About 3 months ago I felt cooling fans were running more often, specially the second one (the one that seems like a plane...). Although I never felt that water temp went over 90º, one day after a spirited drive, when I slowed down and halted in a traffic light, the second fan began (normal, under the circunstances...) but then the temperature gauge suddenly reached 120º and in the next second it went back to 90º. All of this in sudden moves of the indicator.
I took the car to the dealer, they test drove the car and logged the temperature and they didn't find anything strange. After that the engine runned fine...
Now, I began to feel the same!
The fans (2nd one) seem to run more often than it used to, specially in city traffic, and with longer operating times. I haven't seen more than 90º, though.
Today, after 2nd fan work, temperature indicator suddenly got below 80º and then went back to 90º step by step, but quickly... This happenned twice, in traffic...
I'm going to schedule another visit to the dealer because I'm afraid it could be something related to water pump, although it only has 7000 miles on it!
Another thing that I notice (although it don't know if it's related) is that when I switch off the engine, when hot, I ear some water bubbling inside. I think it's coming from the expansion tank.
Thank you in advance.