What does this sensor do?

[ACV1081]

I found my 91 to have this sensor unhooked and broken... I was getting no CE light, or unusual driving conditions. What does it do? It's found on the coolant line on the rear head. I think it's feeding the heater core? Just curious as I already swapped in a different one. :wave:

TIA,
Adam

 

[Super Matty P]

CTS maybe? (coolant temp sensor)

p.s. those headlights are great. Where did you get them?

 

[SHOZ123]

That is the Cold Engine Lock Out switch. It keeps the heater fan from coming on until the coolant temps rises above 100F or so.

 

[Sho-Driver]

CTS maybe? (coolant temp sensor)

p.s. those headlights are great. Where did you get them?

That's known at the ECT (Engine Coolant Temperature sensor).

I believe the headlights are from an Impala.

 

[Rockledge]

That's known at the ECT (Engine Coolant Temperature sensor).

Actually, I believe Paul is corrrect. The ECT and the cold engine lockout (CELO) switch do look somewhat similar, but from what I see in the pic, and from Adam's description of its location, I'd have to conclude also that its the CELO switch.

 

[Sho-Driver]

You're right, Paul is correct. I quoted the previous post to denote the context. Please read into it more closely ;-) I was correcting his previous acronym.

 

[ACV1081]

That's known at the ECT (Engine Coolant Temperature sensor).

I believe the headlights are from an Impala.

So, basically the sensor does nothing unless you've got the heater on? I am kind of having sub par performance with my a/c blower as it doesn't come out super strong like my mom's 95 when I put it on max a/c... any clue as to why that is?


Oh and yes the headlights are off an 00' impala.



Thanks all,
Adam

 

[Rockledge]

You're right, Paul is correct. I quoted the previous post to denote the context. Please read into it more closely ;-) I was correcting his previous acronym.

Gotcha.