02 sensor, mileage
#11
09-03-2010 | 09:47 PM
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Can't wait for your MPG results
I have a 98 4wd, 360, auto, 3.55 gears. Has had a recent tune up (plugs, wires, cap, rotor button). Has never had plenum replaced in 147k miles. I can't make it spark knock if I try, and it passes the tsb test and burns very little oil, so I think the plenum is ok for now. It has never had the 02 sensor replaced. It runs great and has no codes. I was thinking about replacing the front 02 sensor just to see if I could possibly get a little better gas mileage. Currently, I can get about 13 mpg, mostly highway (hilly highway), running about 70 with cruise on. So what do you guys think? Try the 02 sensor and see if it helps any, or is 13 mpg about it and I should spend the money on something else? I've seen posts where people say they get 18 mpg and what not, but I'm a little skeptical of their math.
#12
09-04-2010 | 12:23 PM
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I actually would like to do the plenum repair with the hughes kit, just for peace of mind. I think after I did it, I'd be mad at myself for wasting the time and money when nothing changes (mileage, performance). I just don't have the time to dedicate to it with a wife, job, and 2 kids. Can't find a couple of days to take it off the road and work on it. And don't know anyone else I'd trust to do it either. Maybe one of these days I'll get around to it. To the guys that have already done the plenum, after driving a month or so, you're telling me there's no oil down there? Not a film even?
#14
09-04-2010 | 08:38 PM
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I actually would like to do the plenum repair with the hughes kit, just for peace of mind. I think after I did it, I'd be mad at myself for wasting the time and money when nothing changes (mileage, performance). I just don't have the time to dedicate to it with a wife, job, and 2 kids. Can't find a couple of days to take it off the road and work on it. And don't know anyone else I'd trust to do it either. Maybe one of these days I'll get around to it. To the guys that have already done the plenum, after driving a month or so, you're telling me there's no oil down there? Not a film even?
There you go again saying exactly why I haven't done it yet, right down to 2 kids. humm do I have a second account for my other personality. Damn good thing you are in Miss. I would think I finally lost a grip on my mind. I have to warn you if I ever get the time to do that plenum for piece of mind I am going to swear that it made a world of difference to justify it to myself.
#16
09-04-2010 | 11:08 PM
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Whatever DF bud. Just so you know. If you search here for the posts I've made in the last few years, you will find one or two where I state the factory TSB test is a waste of time. Both of my trucks passed that useless test. And when I took them apart, sure enough the gaskets were blown. The 98 was real bad and the 2000 was a small leak which thank God I caught before bigger problems . Which is all I was trying to tell you. Have a great Labor Day weekend and don't drink too much like I am going to. LOL
Actually how stupid am I? LOL I have worked on at least 30 various Magnum motors from Rams to Jeeps to Dakotas, helping people out. Not just my two. And before I found this site, I just replaced the lower gasket. Since then those people or there rides are long gone. So I don't know the results of how long the the gasket actually lasted.
Actually how stupid am I? LOL I have worked on at least 30 various Magnum motors from Rams to Jeeps to Dakotas, helping people out. Not just my two. And before I found this site, I just replaced the lower gasket. Since then those people or there rides are long gone. So I don't know the results of how long the the gasket actually lasted.