I'm coming up on my fourth summer dealing with this issue on the Storm's generator. It's not pleasant driving all day in 95+ degree temps with only dash A/C and sweaty, grumpy kids riding along. Fleetwood has been great working with me and my dealer, but it's still frustrating. They've tried one thing at a time, and one of the problems is that I can't really test it until I can hit the road when temps reach the 90s. So far, we've tried the following:
1. Rerouted the exhaust toward the rear of the coach, near the motorhome's tail pipe.
2. Added sheet metal to shield heat from the V10 engine.
3. Added a vent to the compartment door with sheet metal and a rubber seal that forces the air intake to bring in outside air.
4. Earlier this year they relocated the fuel pump closer to the gas tank, mainly to get it away from the hot compartment. We'll see soon if that helps.
Have other Storm owners had this problem fully resolved? If so, what ended up working for you?