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1998 Ford Escort

This report details the ECT (Engine Coolant Temperature) sensor readings and their implications on a 1998 Ford Escort. Key observations include voltage and temperature measurements with the ECT sensor connected and disconnected. During KOEO (Key On Engine Off), the voltage was measured at 4.75V, corresponding to a temperature of 61°F. In KOER (Key On Engine Running) conditions at operating temperature, the cooling fan activated promptly when the ECT sensor was disconnected, reflecting readings that reached 219°F. This analysis is crucial for diagnosing cooling system issues.

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1998 Ford Escort

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  1. 1998 Ford Escort M&B TM

  2. Ford ECT ECT

  3. ECT

  4. KOEO ECT Disconnected ECT Voltage= 4.75V ECT Temperature= 61F

  5. KOEO Jumper Across ECT ECT Voltage= .01V ECT Temperature= 61F

  6. KOER At Operating Temperature ECT Voltage= .66V ECT Temperature= 192F

  7. KOER At Operating Temperature ECT Disconnected- car still running ECT Voltage= 4.75V ECT Temperature= 199F and climbing Cooling Fan On as soon as ECT was Disconnected

  8. KOER At Operating Temperature Jumper Across ECT- car still running ECT Voltage= .01V ECT Temperature= 210 and climbing Cooling Fan on as soon as ECT was Jumped

  9. KOEO at Operating Temperature ECT Disconnected until Max Temperature was achieved ECT Temperature stopped at 219F

  10. KOER at Operating Temperature ECT Plugged Back In Cooling Fan Switched Off ECT Voltage= .73V ECT Temperature= 183F

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