Lenard Posted November 26, 2009 Share Posted November 26, 2009 i was wondering if anyone else on here uses this switch while driving, when I'm on the hwy i will flip it to "comfort" so when i hit a hill i can give it more gas to hold my speed and it won't shift to 3rd gear, or when I'm in town and the speed limit is 35-40 ill put it on "comfort" to drop the rpm's a couple cause it won't shift to OD at that speed. Link to comment Share on other sites More sharing options...
Blue XJ Posted November 26, 2009 Share Posted November 26, 2009 i leave it in comfort all the time, i never really notice any difference. Link to comment Share on other sites More sharing options...
Lenard Posted November 26, 2009 Author Share Posted November 26, 2009 i leave it in comfort all the time, i never really notice any difference. well with your motor and gears...... :rotfl2: i always like to have it on power when accelerating other wise pathetic when trying to get anywere Link to comment Share on other sites More sharing options...
JeepcoMJ Posted November 26, 2009 Share Posted November 26, 2009 the majority of people will tell you to just keep it in power mode. chrysler did some testing in the early 90's and found out it's better in power mode, so they did away with the switch and hardwired it into power mode. Link to comment Share on other sites More sharing options...
project88mj Posted November 26, 2009 Share Posted November 26, 2009 :agree: just put her in power mode Link to comment Share on other sites More sharing options...
Lenard Posted November 26, 2009 Author Share Posted November 26, 2009 i know everybody says keep it in power mode, i just like to keep from it if possible from down shifting to 3rd at 70 mph Link to comment Share on other sites More sharing options...
project88mj Posted November 26, 2009 Share Posted November 26, 2009 why are you needing to go that fast in the first place? these jeeps are not as areodynamic as you would think and if you lift them that makes it all that much worse. the drag on the comanche really sucks. and IIRC 55-60 is where i got the best fuel economy. so maybe try slowing down a little. you don't press the gas so hard, it won't make it down shift as much :smart: Link to comment Share on other sites More sharing options...
Lenard Posted November 26, 2009 Author Share Posted November 26, 2009 why are you needing to go that fast in the first place? these jeeps are not as areodynamic as you would think and if you lift them that makes it all that much worse. the drag on the comanche really sucks. and IIRC 55-60 is where i got the best fuel economy. so maybe try slowing down a little. you don't press the gas so hard, it won't make it down shift as much :smart: just keeping up with city traffic. don't usually run 70, i like to stay at 65, truck likes it better to, but when I'm in a hurry ill step it up a notch. if i don't give it very much gas i will drop 20 mph or more trying to get up a hill with my 31" tires and crappy 3.55 gearing Link to comment Share on other sites More sharing options...
project88mj Posted November 26, 2009 Share Posted November 26, 2009 sounds like 4.11 are in you near future Link to comment Share on other sites More sharing options...
Lenard Posted November 26, 2009 Author Share Posted November 26, 2009 sounds like 4.11 are in you near future yes sir :D :cheers: Link to comment Share on other sites More sharing options...
project88mj Posted November 26, 2009 Share Posted November 26, 2009 maybe 4.56 so you can look at 35" later on Link to comment Share on other sites More sharing options...
Lenard Posted November 26, 2009 Author Share Posted November 26, 2009 maybe 4.56 so you can look at 35" later on well maybe way down the road but not now, its my dd so i need half @ss good MPG :yes: Link to comment Share on other sites More sharing options...
project88mj Posted November 26, 2009 Share Posted November 26, 2009 then slow down it is the best way to improve your gas milage Link to comment Share on other sites More sharing options...
kro10000 Posted November 26, 2009 Share Posted November 26, 2009 Whats interesting to note is toyota used pretty much the exact same transmission, but kept the power/comfort switch Link to comment Share on other sites More sharing options...
