in your garage to make future searches easy.

Condition Value
expand_moreGeneral exhaust gas values
Diagnostic socket location The diagnostic socket is located on
the driver's side in the footwell
below the dashboard.
expand_moreIdling speed with manual gearbox
Jeep gasoline straight-6 4.0 L ERH 188 HP 620820 rpm
Minimum engine oil temperature at VET 158°F
expand_morePetrol exhaust gas values
CO content at idling speed 0.10.5 %
CO content at increased idling speed 0.3 %
Increased idling speed 25002800 rpm
Lambda sensor design Jump type lambda sensor
Lambda value 0.971.03 λ
Maximum HC content at idling 100 ppm
Test speed for lambda sensor signal 620820 rpm
Voltage swing at test speed 0.3 V
More than

To reduce environment impact and pass government inspections keep emission parameters at the level prescribed by Jeep.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2004 Jeep Grand Cherokee user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Jeep warranty policy for your region. In some regions DIY service may invalidate your warranty.

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Jeep Grand Cherokee service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2004 Jeep Grand Cherokee you're not only saving money, but also also improving your technical skills and learning something new.

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