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SN95 Cobras
97 cobra overheating issues
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<blockquote data-quote="SNAKEYE" data-source="post: 16158250" data-attributes="member: 22534"><p>To those whose radiator fan is not turning on with engine coolant temperature rise:</p><p></p><p>First make sure that your engine coolant is at it proper operating level. A low level of coolant will not properly deliver heat to the Engine Coolant Temperature (ECT) sensor, which will not then be able to tell the control circuits to turn on the fan.</p><p></p><p>Second, because your fans run when the A/C is switched on all of the main fan wiring and connections are in proper operating condition, a <em><u>very</u></em> good thing!</p><p></p><p>Which leads to the Engine Coolant Temperature (ECT) sensor, which could have quit working, or there could be faulty wiring leading to it. The ECT is located at the front of the engine to the right of the alternator. It kinda looks like a small brass sparkplug, and has a two-wire gray connector plugged into it. To test for a faulty sensor, with the ignition switch on and fingers, clothes, and tools out of the operating area of the fan, unplug the connector and short circuit the two connections within with a small gage wire (like a paper clip). This simulates the ECT sensing very hot coolant and being of low electrical resistance. There is no danger of electrical shock or frying any wiring. The fan should come on right away. If not go on to inspecting the wiring to eliminate it as a possible fault.</p><p>The ECT is/was Motorcraft Part No. F5AZ12A648AB and cost me about $29 dealer cost back in the day when I was into modifying 'SNAKEYE'. </p><p></p><p>Good luck guys!</p></blockquote><p></p>
[QUOTE="SNAKEYE, post: 16158250, member: 22534"] To those whose radiator fan is not turning on with engine coolant temperature rise: First make sure that your engine coolant is at it proper operating level. A low level of coolant will not properly deliver heat to the Engine Coolant Temperature (ECT) sensor, which will not then be able to tell the control circuits to turn on the fan. Second, because your fans run when the A/C is switched on all of the main fan wiring and connections are in proper operating condition, a [i][U]very[/U][/i] good thing! Which leads to the Engine Coolant Temperature (ECT) sensor, which could have quit working, or there could be faulty wiring leading to it. The ECT is located at the front of the engine to the right of the alternator. It kinda looks like a small brass sparkplug, and has a two-wire gray connector plugged into it. To test for a faulty sensor, with the ignition switch on and fingers, clothes, and tools out of the operating area of the fan, unplug the connector and short circuit the two connections within with a small gage wire (like a paper clip). This simulates the ECT sensing very hot coolant and being of low electrical resistance. There is no danger of electrical shock or frying any wiring. The fan should come on right away. If not go on to inspecting the wiring to eliminate it as a possible fault. The ECT is/was Motorcraft Part No. F5AZ12A648AB and cost me about $29 dealer cost back in the day when I was into modifying 'SNAKEYE'. Good luck guys! [/QUOTE]
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