Ken,
I just learn to fix simple car problems and my knowledge is so limited. I did not know the A/C could trigger the front fan. I should have done it earlier.
I replaced the fan thermostat. I started the car and turned on the A/C. The fan started to work almost immediately. After 30 seconds the fans stopped. Started again in 20-30 sec, stopped again. Is this normal? (Not run continuously)
I thought I have fixed the issue if the behavior is normal. But I was lost after I tested the old thermostat. Looks like it is good and behaves the same as the new one. (I learned from a YouTube video: put to ohms and touch the pin using a multimeter and use a hair dryer to heat the thermostat and I saw the reading going down.)
Really do not know what’s going on. In the summer it was super-hot in the front and my hand could not even touch the hood support rod.
I also bought the round thermostat (see attached picture). It can be installed inside the coolant tube. When the coolant temperature is high it will open and let the coolant to circulate. But I do not think I need it. Yesterday I drove the van for about half an hour. Then I touched the coolant tank and could feel the coolant inside is hot. That means the coolant was circulated. If the thermostat is bad and never open, the coolant should remain cold all the time. Am I correct?
Thank you and Merry Christmas,
Ming
Friday, December 22nd, 2023 AT 1:51 PM