Engine Cooling Fan Runs When Ignition is Switched to On Position and After Shutdown
#1
Engine Cooling Fan Runs When Ignition is Switched to On Position and After Shutdown
I have a 1994 Volvo 850 Turbo.
My engine cooling fan runs constantly as soon as I turn the ignition switch on (before engine starts) and for a few minutes after shut down. This behavior is not related to engine temp. It can be stone cold and still the fan runs.
The temp gauge on the dash reads the correct temp and stays stable at about 3 o'clock once the car has warmed up.
The thermostat is good.
I replaced the ECT sensor and nothing changed.
I tried a different fan relay (from another 850 that works correctly), and that didn't change anything (not that I expected it would, but hey, I’m grasping at straws now).
On a hunch, I disconnected the ECT sensor (thinking I might have a wiring problem or something) and the temp gauge inside the car still operated normally. Is there another temp sensor that could be the culprit?
Any help would be greatly appreciated.
Thanks,
Jay
My engine cooling fan runs constantly as soon as I turn the ignition switch on (before engine starts) and for a few minutes after shut down. This behavior is not related to engine temp. It can be stone cold and still the fan runs.
The temp gauge on the dash reads the correct temp and stays stable at about 3 o'clock once the car has warmed up.
The thermostat is good.
I replaced the ECT sensor and nothing changed.
I tried a different fan relay (from another 850 that works correctly), and that didn't change anything (not that I expected it would, but hey, I’m grasping at straws now).
On a hunch, I disconnected the ECT sensor (thinking I might have a wiring problem or something) and the temp gauge inside the car still operated normally. Is there another temp sensor that could be the culprit?
Any help would be greatly appreciated.
Thanks,
Jay
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