* Torque Converter: The torque converter is the fluid coupling between the engine and transmission. If it's failing or slipping, it won't efficiently transfer engine power to the wheels, resulting in the engine revving without the car moving. This is a common issue in older vehicles.
* Transmission Solenoids/Valve Body: These are electrically controlled valves within the transmission that regulate fluid flow. A faulty solenoid or problem within the valve body can prevent the transmission from shifting into gear correctly.
* Transmission Fluid: Low or dirty transmission fluid can lead to poor performance and slipping. The fluid acts as a lubricant and hydraulic medium for the transmission's operation. Check the fluid level and condition. If it's dark, burnt, or low, it needs to be changed.
* Shift Cable (Less Likely): While less probable in an automatic transmission, a problem with the shift linkage or cable *could* interfere with gear selection, though this is less common than the other issues.
* Computer/Sensor Issues: A faulty sensor (e.g., speed sensor, transmission temperature sensor) or a problem with the transmission control module (TCM) can prevent the transmission from engaging correctly. This would require diagnostics with a scan tool.
What you should do:
1. Check the Transmission Fluid: This is the easiest and cheapest thing to check first. Look for the dipstick (often marked with "ATF" for Automatic Transmission Fluid), and check the fluid level and color.
2. Professional Diagnosis: Because of the complexity of automatic transmissions, taking your Avenger to a qualified mechanic or transmission specialist is highly recommended. They have the tools and expertise to diagnose the problem accurately and perform the necessary repairs. A scan tool can read transmission codes that will pinpoint the issue much faster than guesswork.
Ignoring this problem could lead to more extensive and costly damage to the transmission. Get it checked out soon.
