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SN95 Cobras
97 Cobra overheating!
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<blockquote data-quote="SNAKEYE" data-source="post: 14034591" data-attributes="member: 22534"><p>FYI, here's a curve and chart out of the 1997 Mustang service manual showing the relationship of coolant temperature to ECT resistance.</p><p><img src="http://i61.tinypic.com/2uzqszo.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>If you have an ohmmeter you can unplug the ECT and measure its resistance to see if it agrees with the ambient air temperature, which would approximate that of an engine left to cool overnight.</p><p>An "open" ECT would have infinite resistance indicating a temperature off the bottom of the scale. </p><p>A "shorted" ECT would have zero resistance indicating a temperature off the top of the scale.</p><p>A shorted or open ECT wire circuit would have the sane effect, so test the circuit for an open or short.</p></blockquote><p></p>
[QUOTE="SNAKEYE, post: 14034591, member: 22534"] FYI, here's a curve and chart out of the 1997 Mustang service manual showing the relationship of coolant temperature to ECT resistance. [IMG]http://i61.tinypic.com/2uzqszo.jpg[/IMG] If you have an ohmmeter you can unplug the ECT and measure its resistance to see if it agrees with the ambient air temperature, which would approximate that of an engine left to cool overnight. An "open" ECT would have infinite resistance indicating a temperature off the bottom of the scale. A "shorted" ECT would have zero resistance indicating a temperature off the top of the scale. A shorted or open ECT wire circuit would have the sane effect, so test the circuit for an open or short. [/QUOTE]
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97 Cobra overheating!
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