Where is the temperature sending unit on a 1991 olds toronado
Ok, you have three sensors on this engine that work together to manage the temperature reading that are sent to the gauge. i recommend checking all three to be safe. i will list the sensors and, locations below.
1. Coolant temperature sensor- Under hood, driver side, upper engine area, above
transmission bell housing, mounted in driver side
end of intake manifold.
2. Engine Temperature sensor- Under hood, driver side, upper engine area, mounted
on rear cylinder head
3. Temperature switch.- Under hood, center, lower engine area, above oil
filter, rear of coolant temperature sensor, mounted
in engine block
The sensors on the the thermostat housing sends information the PCM/ECU
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