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Ford Ranger 2.3L Electronic Thermostat - By White001

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2002 Ford Ranger 2.3L 4-cylinder p1432 code

I had this code on my Ranger. The dealer charged me $130.00 to tell me it's the electronic thermostat and wanted $500.00 more to fix it. I located one on Ebay and put it on myself for about $110.00. After I got the new one installed, the auto parts dude reset the check engine light and I was good to go. I inspected the old unit and sure enough, the little tiny connectors on the wire plug looked fried and black. I had to remove a keeper clip to pull that wire connector out for inspection. 

So based on my experience if you're getting P 1432 code and a fried connector, it may be time to replace the electronic thermostat.

Also of note is that I purchased a 2001 2.3 Ranger thermostat. The folks that sold it said it's the same part, so I trusted them and It's working well so far.

After closer inspection it looks like I broke the wires off a thermistor coming out of the thermo housing. It appears that the thermistor is imbedded in epoxy and it's fried to a crisp.

The 2001 and later 2.3L engines has a thermostat that is part of the housing. The thermostat and housing is replaced as a unit. It can be located by following the LOWER radiator hose down to the engine block.

 

 

 

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