2017 Jeep Cherokee
virginia lynn
7 years ago
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Jeep Wrangler: bad gas mileage
Comments (5)Which engine-transmission-transfer case do you have? There is difference in fuel mileage between the smallest to largest engine. You are reporting 10 MPG. Perhaps you have the honking big V8 in yours. In the past, I owned a '92 Jeep Cherokee and now have a '98 Cherokee, both with the 6 cy in-line, 4 liter engines. In good weather, highway mileage is 20+ mpg, but in this brutal winter, it has dropped to 15-18 mpg. I have found three factors that affect the mileage of my Jeep: 1. Low tire pressure - about 2 mpg. Inflate to 30-32 psi will get this back. 2. Low coolant temperature - about 2 mpg. If the thermostat is not working properly or is rated to open at too low of a temperature, the engine never gets warm enough. For the worst of cold, you may consider a radiator cover, but don't forget to open it as soon as the temperature rises to 20 F or so. 3. Failed temperature sensor, the one that sends engine temperature to the engine controller. There is a little hit for 2-wheel drive versus 4-wheel drive, but not as much as might be imagined because the front drive shafts, differential, and universal joints are engaged all the time anyway. However, this statement holds only for the "full time" mode. If your transfer case has only "part time" drive when in 4-wheel drive, it should be disnegaged for regular driving on surfaced roads. The part time mode is only good for mud, sand, and snow where the wheels are free to slip. Part time mode forces both front and rear drive shafts to turn at the same speed - no center differential action. The drive train may bind and be damaged if operated in the part-time mode on paved roads, and will bind when turing. Small differences in tire circunference between the front and rear tire sets will cause binding in the drive train when in part-time mode on surfaces where the tires can get a grip. The part-time-only transfer case has very limited on-road use - its for off-road and getting out of mud holes....See MoreMy Jeep's bumper is cracked.....
Comments (2)My bumper is mainly plastic. It is cracked bad. The screws behind the bumper are loose or fell out. The black part underneath is not damaged. It is a lease... I don't think I am getting it fixed until I turn the car in, something else may happen. It is also starting to peel again. The paint on the bumper again. I give up :( Sharon...See More06 Grand Cherokee oil change.....
Comments (6)Under the severe schedule the axle lubricant is indeed something that requires changing at 15,000 miles as per the manufacturer. The question comes back to, what is really severe useage? Because the drive train operates in 4WD all of the time, there is extra loading on the front and rear ring and pinion assemblies. Keeping the axle fluids flushed does increase the lifespan of these components considerably. Now granted as you say you only have a two year lease. We have talked about that before, you already prefer to waste money when it comes to getting your cars, why do you hesitate to care for them properly? Gary, re-think what you wrote. Use Sharons last post or two about damage to the vehicle, what was it four carfax reports? Brake wear is not and should not be warrantable. As far as "has she had trouble with the axles", that really is putting the cart before the horse. "Preventive Maintanence" is all about preventing problems with those components. Changing the axle fluid occasionally is all it takes to not have trouble with those. I adapted this very strategy to my Ford Explorer, even though it is NOT a recommended service until much later in it's life. The result? There are a lot of cars just like mine, that never even towed anything that have had axle failures. Mine is over 100,000 miles, and has towed 3000lbs+ some 65,000 of it and has no signs of any axle trouble. All I had to do was flush the axles at 20,000, then 50,000, then 80,000, and I'll do it every 30,000 until I no longer own the car. The best part is I don't even tow that trailer anymore like I used to. So there is much less stress on my Explorers drivetrain than there used to be. The fluids show this when I perform a service. BTW the tranny has gotten serviced the same way, and there are no signs of any major repairs looming there either. So what does this mean? It does not mean always change every fluid and the car will never break down, and that of course is the argument people that really want to get a pass on abusing a car are really looking for. It does mean that breakdowns are much less likely for those that service their cars correctly than they are for those that neglect them. There are a great number of people who jump on the lease programs that only want to drive something newer while never spending a penny on it and then dump it so it ends up as someone else's problem once it starts displaying just how abused it was. Owning a car, or even just leasing it still means taking care of it and fixing what breaks, and protecting what has not....See MoreJeep A/C
Comments (1)Is the compressor engaging and turning?? If the clutch is not engaging use a jumper wire to short across the low pressure switch this should engage the compressor, now check for cool air. If you have cool air replace the low pressure switch if no cool air and compressor is turning you will need a real set of gauges to check the low and high side pressures while the compressor is running to determine your problem....See More
jrb451
7 years ago
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