

now should I be concerned about iy being an actual knock or is it most likely the sensor?... the motor is pretty much well untouched from factory and it has 170k on the clock

**blue02Z** · 06-30-2010, 11:44 AM

There is a gm bulletin that says when you replace your sensors you should make a dam of rtv around the holes to keep water out. Your harness is probably all corroded too. You should replace both sensors, the harness, and make dams around them to keep water out

**AB'sLs1** · 06-30-2010, 12:31 PM

Alright thanks everyone

**0rion** · 06-30-2010, 06:42 PM

what was the actual code? Most likely it's a bad sensor.

**AB'sLs1** · 07-01-2010, 06:11 AM

Originally Posted by 0rion

what was the actual code? Most likely it's a bad sensor.

I don't know what the actual code was when I got it taken in for inspection ur ran the code and told me that it was the knock sensor so I didn't get to see the code.... is it just one sensor or two cuz there's 2 in the picture but r they both knock sensors?