2005 Grand jeep 4.7 error code 301

SOURCE: Jeep Hesitates. P0303 code

Check the cylinders Commpression. over 115 psi is good, 120 psi is normal.

SOURCE: OBD 2 code showing 300 & 301 cylinder misfire

there are alot of components that can throw those codes.... as a test pull one wire from the coil pack and note if the engine idle changes... replace it and move to the next one... repeat that for all cyclinders.... if you pull one and there are no changes you have likely located the cause.

SOURCE: 2005 Jeep Grand Cherokee Limited, 5.7L V8, starter

Every morning at lunch time and evening my jeep won't start. It doesn't grind but the electrical goes crazy. After a couple of trys it finally starts. Help

SOURCE: Changing spark plug wires on 2001 Jeep Grand cherokee

yah direct ignition coil pack does away for the need a a distributer cap and rotor.much higher energy ignition system where the computer tell when to fire.if that helps.not hard to change.as long as you change them one at a time so you don't screw up the order.

SOURCE: i have a 99 grand am SE 2.4 4 cylinder and my

A misfire doesn't always have to be ignition... it's just the most common cause. Faulty or plugged injector, low compression. You need to check fuel pressure and test the fuel injector flow. Then check compression. If you don't have tools for these tests, take it to someone who does. Testing is much cheaper than throwing parts at the problem.