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is it visually leaking oil from some where? if not it is probaly blowing blue smoke out of the exhaust which means the piston rings in the engine are bad, you need to rebuild your engine or drop in a new one

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15y ago
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12y ago

My grand cherokee 2005 is getting poor gas mileage- around 7.5miles/gallon. Does anyone have any ideas why this is so? Changed air filter and oil.

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11y ago

Look on oil filler cap or refer to owners manual

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14y ago

6 quarts for a six cylinder engine

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12y ago

10w30

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Q: Poor gas mileage in Jeep Grand Cherokee?
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What can cause the pcm to crash when reprogramming flashing a Jeep Grand Cherokee 1999 with jeep oem flashing tool?

There are a lot of things that will cause this. 1. Low battery voltage. 2. Flash tool has internal failure /issue 3. Poor connections from flash tool 4. Trying to flash the PCM with the wrong update


What causes an intake manifold to crack 2003 Jeep Grand Cherokee?

They almost always crack on the very front hold down ear. It is a poor design by Chrysler, and used ones are hard to come by. When torquing down the intake mounting bolts tighten them even, and a little at a time. 20ft lb is plenty on the front bolt. This is a problem in the 99-04 Grand Cherokee, and others using 4.0 engine.


Is it harmful to drive a jeep grand Cherokee with a vacuum leak?

prolonged use could clog up your catalytic converter with unburned fuel, but if the engine will stay running with the vacuum leak you shouldbe able to limp it home, be sure to get it fixed soon, the poor runing, the shaking, stalling, and sputtering will eventually lead to bigger issues.


What is the average expected mileage for a 2000 Jeep Grand Cherokee?

48,000-56,000. >>>Depends on the year you are asking! I would try Kelly Blue Book or some other service on the internet. Improvement to answer...hopefully I assume you mean MPG, not mileage. I get about 22MPG on mine and it has just under 100,000 miles. It is a Grand Cherokee Laredo. Well i have a 02 4.7l v8 and i get 15.8 mpg..and i light foot it! You will never get 22mpg not matter the v6 or v8! I do not live in the city its country which is mostly like highway! I have tried e3 spark plugs and they are not worth a dime. My jeep has 141k miles with stock everything never one problem! Just always use full synthetic oil. And change tranny oil every now and then.


Why doesn't your ac blow in your 2002 Jeep Cherokee?

The AC in all years of Jeep Cherokees blows......it also sucks. Go figure... It takes a really good automotive engineer to create a system that is so subject to failure and so difficult to repair. Good luck to you !! answer: I have to assume you have a Grand Cherokee. If the blower motor is not coming on the most common failure is a poor connection at the blower resistor module (located under the dash on the right side close to the firewall) this usually causes the wiring terminals to overheat and melt damaging the wire terminals and blower resistor module. this condition is most common on models with dual zone a/c system. you will need a new blower resistor module and a wiring connector repair package (available at dealer)

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When Coolant sensor is bad on 1997 jeep grand Cherokee what effect does it have on proformance?

Hard start, poor fuel mileage,...


How do you open the fuse box in an 08 jeep grand Cherokee?

If you can't figure out how to open the box you should not be in there. Take this poor vehicle to the dealer and be prepared to tell the nice man why you're bringing it in.


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Check your air filter


Tune up signs for a 2005 Dodge Grand Caravan?

Hard starting, poor performance, poor fuel mileage.


Where is the air conditioner drain line on a 1998 jeep grand Cherokee?

There isn't a drain line. The jeep has a unibody frame construction and the evaporator pan drains directly into a frame member making it impossible to blow air up a tube to clear the drain path. Very poor engineering in my opinion.


What can cause the pcm to crash when reprogramming flashing a Jeep Grand Cherokee 1999 with jeep oem flashing tool?

There are a lot of things that will cause this. 1. Low battery voltage. 2. Flash tool has internal failure /issue 3. Poor connections from flash tool 4. Trying to flash the PCM with the wrong update


What causes an intake manifold to crack 2003 Jeep Grand Cherokee?

They almost always crack on the very front hold down ear. It is a poor design by Chrysler, and used ones are hard to come by. When torquing down the intake mounting bolts tighten them even, and a little at a time. 20ft lb is plenty on the front bolt. This is a problem in the 99-04 Grand Cherokee, and others using 4.0 engine.


Why do you get poor gas mileage in your jeep commander?

Because it's an SUV. Try a fuel and induction cleaning, since the fuel filter is inside the tank and therefore not servicable.


Why is gas mileage poor in a 2003 Jeep liberty?

Low tire pressure, engine needs a tune up, excessive idle time, aggressive driving, etc.


What are Symptoms of a bad cam sensor on 94 grand Cherokee?

There are a few symptoms when a car has a bad cam sensor. A few of these are sputtering, poor acceleration, and the engine stalling.


Is it harmful to drive a jeep grand Cherokee with a vacuum leak?

prolonged use could clog up your catalytic converter with unburned fuel, but if the engine will stay running with the vacuum leak you shouldbe able to limp it home, be sure to get it fixed soon, the poor runing, the shaking, stalling, and sputtering will eventually lead to bigger issues.


What is a VIC on 1997 Jeep Grand Cherokee Laredo?

The Vehicle Information Center. It is basically an electronic display located below the A/C controls and cigarette lighter (in your particular model) that shows when doors are open, low tire pressure, and the like. The soldering in these VIC units has been known to be of poor quality and problems with them are somewhat common.