pgleason Report post Posted June 3, 2014 Hi: I have a series 1000 trans in a 2008 Holiday Rambler purchased in Jan. Went on a short trip trans overheat warning came on climbing a hill north of Grants Pass, Or on Interstate 5 not towing anything outside temp about 75 degrees. Pulled over soon as I could checked fluid, water temp both OK. Not sure of history on the trans unit has 26,000 miles on it. No external cooler only the standard one in the radiator. Did it again on return trip climbing hill out of Medford Or. outside air temp about 65. No sure what type of trans fluid is in unit. Should I consider installing an external cooler? I am going to change the fluid and filter to be sure I have the proper fluid and will use Castrol Transynd. Any other suggestions? Share this post Link to post Share on other sites
CarlAda Report post Posted June 3, 2014 My unit has an external cooler and I travel that road frequently. Never see an issue. I don't know that much about trannies so I can't advise as to what may be the issue. Share this post Link to post Share on other sites
wolfe10 Report post Posted June 3, 2014 pgleason, Welcome to the FMCA Forum. Have you verified with an IR gun that indeed you are overheating vs just a gauge or sending unit issue? I would call Monaco and describe the problem and ask them how to diagnose overheating vs gauge/sender unit problem. Monaco Technical: 877-466-6226 Share this post Link to post Share on other sites
