Can anyone tell me where the fan sensor switch is. I did search's and cant find anything. The fans come on sometimes and sometimes they dont. When they dont come on the car almost over heats. So Im thinking its the fan sensor switch. Its a 96 Collectors Edition w/LT4. Thanks for any help or info!

 

I believe their are to sensors just behind the battery.

 

Define "almost overheats". The normal operating temp range is probably much higher than you consider acceptable.

I don't know the fan on temps for your year, but you need to know that info before chasing something that isn't there.

 

On the LT4, the fans will not come on until 228 degrees. Of course, you can turn on the A/C and they should come on also.

As CentralCoaster stated, this is probably higher than your used to seeing, especially if your looking at the analog temp gauge. On that gauge 228 is just shy of the "shaded" overheat zone. So, most people look at it and think it's pegged all the way over. But look closely and you'll see it still has a small bit of travel left.

What temp are you seeing on the digital temp gauge? It will go up to 228 and then the fans should come on. This is with the A/C off.

 

All of the above.

Plus, there are no fan switches on a '96. I think 1989 was the last year. Your fans are 100% computer controlled.

RACE ON!!!

 

I agree with the above too. Let us know what temps the coolant is running and see if we can't figure it out.

 

Temp switch is in the water pump.

Fans controlled by the PCM

With A/C off

Low On-219 Off- 207

Hi On-228 Off-214

A/C On

Head Press > 189-Fan Lo
> 255-Fan Hi

 

Why would there be a switch in the water pump if the PCM controls the fans??? I believe that the PCM gets it's engine temperature information from a temperature SENSOR in the water pump, which the PCM uses for many functions. In response to the OP's original question, "There are no fan switches on a '96." See post #5.

RACE ON!!!

 

Please forgive me. I should have said temperature sensor. I will try to do better in the future. Refreshing to see that you are on duty. Did I get the rest of it right?

 

With all due respect, I think the difference between switch and sensor is pretty significant to the OP, since he was probably looking at ripping it out and putting a lower temp one in there.

 

Excuse me again! I will shoot myself at dawn.

 

Sorry for the improper information, CFI-EFI is correct about the fan switches.

 

Somebody has to be on duty to prevent or correct a portion of all the misinformation that constantly flies around here. It may sound like a difference without a distinction, until it is YOU trying to trouble shoot YOUR car.

That should be especially evident to a guy that reads a post written in response to another, about imbalance of the flex plate on an LTx engine, and then, assumes, that since he has a manual trans and a flywheel, that the flex plate imbalance doesn't apply to the same engine with a flywheel. I would expect such a guy to be MOST conscious of accuracy. YOU could have been bitten...Badly. It seems you abused me then, too, for saving your butt.

It's dawn. You gone?

RACE ON!!!

 

The abuse is all in your mind. I think you have some deep rooted fear of being wrong. You seem to have to question people's intelligence or soundness of mind. For some reason, you and I seem to continually clash. I enjoyed the forum more when you left.

I am well aware of the difference between a switch and a sensor. I knew it was a sensor but called it a switch. I made a mistake. I guess it doesn't matter that the rest of the info was accurate. The thread starter called it a "sensor switch."

Glad I made your day.

RAVE ON!!

 

The post you are agreeing with states that the fans do not come on until 228 deg. According to my FSM, the fans come on in Lo mode at 219 degrees with the A/C off. Now who made a mistake?

You may now have the last word. This is my last post on this forum.

 

Once again, a perfect example of how to be wrong and get emotional over it:

And how to just be wrong:

 

Why are you fighting CFI-EFI's battles? He seems to be fully capable of insulting and belittling people on his own.

Lefoy84 made the cardinal sin of calling a sensor a switch. This cooling switch thing is one of CFI-EFI's pet peeves. The rest of Lefoy84's post was spot on. He correctly stated that the PCM controls the fans. Why do so many people defend this guy?

 

I don't so much have a fear of being wrong as I prefer to contribute good, factual and correct advice to those seeking it. I strive not to be wrong, but being human, I am subject to making mistakes. Your criticism of my "fear of being wrong" would lead one to believe that you think that is a fault to try and not to make mistakes, and that one should be eager to make them. If being wrong is what you are striving for, why do you get so upset when they are pointed out? You should be proud of your success in your being wrong so often.



All your other information, that you pride yourself for my putting a on was superfluous. The OP asked where to find the "fan sensor switch", presumably so he could test, verify it's operation, or to change it out for one that would turn the fans on at a lower temperature. YOU sent him off on a wild switch chase. Based on the above, you should be very proud of yourself.



You didn't make MY day. There are plenty of threads that I can contribute to. I don't need to get bogged down correcting wrong information, posted by those that have no "fear of being wrong."

"RAVE ON!!"??? It was you that started to lose it in post #9 after a gentle correction. Your false information came only one post away from where I posted the correct, relevant, information.



Promise? That will help take a load off.

RACE ON!!!

 

What about my post? And the fact that you agreed with an incorrect post. Always being right is a terrible burden.

 

Presumably! Is that like ASSUME!