Changing spark plug wires on 2001 Jeep Grand cherokee

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Look in the Chilton manuals or ask your local parts dealer. Be sure the engine is cold when changing them.

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Spark plug location on 2012 jeep grand cherokee

Spark plug location on 2012 jeep grand cherokee

get plug wire tester at parts store and test plug and coil wires if there bad change them to also did you check plug gap?

Usually a bad crank sensor or a bad ecu computer.

Since you have already changed the plugs I would check the wires,have the camshaft position and knock sensors tested and then take a look at the injector system.I would take it to you local mechanic to test the sensors since there all tested differently.Also you could try changing the distributor cap and rotor they might have a crack.

On the 4.7 V8 engine, each individual spark plug is located under each ignition coil.
Prior to removing spark plug, spry compressed air around base of ignition coil at cylinder head. This well help prevent fireing material from combustion chmber.

Review your Service Manual for Jeep WJ Grand Cherokee.

Hope helped (remember rated this help) Good luck.

what year and make of vehicle and what size engine?

If you haven't changed the plugs or had the fuel system cleaned, now would be a good time to do it. The number 1 culprit for rough idles is dirty injectors or plugs. You can try an injector cleaner in a can (or bottle) for under $10 and see if it helps, and then work from there. If there isn't any improvement then if you are able to, check the plugs for any gunky buildup and if you find a bad plug, make sure you replace them all (or have them replaced) at the same time.

I own a 2004 jeep Grand Cherokee 4.7 V-8 It took me 3 1/2 hours to complete changing the spark plugs. First one must remove the cover from the air filter and to the carbuetor there are two bolts on each side of the cover over the engine then the driver side is easy to remove the boots on each plug the passenger side is pretty easy except for the last plug all the way on the back this one took me 1/2 to remove because there is lots of obstructions like the power steering line and the oil line and electrical cables.

They are on the heads, follow the plug wires.

Try changing your spark plugs and plug wires.