Transmission temp.
I have a 2001 Winnebago Brave towing a 99 Jeep Grand Cherokee LTD. On a recent trip the trany temp was running from 175 to 185 degrees on the interstate at about 65 mph but when we hit stop and go tra...
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190 is no problem. You really don't want to drive the motorhome to often when the temperature is not above 165 before shutting it off. This can cause condensation within the transmission oil to collect water vapor, while going above 180F will boil out all that moisture.
215F is also not a problem if it is temporary. 215 for a long distance, or while on a flat area indicates the need for a larger transmission cooler. . If it reaches 230F, you can slow down, and this should reduce the transmission temperature right away. 250 can be damaging to the transmission, so if it goes that high, pull over and rev the engine enough that it starts to cool down (don't shut it off, that stops the cooling process). 300 and I hear that the transmission fluid is good for about 500 miles. 275 and it is good for all of 1,000 miles. 260 is good for around 3,500 miles. 250 - 5,000 miles. 215 and you still should change the fluid every 15,000 miles, to that it stays fresh, and looks red. If it turns brown, then change it right away!
If you just bought the RV, it is a good idea to flush out the fluid, and change the rear axle fluid as well. Brake fluid is only good for about 7 years, some change it at 6 years old.
If you drive the rv up a steep mountain grade, and do not hear the fan clutch engage, it is probably bad, and needs replacement. That will bring down the coolant and transmission temperature fairly quickly. If you are running 215 F transmission fluid, then the clutch probably engages, then gets really noisy, and pulls about twice as much air through the radiator, providing a lot of cooling.
Have fun camping!
Fred.
215F is also not a problem if it is temporary. 215 for a long distance, or while on a flat area indicates the need for a larger transmission cooler. . If it reaches 230F, you can slow down, and this should reduce the transmission temperature right away. 250 can be damaging to the transmission, so if it goes that high, pull over and rev the engine enough that it starts to cool down (don't shut it off, that stops the cooling process). 300 and I hear that the transmission fluid is good for about 500 miles. 275 and it is good for all of 1,000 miles. 260 is good for around 3,500 miles. 250 - 5,000 miles. 215 and you still should change the fluid every 15,000 miles, to that it stays fresh, and looks red. If it turns brown, then change it right away!
If you just bought the RV, it is a good idea to flush out the fluid, and change the rear axle fluid as well. Brake fluid is only good for about 7 years, some change it at 6 years old.
If you drive the rv up a steep mountain grade, and do not hear the fan clutch engage, it is probably bad, and needs replacement. That will bring down the coolant and transmission temperature fairly quickly. If you are running 215 F transmission fluid, then the clutch probably engages, then gets really noisy, and pulls about twice as much air through the radiator, providing a lot of cooling.
Have fun camping!
Fred.
