Thermostat housing question

[Rockstar]

What are these two plugs on the housing and do i need them? I was thinking of doing a chrome housing.

 

[85 Cutlass Brougham]

If you are running the computer then, yes. You need them. One is the coolant temp sensor and the other is probably a thermal vacuum switch.

 

[megaladon6]

If you are running the computer then, yes. You need them. One is the coolant temp sensor

if both are electrical it's the coolant sensor(this is probably on the side of the block but not always) and sender for the gauge.

 

[Rockstar]

one is electrical and one has two vacum lines with a screw blocking one of the vacum lines. My temp sensor for the gauge is on the side of the block.

 

[bigdan]

by looking at those valve covers , is your engine a vortec ?

if so , you have to keep the coolant sensor because it sends signal to the pcm

 

[85 Cutlass Brougham]

one is electrical and one has two vacum lines with a screw blocking one of the vacum lines. My temp sensor for the gauge is on the side of the block.

It's not for the gauge, it's for the computer.

 

[Rockstar]

Its deffinetly not Vortec its an 88 Monte. Ill take a better pic tomorrow.