What;s Wrong With My RAM Truck????
Our 2005 Ram 3500 Diesel (5.9) SRW has been a great tow vehicle for our 7-ton 5th wheel trailer. And after 150 thousand miles, three years ago we had to replace a couple of leaky hoses in our air conditioner. No surprise there. Since that repair, the AC blows cold and steady, towing or not. EXCEPT.
During this past year, on our last three return trips to Texas- one from the Great Lakes and two from Colorado- the blower quits working at about 350 miles from home. The AC is constantly cold, but without the fan blowing, we get very uncomfortable and downright HOT in the cab driving home in the Texas heat. In fact, on the last two trips, the blower quit in exactly the same place, a few miles south of Amarillo heading down 287 towards Dallas.
Each time, we’ve managed to get a little action out of the AC fan IF we can keep the RPM high as we travel. But if we stop at a red light and the engine is at idle, we get nothing. Cracking the window seems to help the blower also, but engine speed seems to be the key. Once on our last trip when climbing a hill, the tranny dropped to low and the fan started working perfectly as the RPM climbed to about 3000. But that lasted for about 3 minutes before dropping back into pathetic, weeny mode.
The Dodge House is clueless; they said the system only needed service which was performed prior to our most recent travel, but that had no positive effect on this fan problem. The AC works perfectly around town and all during the trip, except for the very last 350 miles.
Has anyone out there in RV land had this issue? If so, how did you fix it? Help!
During this past year, on our last three return trips to Texas- one from the Great Lakes and two from Colorado- the blower quits working at about 350 miles from home. The AC is constantly cold, but without the fan blowing, we get very uncomfortable and downright HOT in the cab driving home in the Texas heat. In fact, on the last two trips, the blower quit in exactly the same place, a few miles south of Amarillo heading down 287 towards Dallas.
Each time, we’ve managed to get a little action out of the AC fan IF we can keep the RPM high as we travel. But if we stop at a red light and the engine is at idle, we get nothing. Cracking the window seems to help the blower also, but engine speed seems to be the key. Once on our last trip when climbing a hill, the tranny dropped to low and the fan started working perfectly as the RPM climbed to about 3000. But that lasted for about 3 minutes before dropping back into pathetic, weeny mode.
The Dodge House is clueless; they said the system only needed service which was performed prior to our most recent travel, but that had no positive effect on this fan problem. The AC works perfectly around town and all during the trip, except for the very last 350 miles.
Has anyone out there in RV land had this issue? If so, how did you fix it? Help!
