Skoges1

Hey guys, first time posting on here. Really think this is a well managed site and has been a great help to me. Need help with a seemingly stripped knock sensor. I am in the process of trying to remove it to complete changing the water pump. It is on an lt1. When starting to remove the sensor I did not have to apply much pressure, the sensor spun but I can feel it skipping thread. I tried to use a plier while pulling and turning and this is not working. Would really appreciate any advice on removal. Thanks in advance for any idea's.

Badazz 97 TA

iTrader: (18)

what does the knock sensor have to do with the waterpump removal? what sensor?

Skoges1

I am draining and flushing the block as well as changing the pump. The sensor is on the bottom passenger side of the block in front of the starter (single wire connection). I thought this also acted as a drain plug for the coolant on the pass side of the block.

shbox

You are correct. I guess some people are unaware.

It is not uncommon for the outer shell to "strip" when the sensor is stubborn to get off. You basically have to use whatever means (large vicegrips perhaps) to get it off, though you might need to buy a new sensor when you get through.

Barney Z

never replaced waterpump on mine yet, but, from what I hear, might as well replace opti too. . . .

and by the way. . . . Welcome

Skoges1

Thanx for the welcome. Now do you know if a new sensor will fix this when I destroy this pulling it out?

RamAir95TA

iTrader: (2)

You will likely need a new sensor like shoe suggested, depending on how it looks when you pull it out.

wrd1972

iTrader: (12)

Big slip joint pliers or vice grips. Just have to wrangle it off there. It will then be destroyed so a new one is in order.

NeXuS

I had the Same Issue... Had to use Some Vice Grips and it Fubard up the old Knock.. Since you buying a new one anyways You could get an Lt4 knock sensor if you would like.

RamAir95TA

iTrader: (2)

No such thing as an LT4 knock sensor.

There is an LT4 knock module though.

Badazz 97 TA

iTrader: (18)

Well if he would of said that in the first post(in red) then i wouldnt have asked. He only stated waterpump removal in the first post. I thought maybe he was talking about the sensor in the waterpump. I know what the knock sensor is.......

the_merv

iTrader: (88)

Ya get a good size Monkey Wrench on it and you will get it too. Every one of them I've ever taken off broke..lol

Excuses excuses..
You didn't know so don't fight it..we will rag on you even worse..

Skoges1

Alright guys, I got it off with some channel locks. Did not realize the sensor was slipping in the housing. I removed the starter that made some workable room. Did destroy the sensor bought a new one at autozone 12.99 2 year warranty. So I got the pump off and it seems like there is too much play in the pump drive shaft. Is there supposed to be movement or do I have to replace the bearing? Thanx again for the direct reply's

Chad

the_merv

iTrader: (88)

How much movement is there?

Skoges1

It is not sloppy but moves very little.

the_merv

iTrader: (88)

That's fine..as long as it doesn't go in and out you are good.

Skoges1

ya just a little up and down side to side but not in and out. Thank you for the quick response. Do you know of a quality opti replacement?

the_merv

iTrader: (88)

Yes sir..they are called LS1 Coils..lol

J/p..for the Opti I would go OEM..not necessarily from the Dealership..but an OEM one.

Badazz 97 TA

iTrader: (18)

**** you

No where in the first post did he say anything about flushing the block. Thats why i asked what it had to do with the waterpump removal. Again, if he said he was flushing the block it would of made sense. Just replying to what he wrote and asked. No excuses here....

Skoges1

O.K. Thanx for all the input very grateful. I searched the forum, lots of info on the coil upgrade I like the idea. Just gonna use what I have and replace when it craps out. Thanx again guys.

Chad