After 2 hours of freeway driving I entered the city. It was hot, had the AC on. After about 5 miles the 1997 motorhome, on a Ford 360 chassis, sputtered and died. Half hour later I was able to go 1/2 mile. Then half hour later went another 1/2 mile. Next morning it started fine, let it run for 10 minutes, no problem. Any ideas?

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Check fuel pressure gas filter and check air filters

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God bless you

is this calculated mileage or what the estimated mileage is showing on the dash. Have you checked to see what you get on just the freeway?

What are your driving habits like?

How is your tire pressure?

Do you make a lot of short trips?

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Depends on the way that you drive your car, but roughly about 26 city and 32 freeway

You might want to google recalls on the internet.
( http://www.recalls.gov/nhtsa.html )

I remember one such on that or the F-53 chassis.

Motorhomes are notorious for high heat buildup in the engine areas. There is normally not enough air flow in and around the engine which causes this condition.

My immediate thought is that the engine might be having a fuel heating problem. If fuel heats up too much, it turns to a vapor and then the injection system cannot perform its job. Look for some flexible, metallic insulation at your parts store and see if insulating the fuel lines from where they enter the engine compartment up to the injector rail provides any relief. I assume that at this point, fuel pressure has already been tested and found to be adequate.

it sounds like you've got an issue with the engine vacume line going to the booster. there's an in line one way check valve that keeps vacume in the booster in case of a loss of vacume, like if your truck stalled while driving. but there should always be vacume with the engine running. so check the vacume line going to the brake booster for kinks obstructions, and leaks.

75,000 miles for heavy urban city driving.
100,000 miles if you drive a lot of freeway.
Mix driving should be under 90,000 miles.
If your the timing guide (on the side of the timing belt cover) making noise then you should change it ASAP.
A loose timing belt will offset timing on the injector and decrease mileage.

I also have a 96' shasta RV 26' E350 Ford chassis... ABS light comes on whenever it feels like it. We have 20,000 miles on the RV. We love the Motorhome but am constantly worried about the light. Our mechanic said not to worry about it.. Not worth the expense to fix it. anyone have a clue? grandmanomi