What's with the shaking of the Cherokee cold car and the hot car?

For the jitter of the Cherokee 7250 vehicle, I suggest you check the working condition of the engine to see if there are any missing cylinders or poor working conditions of each cylinder. Secondly, check the performance of high-voltage lines and spark plugs. The secondary voltage required for cold car is higher. When the warm air is turned on, it should be the fault of the blower or the sundries inside, so it is easy to judge. The air odor is caused by unclean warm air tanks and moldy internal sundries. It is recommended to clean and disinfect.