Quote:
Originally Posted by Rahulio1989300E
I looked for the coolant temp sensor. I think it is supposed to be right near cylinder 6 and is the last one in the line of sensors. People who posted previously kept mentioning about a 4 prong sensor but my sensor only has 2 prongs with two individual connectors coming from the wiring harness.
I searched the forum for the expected ohm values for a good sensor, but I was unable to find any posts or threads. (I know they exist, but my search terms are not finding the threads.)
Does anyone know how I should test the water temp sensor and what ohm values I need to be getting?
I do not have an air intake temperature sensor fitting to this car.
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This is what I based my actions on:
1. 4-pin main engine temperature sensor (by water pump) - (measured across diagonals).
HOT: 250 Ohms
WARM: 1200 Ohms
STONE COLD 2600 Ohms
2. 2-pin aux fan sensor (by water pump)
HOT: 459/468 ohms (measured each pin to earth) - didn't measure across the pins.
WARM: Open circuit (measured each pin to earth) 2600 Ohms (measured across the pins)
STONE COLD: Open circuit (measured each pin to earth) 6470 Ohms (measured across the pins)
3. Single pole (temp gauge?) sensor (by water pump) - (measured to earth)
HOT: 55 ohms
WARM: 290 Ohms
STONE COLD: 720 Ohms.
4. Air intake sensor (on air filter housing) - (measured across the 2 pins)
HOT: open circuit.
WARM: Open circuit
STONE COLD: Open circuit
Assume it's failed. The specified values are:
20C: 2500 ohms, 80C: 300 ohms.
So, my ECU thinks it's always about minus 50C outside!!!!
Hope it helps.
RayH