JeepcoMJ Posted November 26, 2009 Share Posted November 26, 2009 I run 33's and/or 35's with 4.10 gearing (factory...4.09 rear, 4.11 front). I've just done away with the 33's. with 33's I get around 18mpg city, 21-22 highway. with 35's I get 17 city, 21-22 highway. not a noticeable difference in mpg, although it does dog down a bit more. shifts fine, but I manually shift my aw4. Link to comment Share on other sites More sharing options...
mvusse Posted November 26, 2009 Share Posted November 26, 2009 With the higher torque peak, it seems the HO engines get better mileage in the power setting. Don't know about Renix engines. I usually had it on comfort with the stock tires, now leave it on power with the 33s. But I still run the stock gearing. As for no need to go 70? Last long trip I took, to Badlands in Indiana, I was going to take it easy, but the truck wanted to run. I managed to keep it to 60 for about 45 minutes before it began creeping up. By the time I hit Columbus I was going 70, and before Indiana I was cruising at 80. I started thinking about the time to get to my destination, and decided to keep it at 80, only slowing down when the nice folks driving the semis alerted me of Smokeys over the CB. Got to my destination more than an hour earlier than I had planned, and didn't mind having the extra time to set up camp and cook supper. Averaged 19 mpg for the trip, which I didn't consider bad at all running 6.5" lift, 33x12.50s at that high a speed. Lotsa wind resistance. Took me a long time to get back, though, battling overheating issues caused by a mud caked radiator, as well as a small leak that prevented the cooling system from getting to full pressure. Was boiling over at temperatures I should have been at. All fixed now, though. Will move 4.10 gears at some point in time, but have other things to spend my limited money on first, like a new set of play only tires. Any secret Santa out there wanting to give me 4 new 35x12.50 MTs? :D Link to comment Share on other sites More sharing options...
Blue XJ Posted November 26, 2009 Share Posted November 26, 2009 I run 33's and/or 35's with 4.10 gearing (factory...4.09 rear, 4.11 front). I've just done away with the 33's. with 33's I get around 18mpg city, 21-22 highway. with 35's I get 17 city, 21-22 highway. not a noticeable difference in mpg, although it does dog down a bit more. shifts fine, but I manually shift my aw4. With my stroker, 4.56's and 32" BFG's I was getting about the same, 17 city, 21-22 highway. Now that I have 35" Truxus, I am down to about 15 city, 17 highway. Link to comment Share on other sites More sharing options...
JeepcoMJ Posted November 27, 2009 Share Posted November 27, 2009 I run 33's and/or 35's with 4.10 gearing (factory...4.09 rear, 4.11 front). I've just done away with the 33's. with 33's I get around 18mpg city, 21-22 highway. with 35's I get 17 city, 21-22 highway. not a noticeable difference in mpg, although it does dog down a bit more. shifts fine, but I manually shift my aw4. With my stroker, 4.56's and 32" BFG's I was getting about the same, 17 city, 21-22 highway. Now that I have 35" Truxus, I am down to about 15 city, 17 highway. you should be getting more than that... the truck I have that gets that mileage is my 87, converted to 95 H.O. from an xj, with a bored .030 factory reman, 2001 intake manifold, borla header, either 60 or 62mm bored TB, 19lb injectors. it's not stroked...if I were to stroke it, power to weight increase would net an mpg increase as well. my 86 mj with the 96 camaro buick 3800 gets around 24mpg city, 29-34mpg highway...it's 4x4 with 3.55's and 31's. dad's 2.1 renault turbo diesel mj gets 30-36 Link to comment Share on other sites More sharing options...
Blue XJ Posted November 27, 2009 Share Posted November 27, 2009 Thats what I don't get. I didn't change anything, other than the tires and it knocked it down 4mpg, oh well. I don't drive it much. Link to comment Share on other sites More sharing options...
mvusse Posted November 27, 2009 Share Posted November 27, 2009 Different tires can be made of different types of rubber, affecting gas mileage. Tread also affects it, as well as tire pressure. Link to comment Share on other sites More sharing options...
JeepcoMJ Posted November 27, 2009 Share Posted November 27, 2009 Different tires can be made of different types of rubber, affecting gas mileage. Tread also affects it, as well as tire pressure. plus going up several sizes with stock gears will also give you terrible mileage Link to comment Share on other sites More sharing options...
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