What sensor is on the passenger side head with the single post in the center. My buddy broke it off installing headers and now I bought a temp guage sensor but it doesn't fit. Thanks

 

it is the fan switch. It is a coolent temp sensor, that switches the fan on.

(I assume you are talking abotu the sensor between the #6 and #8 cyl.

 

Thanks. That is the sensor I am talking about (between 6 & 8). I appreciate your help. I will go and buy the correct sensor tonight!

 

Toekn is right and it should run you $9 from the parts store.

 

I went to the parts store and looked at the sensor for the fan switch as well as the coolant temp. sensor. They both had the wrong connection on them. The one I need is between the 6 & 8 cylindar on on the passenger head but it only has one pin in the middle. It also has a round plastic connector around the pin. Anyone know what it is?

 

i think the parts store is showing you the wrong part. it is definately the fan switch

 

Yep, it is definitely the fan switch. Looks like this, right:

 

This is correct. You probably broke off the plastic mushroom part exposing the pin. It is unneciessarily fragile and breaks at the slightest touch. The sensor looks different when it is broken.

 

That is the one. I will print the picture and take it with me. I will make sure they give me the right part this time. My car thanks you .

 

The only other sensor in the head is the one for the temp gauge in the cluster. This one will be smaller and have a round brass terminal on the end of it. If they hand you this one instead of the F/S that you want, at least youll know what it is. Also make sure that the F/S you get has 3/8" NPT threads. Some older sensors and what not may have 1/2" NPT threads. Doubt this will effect you but you never know what the guy behind the counnter will hand you.

 

Thanks dimented24x7. I will make note of this before I head to the parts store.

 

Thanks Everybody,

That was it. I am in buisiness now!

 

If that is the fan switch, what is the sensor b/w cyl 1 and 3. I don't have a plug that will go the fan switch but i had a sensor there that also looked broken off.

 

there is the temp gauge sensor/plus in that area...if your temp gauge does not move up when the engine warms then you'll know its that...but I think that's what it is, on my car, thats where the temp gauge plug is located

 

Coolant temp. sending unit, Crusin' 1980's already described what it does.

 

So that is not the same as the fan switch? I can't find the plug in my wiring harness that goes to a fan switch between 6 and 8.

 

Could be broken, my connector also broke when I pulled my motor, I think something smashed it against the header. Look around that area or under the manifolds for a loose wire, probably it.

 

Yeah I will look and see if there is a wire. I am sure that it is there just need to look harder. LOL!!