I believe I have a 2001 Thomas Saf-T-Liner MVP ER (EF?)
I have been working on my conversion for a year and am finally titled and insured. I took it to a mechanic to get an oil change, fuel filter change, and general inspection to see if it's ready to take on a trip.
When I started it, the check engine light came on. I was 6 miles from my mechanic so I let it idle for 10 minutes and then hit the road. I had a lot of distractions as it was my first time driving the bus, but it seems like the engine was limited. I couldn't get past 35 and about 1900RPMs. A mile out from the mechanics, the light switched off and the bus had more power and hit 45.
The mechanic gave it a clean bill of health, said he gave it a test drive and it was great, and he hadn't seen any limit or check engine light.
So later I was driving it away from the mechanics after hours and it did the same thing but the check engine light never went off and the RPMs never went above 1900-2000.
What is going on? Am I destroying my bus?
I just found the manual so hopefully I can get a fault code soon.