On a return home trip last year my engine heated up to 205 degrees and for years it has run around 195. The first thing that I did was change the thremostat and the hoses.. no change still 205 to 210. Installed new larger radiator and removed the fan clutch and installed two large electric fans on the radiator and one on the a/c condensor. No change.
Removed the heads and had them checked for cracks and none were found.. Reinstalled heads and no change in the temp.. I have checked all brakes and none of them are dragging.. On several occasions I have talked to the GM Techs at the factory and they said that it may be a clogged heater core.. bypassed heater core and no change in temp.. If I maintain a speed of 55 the temp stays around 205 to 210. If I go fasters the temp will climb up as the speed increases.. I am out several bucks on this problem and it is stll with me.. If anyone has any suggestions at all I would appreciate hearing from you.. The next option is to go to a new 502 crate engine.. but I only have 41000 miles on the coach and I do not want to get rid on it..
Thank you for your time and help..
alcusmc
Removed the heads and had them checked for cracks and none were found.. Reinstalled heads and no change in the temp.. I have checked all brakes and none of them are dragging.. On several occasions I have talked to the GM Techs at the factory and they said that it may be a clogged heater core.. bypassed heater core and no change in temp.. If I maintain a speed of 55 the temp stays around 205 to 210. If I go fasters the temp will climb up as the speed increases.. I am out several bucks on this problem and it is stll with me.. If anyone has any suggestions at all I would appreciate hearing from you.. The next option is to go to a new 502 crate engine.. but I only have 41000 miles on the coach and I do not want to get rid on it..
Thank you for your time and help..
alcusmc