The sensor for the engine coolant on a 1991 Ford Probe LX is inside of the coolant tank. There is a lever, and when the fluid gets below this lever, it signals to be checked. It should be refilled.
The coolant gauge temp sensor is a one wire sensor located on the right rear of the engine block.
How can I check the ENGINE COOLANT TEMPERATURE (ECT) sensor on my 1991 HONDA PRELUDE SI 2.1L
On the engine block, near the thermostat housing.
Which temperature sensor? There is an air-fuel charge sensor, and a coolant temp sensor.
engine coolant is getting into an engine cylinder , from a bad head gasket , warped or cracked head
The best way is to find someone with a scanner that tells you what every sensor is doing.
intake manifold vaccum leak
By the thermostat
on the right side of the block just above the trany The sensor is located just above the manfol.
problem with the coolant sensor check the connection on the sensor reset your OBD I code if that don't work replace the coolant sensor
sould be on the manifold
The engine coolant on a 1991 Honda Civic is replaced by turning the drain petcock and releasing the coolant. The filler cap is then removed and coolant added until the system is full again.