At the top of the engine. The intake needs to be removed to access the plugs on the drivers side. Since there are no spark plug wires, the coil packs need to be removed. The plugs can then be removed and replaced with new ones. See the link below for detailed instructions.
Beneath their coils.
They are under the coils.They are under the coils.
The alarm system on your Jeep Grand Cherokee is controlled by a small, approximately 3 inch square box that plugs into wiring under your dash on probably the drives side towards the middle. It is black in color and is printed with the words "alarm module. If you unplug that the alarm system will be permanently disabled and starting issues may be resolved as well.
Yes.
I own a 2006 3.7L grand Cherokee and my tune up consists of spark pug replacements (6) for me, differential fluid change, ATF fluid change (no flush), and PCV. If you have a transfer case you will need to change that as well. good luck!
Cheap ones run for $2. Premium Bosch plugs run for about $6 a piece.
are the spark plugs old they may have to be changed
No.
Dirty spark plugs can occur on any make, model, or year. Changing the spark plugs should be done for maintenance, such as when you do a tune up.
Pass side front to back 2-4-6-8 driver side 1-3-5-7
bad plugs
Beneath their coils.
Depending on your year of Cherokee, I know the 1991 and newer Cherokees use Champion RC12LYC, Autolite 985, and Denso QJ16HR-U with the 4.0L 6 cylinder engine. On my 2000 Jeep Grand Cherokee Limited with a 4.7L V8, I used Champion Copper Plus RC12MCC4. These are the plugs that the manufacturer calls for. No other plugs should be used. (If you don't believe me, search the internet) Learn how to change the spark plugs on a 4.7L V8 (SEE LINK BELOW).
There are three on the left, three on the right, and two on the rear.
They are under the coils, next to the fuel injectors.
One great site I've found has been www.wjjeep.com Your question is answered here. http://www.wjjeeps.com/service/sparkplugs.htm Good luck!! CJ
it is a diagram of the engine?