ENGINE COOLANT TEMPERATURE SENSOR/COOLING FAN
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ENGINE COOLANT TEMPERATURE SENSOR/COOLING FAN
I notice that my Honda civic 2006 cooling fan does not switch on when ect2 sensor is connected ( i.e when both ECT1 and ECT2 are connected) and engine temperature reaches 96oC (using OBII scanner) but switches on at 96oC when ECT2 sensor connector/plug is removed. what could be the reason/cause? I have experimented this on different occasions and noticed even at 98oC - 100oC, the colling fain doesn't switch on when ECT2 sensor is connected. I have replaced the ECT2 sensor with OEM but the issue still persists.
Anyone with clue about how i can resolve this issue should come to my aid. I have run out of idea.
Anyone with clue about how i can resolve this issue should come to my aid. I have run out of idea.
Joined: Jul 2022
Posts: 47
Likes: 2
From: CA
Re: ENGINE COOLANT TEMPERATURE SENSOR/COOLING FAN
Hello,
Do the fans come on with the A/C? The fans aren't designed to come on until the coolant temperature is 97 degrees Celcius, so the coolant temperature might not be warm enough to trigger the fans.
Do the fans come on with the A/C? The fans aren't designed to come on until the coolant temperature is 97 degrees Celcius, so the coolant temperature might not be warm enough to trigger the fans.
Thread Starter
Honda-Tech Member
Joined: May 2022
Posts: 3
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Re: ENGINE COOLANT TEMPERATURE SENSOR/COOLING FAN
Joined: Jul 2022
Posts: 47
Likes: 2
From: CA
Re: ENGINE COOLANT TEMPERATURE SENSOR/COOLING FAN
As mentioned above, if the coolant temperature is getting hot enough to trigger the fan, you'll want to check for a faulty sensor. There is a TSB that indicates ECT2 could have loose or corroded terminals: https://www.tsbsearch.com/Honda/09-092
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97civicdx
Honda Civic / Del Sol (1992 - 2000)
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Jul 20, 2010 05:04 AM