Really loose coolant temp sensor

[mrsmart180]

I figured I would change my CTS after I did my timing belt change. I installed it but it wiggles a whole lot. I didn't realize this the other day and I was revving it high and saw tons of coolant pouring out of the cts. Why the heck is it so loose? I used one from idparts so I dont think its a junk one.

 

[Black00Jetta]

Are you missing the gasket or is the old gasket still in there?

 

[Mongler98]

lol
definitely missed installing the o'ring, i did that once! easy to do when the part your replacement for the first time was covered in greasy mess or was missing, in my case, it was really nasty and i pitsuprisinglyched it, also did it in the dark with a headlamp soooo.

 

[mrsmart180]

No i installed the oring

 

[Mongler98]

then its not the correct part or the threads are cracked or stripped
take it off and compare with old one
it should be a hand tight job that compresses the seal.

 

[AndyBees]

The CTS on a 2000 ALH engine doesn't have threads........... It is secured in place by the use of a horseshoe style clip! Using a new O-ring requires a bit of pushing to properly install the Horseshoe Clip....... then, the CTS will not be loose!

 

[jmodge]

The o-ring May have rolled. Purchase a tube of syl-glide, it’s water resistance and good to a few hundred degrees of temp. Makes coolant o-ring jobs much easier and more successful