Ive replaced fan motor in 03 mustang. Fan will xome on with ac running but car isnt showing on guages its hot what now

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Asked by Jun 29, 2013 at 12:08 PM about the 2003 Ford Mustang Convertible

Question type: Maintenance & Repair

10 Answers

replace the sensor~

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Due to the high pressures and high temps created by the Air conditioning System, the fan will come on whenever the AC is turned on - otherwise it will build pressure above the safe threshold and pop-off the safety valve. The electric fan won't come on until it's needed. Your temp indicator should read 1/2 to 2/3 toward hot when it finally does come on. Most cars do not need a fan while driving at speeds above 30 MPH because of the velocity of the air coming through the radiator. A simple test: Watching the temp indicator, run the engine at 2500rpm for about 5 minutes - the fan should come on, cool the motor and turn back off.

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Where is the sensor

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okay...a cartoon...then a picture...first the cartoon~

Best Answer Mark helpful

picture~

Hoping this sensor replacement "brings it on home"....thanks a bunch for your acknowledgement and support....hope it's a goodie~

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Thia is 3.8 and the dagram you sent is for?

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I am not finding the sensor according to the diagram shown.

1 of 1 people found this helpful.

use your head...find the connector to the one pipe sticking out near the intake manifold...there can only be so many wires leading to this dingus~ take a photo of your engine, will mark it up with circles and arrows...this won't get away from us now~ You are a computer....you need to know how hot the motor is....have to gather that info....it's probably right in front of you covered up with some or other silly hose~....follow the wire(s)~

in that photo there looked to be TWO thermal goodies....find the one that looks like the replacement you've got on hand....you can find this one.~

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