* Low Transmission Fluid: The most common and easiest-to-check issue. Low fluid level prevents proper lubrication and pressure, leading to slipping. Check your fluid level immediately – it should be checked with the engine running and the transmission at operating temperature. If low, add the correct type of ATF (Automatic Transmission Fluid) specified for your Concorde's transmission. However, *don't just add fluid* without addressing the underlying reason for the loss.
* Internal Transmission Problems: This is the more serious and likely culprit. Several components within the transmission could be failing:
* Worn Clutch Packs: These are sets of friction plates and steel plates that engage to transmit power. Wear causes slipping.
* Failing Valve Body: The valve body controls the fluid pressure and shifting. A faulty valve body can cause erratic shifting and slipping.
* Worn or Damaged Planetary Gearset: These gears handle the actual power transfer. Damage can lead to slipping or inability to shift properly.
* Low Transmission Filter: A clogged filter restricts fluid flow.
* Torque Converter Issues: The torque converter connects the engine to the transmission. A faulty torque converter could cause slipping. While less likely to cause the *specific* symptoms you describe, it's a possibility.
* Shift Solenoid Problems: These are electrical components controlling the shifting. A malfunctioning solenoid can cause incorrect shifting patterns.
What to Do:
1. Check the transmission fluid level and condition: If low, add the correct fluid, but only enough to bring it up to the recommended level. If the fluid is dark brown, burnt smelling, or has metal particles in it, this is a strong indicator of significant internal problems.
2. If the fluid is low or dirty, *do not drive the car extensively*. Driving with low fluid or damaged fluid will further damage the transmission.
3. Take your car to a qualified transmission specialist or mechanic. Diagnosing and repairing transmission problems requires specialized knowledge and tools. Attempting DIY repairs on a transmission is generally not recommended unless you have extensive experience. They can diagnose the exact problem and provide an accurate estimate for repair or replacement.
A simple fluid check is the first step, but given the symptoms, expect a significant repair cost, possibly exceeding the value of the car depending on its overall condition.
