Got to the coach this morning, installed the new air filter, fired it up, and after a 2 second puff of smoke it purred like a kitten, oh by the way I got the revised bill via email from Cummins in Vancouver, the service call didn't cost $450.00 it cost $890. With tax, $2000.00 to fix a bad air filter, I am going to be making some phone calls on Monday, that's for sure.
One more problem though , as I mentioned before, after about 45 minutes to an hour, the unit still dies, checked the code this time and it was over temperature, Ed , in an earlier post you mentioned the fan belt possibly slipping, I took a quick look in there and the rad in on the bottom of the unit in the front, can't see how it could have a mechanical fan, just wondered if anyone had any ideas as to why it might be overheating. The coolant is topped right up.
Dave