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My Grand Cherokee 5.2 engine runs ruff. Some of the problem the engine surges, it losses power and then pick back up again, check engine light comes on, I had it at the dealer three times, they did a tune up, replace the 02 senor and instructed me to get another ECU in which I did. That did not correct the problem, I did get the ECU from a ...

When I have my lights on, and my car is in park my left brake light is on but not my right light. When I press on the brake, the right light is on and the left is off. I know it's not the bulb. I checked the towing connection and the fuse and its not those either, how can I try to fix this?

1991 Cherokee Laredo, 6 cylinder, 4.0 L. 82.000 miles suddenly activated "Maintenance Required" light on the instrument panel as I was driving down the interstate. This is not the "Check Engine" light and I've never seen this alert displayed before. Checked all fluids and noticed nothing unusual about  the engine ...