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How can I check the ENGINE COOLANT TEMPERATURE (ECT) sensor on my 1991 HONDA PRELUDE SI 2.1L
On my '91 it's below the thermostat.
go to acura-legend.com search the forum
no sensor only a thermostat
That would be the electrical switch right beside the thermostst housing and is screewed into the intake manifold.
The themostat is located in the top rad hose on the engine side, but I don't know about the sensor. In my 91 the coolant temp sensor is in the thermostat housing and the engine temp sensor is on the block.
On the intake manifold.
yes
12 means that the battery was recently disconnected or lost voltage. 22 means that Engine Coolant Sensor is out of normal range (replace the coolant sensor).
Code 16 Air temperature sensor fault
Change the Coolant Temp sensor
Try replacing coolant temp sensor.