Question about 2003 Jeep Grand Cherokee

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What does the 2003 cherokee jeep needs for tune up.. I have 94,000 mileage on it..

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Spark plugs, new spark plug wires, fuel filter, air filter those are the critical parts. suggest that if you change the fuel filter yourself to get a chilton's auto repair manual for detailed information on the procedures

Posted on Apr 23, 2010

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Jeep grand Cherokee tune up instructions for a 2002 4.0 6 cyl. Where can I get tune up instructions?


what are you asking,
the simple list in the operators guide, Lost that?
or how to do each step, that is only covered in jeep FSM
there are many SERVICE points, and based on MILEAGE.
is this the 60,000 mile tuneup? you never said.
or multiple there of?
this tune up is spark parts, filters.
and inspections. even brakes.

id say read a book first like this.


http://www.dummies.com/how-to/content/how-to-tell-whether-your-vehicle-needs-a-tuneup.html

Dec 13, 2015 | Jeep Grand Cherokee Cars & Trucks

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How to reset service miles


In the overhead display click through until you get to where it shows the service mileage readout then hold your reset button until it beeps and you'll see it reset.

Jan 31, 2015 | 2003 Jeep Grand Cherokee

1 Answer

Why is my jeep cherokee only getting 5mpg


You should look for a serious intake air restriction, the last time my fuel mileage was that bad a mouse had made it's home n my air cleaner.
Then you should probably give it a tune up.

Apr 19, 2012 | 1993 Jeep Grand Cherokee

1 Answer

How do I read service code for a 2003 Jeep Grand Cherokee V8, for example when the check engine light comes on?


if you have a led mileage meter turn key on and off 3 times the codes will read out on you display

Aug 03, 2010 | 2003 Jeep Grand Cherokee

1 Answer

Poor gas mileage after tune up


change the air charge sensor on the back of the intake

Jan 19, 2010 | 1994 Jeep Grand Cherokee

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Vibration while accelerating from 30 to 45 mph Jeep GrandCherokee


Not a tune up problem,
You need to have all U-joints checked out,They will give you the vibrations only while acceleration

Dec 04, 2009 | 2003 Jeep Grand Cherokee

1 Answer

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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