help with electic cooling fan

[doobiess]

Ok well the car will maintain temp.. no prob when running the constant 55km or 35mph but when i come to a light and sit for over a min.. temp goes up. I discovered the electic fan isnt comming on at all.. even when the temp went way up. I heard that there is a sensor that is used for the rad fan.. and where would i locate it. I hear its on the block somewhere.. but if i could disconnect it.. and run power from the sensor I can see if my fan works. So has anyone had this prob.. and does this sound right.. because i dont wanna buy a new fan and find out its some cheap sensor. Any help is appreciated..

And btw i just bought my car.. yesturday 1994 Grand Am SE 3.1 V6 Auto.

Thx

[rixGAphx]

Congrats on the new purchase!!!

You're correct that the fan is operated a sensor in the block.

The '94's have a computer operating system known as OBDI+ (OnBoard Diagnostics, Ist generation, enhanced).
The temp sensor may be integrated into the computer funcitioning of the entire vehicle, in which case don't screw with it; or,
it may be stand-alone control for the fan relay.
I'm not familiar enough with your model/year to say.

The fan motor may be fine, but the relay may be fried or disconnected.

BUT, unless the gage was into 220*F or more, the fan wouldn't come on anyway!!
220* is the top of the 'safe zone' on the gage.

-Rick

[doobiess]

thx :)

as for the temp i was hitting about 115 celcius which is about 262 degrees so it shouldve came on... but as your say the relay maybe fried... where is that located... assuming that all 3100 v6's are the same?

[pcprophet]

i also been having the same problem. does anyone know where the sensor is located or anyone that has a picture of this sensor, would be greatly appreciated :)

[Matt95GT]

"D"

http://fazeshift.org/pics/albums/userpics/3100PCM/6E3-A-3.jpg

[pcprophet]

thanks alot, had the same book an never saw the page...(Retard) anyway i seem that the sensor is fine and the motor fine but i was reading the the book and was telling me that there is a relay.its says thats it *9 and have 3 relays in the top left, but when i looked there was 4 relays. how do i know which relay is which? does anyone know or im i going crazy :(

[Matt95GT]

4? Hmm... purhaps the DRL option on the Canadian models have a relay for that.

You'll either have to trace wiring, or go by process of elimination. Looks like the wire from the PCM to the fan relays is dark green w/ white stripe. Here...
http://fazeshift.org/pics/thumbnails.php?album=97

[daman]

Originally posted by pcprophet
how do i know which relay is which? does anyone know or im i going crazy :( [/B]

it should be the green one,


what determans fan function is;

coolant at or above 226deg.

coolant fan relay as Matt95GT posted

and the ECM Temp senser,located in the intake under the
throttle body.