hi iam new to this and i was told from a friend that this forum is pretty good for the car i have i have a 84 z28 that i just brought yesterday and it need some work the 1st thing is i CANT FIND THE COOLANT TEMP SWITCH/SENDER cause my gauge do not work to tell me the engine temp i try lookin on the left side for it between clyinder 6 and 8 but idk the second is thing is i have to senser like thing on my thermostat cover (what cover the thermostat) there are two sensor things that are there could one of them be the switch? if not what are they thanks!

 

Welcome to TGO. Lots of good info here to help with our cars. I'm going to move your thread to the general tech board.

GM put the fan switch in the right hand cylinder head between 6 & 8. So if nothing there then no fan switch.

The gauge sensor/switch is in the left hand head between 1 & 2. Should have a single green wire to it.

RBob.

 

ok thanks but the switch i brought has a two pin and the 1 thats in my car is a 1 pin for the coolant SENSOR and for the COOLANT SWITCH it is between 1 and 2 correct and i looking for a green wire?

 

It's actually between spark plugs #1 & #3. #1 is the front driver's side, #2 is the front pass side. We'll excuse the typo THIS TIME, though.

Yes your temperature gauge sending unit gets only one wire, and that one is dark green. It comes from the loom beside the driver's side of the carb between the carb and the valve cover.

In the intake, one thing is the coolant temp sensor for the computer (2 wires, a black & a yellow), and the other is the EFE vacuum switch (it's entirely a vacuum thing, not electrical).

You don't have a "coolant switch".

 

ok nvm i found the sender u was right it was the green wire iam so happy now what about the coolant sensor that tell the computer when its hot NOT the gauge its looks like its on the theomstat housing but it is a 1 pin the one i brought is 2 pin would it matter if i splice it?? or do i have to have the 1 pin?? thanks

 

ok so ones a vacuum and the other is the sensor so y is it in the housing?? and can any1 gave me a pic of it mines look broken

 

This is the Coolant Temperature Sensor that is located in or close to the thermostat housing:

http://www.autozone.com/autozone/par...er=248732_0_0_

Should have a yellow and a black wire to it. This tells the computer what the coolant temp is.

 

ok i got it the hook it up black and yellow wire i hook up and everything seems right now the sensor was in the housing but thier was something else thier next to it could it b the vacuum switch?? it broken cant tell what it is

 

Can you get us a pic?

 

yes i can how do i upload it here?

 

Yea, having it in the middle of the block would make it hard to get to. Gotta' do better at proof reading.

RBob.