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Why does 2004 Jeep transmission slip?

A 2004 Jeep transmission slipping can have several causes, and pinpointing the exact reason requires diagnosis. Here are some of the most common culprits:

* Low Transmission Fluid: This is the most common and easiest to check. Low fluid level reduces lubrication and pressure, causing slippage. Check the fluid level with the engine running and at the correct operating temperature (consult your owner's manual). Low fluid can also indicate a leak somewhere in the system.

* Contaminated Transmission Fluid: Dirty or burnt transmission fluid loses its lubricating properties and can cause the clutch packs to slip. The fluid should be clear red; if it's dark brown or smells burnt, it needs to be changed.

* Worn Clutch Packs: The clutch packs inside the transmission engage and disengage to change gears. Over time, these wear down and can no longer provide sufficient grip, leading to slippage. This is a more serious issue requiring a rebuild or replacement.

* Worn or Damaged Valve Body: The valve body controls fluid flow throughout the transmission. Worn or damaged valves can cause incorrect fluid pressure, leading to slippage.

* Solenoid Problems: Solenoids are electromagnets that control the valve body. Faulty solenoids can prevent proper shifting and cause slippage.

* Torque Converter Issues: The torque converter is responsible for transferring power from the engine to the transmission. A faulty torque converter can cause slippage, especially during acceleration.

* Internal Transmission Damage: This could be due to a variety of factors, including previous abuse, lack of maintenance, or a manufacturing defect. Internal damage often requires a complete transmission rebuild or replacement.

* Incorrect Transmission Fluid: Using the wrong type of transmission fluid can damage the transmission and cause slippage. Always use the fluid specified by Jeep for your vehicle's transmission.

What to do:

1. Check the transmission fluid level and condition. This is the first and easiest step.

2. If the fluid is low or dirty, have it changed and the pan inspected for debris. A professional transmission service is recommended.

3. If the problem persists, a professional diagnosis is necessary. A mechanic can perform tests to identify the specific cause of the slippage.

Ignoring a slipping transmission can lead to significant damage and costly repairs. Addressing the issue promptly is crucial.