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  #1  
Old 01-05-2016, 03:01 PM
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98Ram360 98Ram360 is offline
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Exclamation Really Poor Fuel Milage..? 1998 Dodge Ram 1500

Hello all, I am becoming a bit frustrated in my truck recently. It is a 1998 dodge ram 1500 sport 5.9l auto, and I'm only pulling in around 5 to 6 mpg. Granted I only drive in town, but I would at least expect 10-11 mpg. Here's some more background. About 4 months ago I added a gibson super truck exhaust, cat back set up. After about a month, the catalytic converter plugged up. In a pinch for money, I punched it out and I've been driving it. To me, it seems to be running incredibly rich, you can smell it easy. I'm guessing the reason the catalytic converter plugged up was due to it running rich in the first place. Any guesses on why it would be running so rich? I'm sick of using 1/4 tank everyday around town. Thanks in advance for any help!!
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Old 01-05-2016, 09:15 PM
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Jeezus Cappy, that's a bit excessive! I'd try to get it scanned for codes. You probably have a $40 sensor ginked. Could be an O2 sensor, Intake air temp sensor, Cam or crank sensor, EGR or some other do hickey. Autozone and even up here Walmart will scan for codes. Probably your cat is plugged too. I have a guy that removed my cats, made me custom cutouts and puts a sticker on. You should be getting way better. PM me if you can't figure it out.
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Old 01-05-2016, 09:38 PM
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98Ram360 98Ram360 is offline
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Yeah it is terrible! Cat has been gutted though, so it's not plugged (That's why I gutted it), and both O2 sensors are new as of a few months, and not cheap ones either. As far as codes, I have pulled them and I got nothing other than the O2 sensors when they were bad, and a misfire on cylinder 6. Which I think was due to the O2 sensors starving the engine of gas (reading to rich).
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Old 01-05-2016, 09:42 PM
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98Ram360 98Ram360 is offline
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Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
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Oh and greetings from Maine Just noticed you're a fellow mainah yourself.
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