WarNose
Full Access Member
So a couple of weeks ago I was pulling my trailer up the mountain and it was over 100 degrees outside. Everything was fine until I got to a particularly long, steep part and my transmission started getting too hot and the OD light began flashing. I had to pull over to let it cool. I ended up having to let it cool three times to make it to our camping spot. On the way back down the mountain we travelled early in the morning. The transmission was getting hotter than usual, but not too hot. But what was strange was that both times, going to and from, the transmission would not get any cooler on steep downhills with zero load on it. After we stopped for lunch the transmission began acting completely normal for the rest of the way home, but the OD light was still blinking.
At home I tested for the code and all I got was the code telling me to turn my AC off and try again. So I did that, but my code reader had already erased the code. So I guess I have to pull my trailer up a mountain during a heat wave to throw the code again, because now it's working fine.
I have a large transmission cooler installed. The fluid runs through the cooler first and then through the radiator. I think I'm going to try switching the order. Although the motor temp was probably 220 to 225 at the hottest. I was shutting it down when the transmission reached about 250.
Any thoughts?
At home I tested for the code and all I got was the code telling me to turn my AC off and try again. So I did that, but my code reader had already erased the code. So I guess I have to pull my trailer up a mountain during a heat wave to throw the code again, because now it's working fine.
I have a large transmission cooler installed. The fluid runs through the cooler first and then through the radiator. I think I'm going to try switching the order. Although the motor temp was probably 220 to 225 at the hottest. I was shutting it down when the transmission reached about 250.
Any thoughts?