Question about 1999 Jeep Grand Cherokee

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My control center, ie temp, miles per gallon, miles to service etc. does not work except to show the n,e,s,w. At the same time, my power windows stopped working and the dome lights stay on while driving unless turned off at the column light switch. Is my Jeep possessed???

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It sounds like the computer for the dome light,and your control center,and the power windows,sounds like a fuse.

Posted on Jul 22, 2009

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Base on the year jeep chect with your dealer some of thes features as a problem that realated to your vehicle ecu

Posted on Jul 22, 2009

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2004 Honda Civic Hybrid. I drive the same route of 300 miles on the interstate 2 or more times a month. I drive the same speed each time at the posted speed limit which varies from 65- 70 miles/hour. I...


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1999 Passat V6


The previous post is untrue! MFA means MultiFunktions Ansiege (pronounced AAN-zeeguh).
This is a German- Americanism for Multi-Function Indicator.

The MFA displays the time, time driven since the ignition was started, miles driven since the ignition was started (trip miles are displayed under the odometer), miles per gallon, average miles per gallon, and outside temperature. I think that's it. If you click the little button on the underside the wiper switch, you can toggle between 2 different trackings. If you HOLD that button, you can re-set the avg. mpg's (but not the current mpg's, they are calculated every 30 yards), time driven, miles driven. Contrary to the previous poster's solution, it does not actually indicate anything is wrong with your car! (but they were right about scrolling through the indications with the side rocker switch) the malfunction indicator is on the cluster, it is a little engine block with a lightning bolt through it. It usually means you need an oil change. If it blinks, you have a catalytic converter problem. Hope this helps.

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Gas consumption


My Answer:

Poor gas mileage can be a result of many many things.

First of all you need to find out what is the factory normal gas mileage for your model year Jeep SUV. It should have said on your window sticker if you bought it brand new. If you are a 2nd or 3rd owner then a Jeep dealer would have info. Google search will tell you as well, and only takes a couple minutes to find.

I did a quick Google search and for a 2003 Jeep Grand Cherokee with a (4.7L V8 engine) the average mileage is roughly 14 mpg.

Not sure what engine you have as to options, etc?

How you drive will greatly change that number up or down depending on a number of driving and driver variables.

A few being -

Driving habits?

Tire pressures?

Engine tuned up?

Lube & oil/filter changes (every 5,000-7,500 miles? Air filter changes (every 10,000-15,000 miles)? Read your auto manual for exact recommended intervals.

How many people in the SUV on average?

Are you towing anything?

Type gas you are burning - BRAND? (See injectors below)

Area you are driving in (hills and valleys verses flat out,
etc)

Jeeps in general don't have a good track record for great mileage, and rough engine idling is always a clue that your fuel injectors are dirty. Typical on all Jeeps with port fuel injection systems! On Jeeps with dirty fuel injectors your mileage will go way down accordingly. If your not putting at least a 12 oz bottle of say Walmart brand Super Tech Fuel Injector Cleaner (~ $1 each) in your gas tank religiously every logged 1000 miles, or every 2 tank fill ups, then you are just inviting dirty fuel injectors and POOR fuel economy!

My 1993 Ford XPLR with a 4L V-6 engine (and ~ 160,000 flawless driven miles) gets roughly 22 miles per gallon on the highway with cruise control on, and about 17 around town on average. I religiously put a 12 oz bottle of the above injector cleaner in my gas tank every 1000 miles!! Of course I do all my own tune-ups, general repairs, and suspension maintenance (shocks, O2 sensors, trans oil changes, lube & oil/filter changes, code reading and clearing, etc) myself and it shows! I don't trust repair shops except for say Tires and Balancing at SEARS.

Hope that helps ease your mind about gas mileage as it relates to your Jeep there.

Frank


Aug 01, 2008 | 2003 Jeep Grand Cherokee

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