- Jan 22, 2014
- 359
So recently I have noticed the fan on the tahoe running alot. More than what I want to say normal. The reason I want to say more than normal is because I am noticing it. I did not notice it as much last year. I have tried to shake the conclusion that I have some underlying cause, but I can't shake the fact that I KNOW I am noticing it, where I haven't in the past.
Now the weather has warmed up, so maybe i'm imagining it or remembering "last year" incorrectly. I don't really know.
This is what I do know. Temp is always reading 210 once warmed up. I towed the trailer to ohio and back this past weekend. I feel if I had an overheating problem it would have shown up while towing in 85 degree heat. I know that when you leave the AC on from last drive cycle it will command a fan on when started, and that when you don't it won't. It does both of these things as described.
But what it also seems to do is run much longer than I would expect. Its not like its cycling on and off every 5 min or something. Its like it stays on the majority of the drive cycle. I mean lets say its running hot and the fan comes on to cool it down...I would expect at some point it would have done its job and been commanded off, right?
From what I could figure out on the alldata site, its a dual fan electric fan system. It isn't like the electro-viscous fan on the wifes envoy...which seems to be on its way out...but at least I know what that is. lol
There isn't any codes store or any pending codes. I haven't done anything to the cooling system ever, sans for adding a small amount of dexcool to it prior to the last trip, just to hit the full cold mark on the bottle.
Thoughts? Am I crazy? Air bubble in the system maybe? (though without ever doing anything not sure how that happened) T-stat or coolant sensor on its way out?
Now the weather has warmed up, so maybe i'm imagining it or remembering "last year" incorrectly. I don't really know.
This is what I do know. Temp is always reading 210 once warmed up. I towed the trailer to ohio and back this past weekend. I feel if I had an overheating problem it would have shown up while towing in 85 degree heat. I know that when you leave the AC on from last drive cycle it will command a fan on when started, and that when you don't it won't. It does both of these things as described.
But what it also seems to do is run much longer than I would expect. Its not like its cycling on and off every 5 min or something. Its like it stays on the majority of the drive cycle. I mean lets say its running hot and the fan comes on to cool it down...I would expect at some point it would have done its job and been commanded off, right?
From what I could figure out on the alldata site, its a dual fan electric fan system. It isn't like the electro-viscous fan on the wifes envoy...which seems to be on its way out...but at least I know what that is. lol
There isn't any codes store or any pending codes. I haven't done anything to the cooling system ever, sans for adding a small amount of dexcool to it prior to the last trip, just to hit the full cold mark on the bottle.
Thoughts? Am I crazy? Air bubble in the system maybe? (though without ever doing anything not sure how that happened) T-stat or coolant sensor on its way out?