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Fuel mileage increase after repair

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BGMAC

RVF 1K Club
Joined
Jan 28, 2020
Messages
1,186
Location
Cypress Inn, TN
RV Year
2016
RV Make
Forest River
RV Model
Georgetown XL M-369DS
RV Length
37ft
Chassis
F53
Engine
Titan V10
TOW/TOAD
2024 Chevy Colorado
Fulltimer
No
About week ago I set out on a trip to Florida. I got about 60 miles and the throttle quit functioning. The engine just went to idle. I pulled over and pulled out my ODB2 scanner and had a code indicating throttle body issue. I reset the code and got the rv going again and headed home. I made sure I did not run at the same cruise speed thinking the might be a bad spot in the sensor. Got home ordered a new throttle body.
When I received it, I installed it. With a new throttle body you have to clear the ecu throttle memory or reset to do a throttle relearn, then run at Idle for 15 min.

Well then I took off on my trip again. The engine seemed to run much better. On my first fuel stop I got 7.5 mpg which was much better then my 6+ mpg. On my second stop I got 8.5 mpg. I could not believe it. I went back and checked to make sure I filled the tank full.

Now I know terrain has a lot to do with, but I got the 6+ on the same trip several months ago ago.

I’m pretty sure doing the relearn had a lot to do with it.

Just thought I’d pass it on.
 
About week ago I set out on a trip to Florida. I got about 60 miles and the throttle quit functioning. The engine just went to idle. I pulled over and pulled out my ODB2 scanner and had a code indicating throttle body issue. I reset the code and got the rv going again and headed home. I made sure I did not run at the same cruise speed thinking the might be a bad spot in the sensor. Got home ordered a new throttle body.
When I received it, I installed it. With a new throttle body you have to clear the ecu throttle memory or reset to do a throttle relearn, then run at Idle for 15 min.

Well then I took off on my trip again. The engine seemed to run much better. On my first fuel stop I got 7.5 mpg which was much better then my 6+ mpg. On my second stop I got 8.5 mpg. I could not believe it. I went back and checked to make sure I filled the tank full.

Now I know terrain has a lot to do with, but I got the 6+ on the same trip several months ago ago.

I’m pretty sure doing the relearn had a lot to do with it.

Just thought I’d pass it on.
I assume your fuel mileage is hand calculated?
 
Well I don't know what was responsible for such an improvement, but that's great!
 
Well I don't know what was responsible for such an improvement, but that's great!
Yea, I can only think the clearing the memory had a lot to do with it. It came at a good time. Around my daughter’s house in Clermont Fl gas is $3.20 per gallon
 

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