TVV Sensor Installation Question

[Zane]

Spent the past 2+ weeks replacing the head gasket on my 97 80 and buttoned everything up last night. The last thing I'm needing to do is fill it with coolant. Silly as it may sound after all of that effort I am second guessing how I installed the TVV sensor on the head. So before I fill with coolant i wanted some guidance.

In the steps to install the head (page EM-51/52) it notes that you must use LockTite 242 and install so that the vacuum ports are facing the front of the head and it does not provide any torque value for the sensor.

This morning I was reading through the manual and stumbled upon the TVV section (Page EC-8) and it states that the torque value should be 22 ft-lbs for the sensor.

When i installed the TVV i used LockTite 242 and made sure the vacuum ports faced toward the front of the head. What my concern is, is that i know that the nut is no where near 22 ft lb tight. How have others accomplished this installation? What I don't want is for it to leak.

Best,

Zane

 

[CRUISER CARTEL]

Spent the past 2+ weeks replacing the head gasket on my 97 80 and buttoned everything up last night. The last thing I'm needing to do is fill it with coolant. Silly as it may sound after all of that effort I am second guessing how I installed the TVV sensor on the head. So before I fill with coolant i wanted some guidance.

In the steps to install the head (page EM-51/52) it notes that you must use LockTite 242 and install so that the vacuum ports are facing the front of the head and it does not provide any torque value for the sensor.
View attachment 1023835

This morning I was reading through the manual and stumbled upon the TVV section (Page EC-8) and it states that the torque value should be 22 ft-lbs for the sensor.
View attachment 1023836

When i installed the TVV i used LockTite 242 and made sure the vacuum ports faced toward the front of the head. What my concern is, is that i know that the nut is no where near 22 ft lb tight. How have others accomplished this installation? What I don't want is for it to leak.

Best,

Zane

When I replaced the tvv on my 96 rig, I took a old impact socket, used a cutoff wheel to made a clean slit through the middle for the 2 vacuum ports on the Tvv.,,,,To pass through and proper clearance. I went with a impact socket due to a higher wall strength so it will not crack on torque via wrench. Had a old bet up set laying around, time for some recycling....lol. Looked almost like a O2 sensor socket set.

My Toyota oem. Tvv. sensor came with a pre applied green sealant on the threads already. I installed the tvv to the engine block with my custom made sst tool I made above to torque spec with a torque wrench,,, and done. Been. 2 years and all is good. If the intake plunium is removed for other work, you could also use some crows feet, attached to a torque wrench for correct torque spec. I went with my idea due to my crows millimeter feet set being used by one of my friends,,, hope this helps.

CRUISER CARTEL

 

[MickeyB]

Digging up old threads, I am installing a new TVV on my motor abs cannot get it to screw in all the way. Do I leave part of the threads sticking out or try to screw it in all the way?

 

[Tedward]

leave part of the threads sticking out

 

[MickeyB]

Easy enough Thxs.