I have an 87 z28 305 4bbl. What is the sensor on the driver side thats in the block under the manifolds? Is that one of the temp sensors? And if it's bad is that what would throw the "low temp indicated" code and make the car idle higher? I know the CTS will make the car run rich if it thinks the engine is cold. The people at napa keep trying to give me an o2 sensor, they seem to be all confused about what the code means and the sensor that may be bad.

 

My coolant temp switch is on the passenger side (305TBI) and the O2 sensor is on the drivers side....I know different engine but>> When I wasn't certain at first, I just ganked it out and brought it in..... FYI >>> If it is your coolant sensor don't have your head directly under it when you pull out like I did

 

On the driverside of the head between cyl 1 and 3. 1 green wire going to it.

If that is the one you are reffering to it is a temp sensor and it is for the gauge only.

 

yep thats for the guage. and the cts for the ecm is in the intake manifold.

 

The one thats in the intake man. is that the one on the thermo housing and the one that would throw that code?

 

yeah, and on the thermo housing? idk if its ON the thermo housing (mine aint) but yeah thats the one

 

yea I have a sensor directly on top of the housing.

 

alrighty lol. swap it out

 

anyone know the right part number for it. I took it out and brought it to the store but nobody seems to know how to match it up.

 

Should be this one.

http://www.autozone.com/autozone/cat...xt=temp+switch

 

Thanks. Looks like it, don't know why they can't match it. dummies.