How To Fix Ford Temp Gauge Engine Temp Sensor Ect ођ Choosing the correct engine coolant temp sensor for your 7.3 powerstroke. oem motorcraft part to fix the temp gauge. This test may be performed with or without the hood open and with the engine warm or cold. check the engine coolant level. fill as needed. with the ignition off, remove the engine coolant temperature (ect) sensor harness connector and attach ect sensor "t" cable as a jumper between the powertrain control module (pcm) (12a650) and the ect sensor.
Repair Guides Engine coolant temperature (ect) sensor problem. i replaced the engine coolant temperature (ect) sensor on 2001 excursion 7.3l powerstroke and the factory temp gauge stays bottomed out at "c". the sensor is new and it seems to work fine at running temperature the new sensor reads 3.66kohms. when engine is cool it reads somewhere around 8.0kohms. Fuel injected engines have 2 temp units ect sensor, 5volt, 2 wire, only used by the engine computer temp sender, 12volt, usually 1 wire, can be 2, only used by dash board temp gauge they look similar but are not at all the same most parts stores will send you away with an ect sensor, lol you often have to spell it for them, s e n d e r, sender. 2364 posts · joined 2013. #2 · mar 19, 2018. the coolant temp sensor is at the top of the water pump. however, it only sends a signal to the dummy gauge on the dash. the reading that you are seeing on your diagnostic tool is an erroneous measurement and means nothing. the pcm controls the engine looking at oil temp only and has no reference. 11286 posts · joined 2009. #4 · mar 16, 2012. the stock coolant gauge will show 'normal' at about 150*f or so. maybe a touch less. so the thermo is probably stuck closed, or the ect sensor is bad but doubtful. if you're in there doing the thermo, i'd do a good flush and swap over to elc with a cat ec 1 rating.
Ect Engine Coolant Temperature Sensor 2364 posts · joined 2013. #2 · mar 19, 2018. the coolant temp sensor is at the top of the water pump. however, it only sends a signal to the dummy gauge on the dash. the reading that you are seeing on your diagnostic tool is an erroneous measurement and means nothing. the pcm controls the engine looking at oil temp only and has no reference. 11286 posts · joined 2009. #4 · mar 16, 2012. the stock coolant gauge will show 'normal' at about 150*f or so. maybe a touch less. so the thermo is probably stuck closed, or the ect sensor is bad but doubtful. if you're in there doing the thermo, i'd do a good flush and swap over to elc with a cat ec 1 rating. Let us know what you find. this from the repair manual: disconnect sensor ensure temperature sensor connector is in good condition. turn ignition off. disconnect coolant temperature sensor. turn ignition off. if temperature gauge indicates cold, go to next step. if temperature gauge does not indicate cold, go to step 3). 2. 2488 7.3l coolant gauge erratic some 2002 f series super duty and excursion vehicles equipped with the 7.3l di engine may exhibit erratic coolant temperature gauge readings. to service, verify that the engine temperature sender has a grey (not black) plastic hardshell connector, and that the corresponding wire harness connector is also gray.
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