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SN95 Cobras
Coyote Swap bugs....Seeking help from other swaps
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<blockquote data-quote="mwolson" data-source="post: 14931087" data-attributes="member: 16006"><p>The stock oil pressure sensor is a 6 PSI switch that grounds the signal when >6 PSI is present. Check the sensor signal to chassis ground with the engine off and then running. It should read infinite resistance when off and close to 0 ohms whn the engine is running.</p><p></p><p>With the key on, and the sensor wire unhooked, the gauge should read below the low mark. If you ground the sensor wire, the gauge should read in the normal range. If not, check the wiring to the cluster and/or the gauge itself.</p><p></p><p>The temperature sensor should read between about 10 ohms and a few hundred ohms depending on the temperature of the sensor. Check across the sensor pin and chassis ground if you have the older 1 pin sensor or across the pins if you have the newer, 2 pin sensor. The temp sensor signal wire is the Red/White wire.</p><p></p><p>Set a pot to 10 ohms and put it across the signal wire and chassis ground. Turn the key to on, and the temp gauge should point at the H mark. Increase the resistance with the pot and the needle should move down in temperature. If not, check the wiring to the cluster and/or the gauge.</p><p></p><p>The tachometer expects one square wave pulse for each spark plug fire. Where are you getting your tach signal from?</p></blockquote><p></p>
[QUOTE="mwolson, post: 14931087, member: 16006"] The stock oil pressure sensor is a 6 PSI switch that grounds the signal when >6 PSI is present. Check the sensor signal to chassis ground with the engine off and then running. It should read infinite resistance when off and close to 0 ohms whn the engine is running. With the key on, and the sensor wire unhooked, the gauge should read below the low mark. If you ground the sensor wire, the gauge should read in the normal range. If not, check the wiring to the cluster and/or the gauge itself. The temperature sensor should read between about 10 ohms and a few hundred ohms depending on the temperature of the sensor. Check across the sensor pin and chassis ground if you have the older 1 pin sensor or across the pins if you have the newer, 2 pin sensor. The temp sensor signal wire is the Red/White wire. Set a pot to 10 ohms and put it across the signal wire and chassis ground. Turn the key to on, and the temp gauge should point at the H mark. Increase the resistance with the pot and the needle should move down in temperature. If not, check the wiring to the cluster and/or the gauge. The tachometer expects one square wave pulse for each spark plug fire. Where are you getting your tach signal from? [/QUOTE]
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Coyote Swap bugs....Seeking help from other swaps
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