boost mileage on 84 5.0? Reply #15 – August 02, 2008, 10:34:10 PM Go down to your local auto parts store and pick up a code reader for $30. I know, I know, the codes can be pulled using a paperclip and a multimeter, but it's so much easier to get a reader, especially at that price. I used to be in your position (throwing parts at problems) until I'd practically replaced every sensor I could get my hands on. If only I'd spent the 30 bucks on the reader, I could have saved buying a couple of things... Moral of the story - Get the codes and check back. Quote Selected
boost mileage on 84 5.0? Reply #16 – August 02, 2008, 11:09:10 PM Check the vacuum line to your MAP sensor. My car was running super-rich before CJ and it turned out the vacuum line was rotted. Had it changed out before going, and averaged 22MPG over the trip. Quote Selected
boost mileage on 84 5.0? Reply #17 – August 03, 2008, 05:15:27 AM "Race Oil" ?Is this 84 CFI 5.0 a "race" motor? Quote Selected
boost mileage on 84 5.0? Reply #18 – August 03, 2008, 01:57:27 PM well not really but occasonaly its 5-20w valvoline specified for high heat Quote Selected
boost mileage on 84 5.0? Reply #19 – August 03, 2008, 06:41:48 PM Thats not race oil. Race oil is like strait 30, 40 and 50 weight. Quote Selected
boost mileage on 84 5.0? Reply #20 – August 05, 2008, 06:26:08 PM oh ok i get kick ass mpg on highway! 22-25 Quote Selected
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