Honda Car Forum

sup guyz see if u guyz can help me out here i have an integra but the fan doesnt turn on reason i know that cuz when i leave the car on it starts to throw out steam from the overfoal so i think my cars over heating but when i pop the hood the fans werent on but when i turn on the A/C both of the fans turn on my friend said its the thermostat but i want to see what u guyz think ?

Your fans are controled by a thermostatic sensor that measures the temperature of your coolant. If the fans come on like you say , when you turn on the A/C, then the fans are good, but the sensor is bad, or the wiring to the sensor is bad.When working properly, usually only one fan will operate when the engin is warm, the second comes on with the A/C for added cooling under the load.If it's been awhile, changing your engine thermostat is an inexpensive piece of preventive maintenence, well worth the hassle, but it's not why your fan isn't operating.

Your problem is probably the switch unit( sending unit ) that turns the fan on. The reason the fans come on with the A/C is that it is wired to do so to compensate for the loading to the engine with the A/C on. You want to replace your thermostat ANYTIME your engine overheats to the point of throwing out steam. Repeated overheating of a engine can destroy it. If you have to drive it, only do so with the A/C on to ensure cooling.

I never knew the word guys was spelled with 'z', the word 'I' was spelled with a lower case letter and the word 'you' was represented by a simple yet incorrect spelling 'u'.From what I gather the fans are electric like most cars. This means there are only a few possible problems.It could the be the motors on the fans, however you said fans turn on when the A/C is on this eliminates the bad motor theory. The second problem could be wiring, however the motors come on with the A/C so this lowers the chance of bad wiring. Eliminating the above two problems leaves only two other possibilities, the thermostat or the computer. The computer is a possibility but unlikely if there are no other signs of computer failure. This leaves the thermostat.Personally I would replace the thermostat as they seem to be a problem device on may cars I have seen in my shop and they are cheap compared to other repairs. You could try cleaning the electrical contacts on the th thermostat but I feel this would not help much.Hope this helps

check your fan switch out... with both of them turning on with the a/c id aslo sugest you checkout your wiringfor more help check out team-integra.net people on there really love love integra's and can help you out