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Old 11-11-2013, 11:04 AM   #1 (permalink)
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Mpg computer

I am rebuilding a base model 97 dodge ram 2500 extended cab with 12 valve cummins, my question is if I get an upper console out of anouther 97 diesel will it plug In and work? Does it have to be out of a 97 or a diesel? Mine just has the cubby up top
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Old 11-11-2013, 11:05 AM   #2 (permalink)
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Also, anyone know any quick and easy ways to up fuel mileage, I am going on a 2000 mile trip soon and last time I only got 15 mpg
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Old 11-11-2013, 01:37 PM   #3 (permalink)
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There is one good way to improve your MPG. Drive slower. Were you driving 75 or 80 last time?

I have 3.54 gears. Driving my truck home I got 23.5 and 26 mpg. The previous owner said he got about 17. The only difference was driving style. I was driving at 54 mph and 1,500 rpm. When I was close to home I cranked up the speedometer to 70 mph and about 1,900 rpm. That got me about 18 mpg. Driving these trucks you either can have speed or mpg. Go fast and use more fuel or go slow and take more time.

You can try driving at different speeds. Perhaps driving 65 or 62 will net you better mpg than driving 67 or 70 would. For your best mpg 1,500 rpm is probably best unless you are loaded.

I am not sure that a factory mpg computer would work. However, one person said that a plug in OBD2 mpg gauge worked for them. It did however take some adjustments to have it give any useful readings. I am not sure if it ever read accurately or not.
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Old 11-11-2013, 01:50 PM   #4 (permalink)
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The 12 valve does not have an engine control module. With no imput, a mpg calculator wouldn't work, so no '97 overhead readout would include mileage. Hand calculator or a stubby pencil & paper are your choices. Besides, in the vehicles I have owned with computers the mpg readouts were never correct anyway. Just a waste of electrons.
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Old 11-11-2013, 04:58 PM   #5 (permalink)
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Compass and temp. should work and be of more use.
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Old 11-11-2013, 05:13 PM   #6 (permalink)
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thats all the Pre 98.5s had was Compass and Temp, No MPGs. my 98 has the over head display, and all i got is how cold, and which way.

The only way your going to be able to calculate MPGs is with your odometer and the diesel pump.
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Old 11-12-2013, 05:48 PM   #7 (permalink)
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Quote:
The only way your going to be able to calculate MPGs is with your odometer and the diesel pump.
or this FloScan Instrument Co. Inc.
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Old 11-12-2013, 05:56 PM   #8 (permalink)
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Old 11-27-2013, 09:55 AM   #9 (permalink)
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My scangaugeii works well in my 96. Two fill ups and it has been pretty spot on. I hate that this auto likes to get better mpg at 1500 rpm cause I feel like that is lugging. My 24v gets the best mileage at 2200 rpm so this low rpm driving stuff is annoying. I usually end up going about 60-65 and getting 19 mpg.
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1996 2500 QCLB Built 47re. 3.55 axles. 5" TBE. BHAF. 4K's. 16.5 timing. Afc work. #100 plate. Torktek OFV. Fluidamper. Isspro gauges. 254k miles.
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