DF'sCamaro

I have a 1992 RS Camaro and My Fan works but will only turn on when you run the a/c. Which rite now my a/c compressor is out so my a/c is not working. But other wise if your sitting at with the car on like in bad traffic the car fan will never come on. It will just keep rising. Since it comes one with the a/c I'm pretty sure my fan switch is working. So we replaced the temp. sensor and it still does nothing. So there only one more thing does anyone know if the factory temperature guage would have to be used? Because mine quite working so I just got a aftermarket one and it seems like I have been having fan problem since. I just did not notice till now because it just now getting hot weather around here. If anyone would have a good solution that would get my fan to come on again! [COLOR=blue]

Benm109

It is the fan switch, or the wiring to it. It's located on the passenger side cylinder head, in between the #6 and #8 spark plugs. You'll probably have to jack up the car to get to it. To test the wiring, just remove the electrical connector from the fan switch, turn the car on, and ground that wire. If the fan comes on, than the wiring is good, if the fan does not come on, than there is a problem in the wiring.
The temp. gauge in the dash uses the coolant temp. sending unit that is located in the driver's side cylinder head in between the #1 and #3 spark plugs. The factory temp. gauge does not have to be hooked up at all. Just for clarification, the ECM uses the coolant temp. sensor on the intake manifold next to the thermostat housing.

DF'sCamaro

Thanks for the advice I am waiting on a buddy of mine who gets the fan switches that come on sooner like at 200 degrees.

Green92RS305

check the sticky post up above about cooling fans and i made a post about the switches in our cars. should fix your problem

jconrad

fan switch options

eagle_eyes

iTrader: (3)

so if i were to get a new switch for my '88 2.8 and thermostat, will the corvette setup work?

jconrad

I imagine that it would be the same, but I honestly have never owned a 2.8 to confirm that they are the same setup or not. As long as your thermal fan switch (sensor) is a one wire setup, I believe it should work.

eagle_eyes

iTrader: (3)

i would check it, but it's storming right now...i'll let you know

Dizturbed One

If you have a 92 RS I'm assuming you have the 3.1 (as I do)

Our cars differ slightly from the rest, we do not have several different sensors for our coolant and fan switch. They are all controlled through the computer from a sensor on the front of the intake manifold and the part only costs about 8 bucks.

HOWEVER

I recently had the same problem. I changed the sensor and it did nothing, I was still getting to 240 and then I would get scared and shut my motor off or find a nice spot to coast in neutral for a minute then rev up to get cooler water into the jackets.

When I jump the diagnostic terminal my fan comes on just fine.

So I let it overheat one day...

It got all the way to 260 (DEEP in the red, totally pinned) and right when I was about to wig out and turn it off... My fan came on.

The temp dropped down to about 220 within about 25 seconds, all of this at idle.

My car did not smell hot, it did not feel sluggish, it did not have anything spilling into the overflow tank unless I popped the pressure relief on the radiator cap, and even then it was in no rush to get out of there.

All of this coupled with the fact that 220 seemed a bit high of a temperature for the fan to be shutting off at led me to one conclusion...

The temperature gauge is a piece of CRAP.

My car gets to 260 every time the weather is 75 degrees or more and I'm driving in heavy traffic, then the fan always comes on at the same spot, and turns off at the same spot. It never feels sluggish, and it doesn't steam or smell.

After a little more reading around online I found that these things are kind of known to be garbage in our thirdgens also, so my mind is firmly at ease with the fact that my temperature gauge has no idea what it's talking about.

Food for thought.

(I still worry about it time to time though, summer is coming after all... lol)

rudyt5000

i dont know if an RS has a fan relay but my Z-28 does and it was the cause of my overheating and fans not turning on ...do a search of FAN RELAY and hopefully this will help you. A fan relay only cost like 4 bucks and easy to replace

91RS3RDGEN

I have a 91 RS and was having the same problem.I ended up installing the jet fan switch part #jet-60600 from summit and the fan works fine now.

rudyt5000

let us know if you fixed it ...and how you did it DF's CAMARO

OneGravenKiss

i am having the same problem with my t/a i change the relay and the temperature sensor and the fan motor and the temp sending unit what esle could it be? and how would i go about to determine what it is? thanks

jconrad

OneGraven, is your t/a single or dual fan? Have you tried taking the connector off the fan switch, and grounding it to see if the fan is coming on? Tried turning a/c on, to make fan come on?
The factory fan switch WILL NOT turn the fan on until over 225º. The crappy gauges in these cars are usually about 20º on the high side, so when the actual temp is 220º, the gauge usually reads 240º, leading you to believe that the car is overheating.
fff

DF'sCamaro

I am in the process of fixing my fan switch right now and cant get the harness/sensor that plug into it off of it. Im doing it in my drive way on ramps so I don't have the best mobility and I am afraid of breaking the plastic harness/sensor. If anyone knows how to get it off the fan switch easyer please tell I am just now getting around to doing it been very busy but it hot down here in Texas and the car needs it now.

jconrad

All I did for mine (all 3 times) was to squeeze the sides of it, hard and pulled slightly out and it popped off.

DF'sCamaro

Yea I got the Fan Switch Installed but while we were installing it we unplugged a wire from my starter(it was in the way of my wrench). After the Fan Switch went in just fine we went to put back on the wire on the starter and fill up my radiator but one of the studs of the starter broke off when we began tightening it back up. It sucks but I got a lifetime warranty on the starter at OReilly's o yea I knew paying for those warranty's would come in handy I'll post how well the performance Fan Switch does tomorrow once we get the air out of the block since i lost most of my antifreeze.

OneGravenKiss

Well i have had the temp all the way to the highest it can go and still no fan and its a single i want dual but anyway i never tried grounded the fan switch where is it excatly so i don;t waste time trying to find the damn this and as far as the a/c no go on that one either. Thanks

DF'sCamaro

The Fan Switch Worked Great Comes on at 200 degress and off at 185 degress. It works on TPI and TBI 5.7 and 5.0 single or dual fans. Here is the link:
http://cgi.ebay.com/ebaymotors/ws/eB...976837761&rd=1
That the most current auction he has for sale on ebay like I said it work great for me on my 1992 5.0 TBI RS

jconrad

That looks suspicoiusly similar to the one posted at this site
here, for like $20 and change (including shipping)

Bill Speed

Hey all,
Recently while replacing my Caddies antenna, I found the plug for that under the pass side dash was unhooked AND the fuse removed. While I need to change my dead antenna in my Firebird now, I found I have no similar harness at the passenger side of the dash that I can locate, so I did resort to pulling the 20Amp fuse in the normal driver side area. After doing some checking, I found this also is used for more then just dash lighting which I didn't really need. Things like the CCC and door locks. Anyway, where is the fan relay for an 89 Formula? I am not sure where to wire in a switch to control my own fan manually. I can't get the sticky link to work as mentioned in that thread...possibly down since the crash still.

Help, ASAP...my car is also leaking coolant and I will need the fans to avoid being stranded again.
Bill