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2004 Jeep Grand Cherokee P0750 and P0307 Fault Codes: Loss of Power and Rattling Exhaust

Model: 04 4.7 Jeep Grand Cherokee Fault Code: P0307 Posted: 2017-10-03 07:39

My 2004 Jeep Grand Cherokee has recently started experiencing significant power loss and sluggish acceleration during takeoff. The exhaust pipe appears burnt, and I hear a persistent rattling noise when stopped. I've received fault codes P0750 and P0307 from the OBD2 system. Can anyone advise on what these codes mean and what steps I should take to diagnose and fix the issue? Any help would be greatly appreciated.

Related fault codes
P0307P0750
Comments (4)
Anonymous 2017-10-03 07:54

Start with a FREE OBD2 scan—even if the check engine light is off. Most auto parts stores offer free diagnostic scans. Record the exact codes and post them here; community members can provide targeted advice based on your vehicle's specific model year and symptoms.

Anonymous 2017-10-03 07:57

The fault codes detected are P0750 and P0307.

Anonymous 2017-10-03 14:49

Ah, I missed that earlier—thank you for clarifying. You used a proper OBD2 scanner, not just the key-on-off trick? P0307 indicates a misfire in cylinder #7. This could be caused by faulty spark plugs, ignition coils, or fuel injectors. Could you describe the condition of cylinder #7's plug—wet, dry, black, tan? Also, what does your burnt exhaust look like (red, white, black)? P0750 relates to the Left-Right (LR) Solenoid Circuit in the transmission. This is a transmission solenoid fault. Could you describe how the transmission shifts—does it shift roughly, late, or with hesitation? Note: If replacing plugs, consider using Champion brand for reliability.

Anonymous 2017-10-03 23:26

Thank you for the detailed guidance—I will check both the spark plug and exhaust condition tomorrow and provide an update on my findings.