1993-1997 Chrysler Concorde, Dodge Intrepid & More: Solving 42LE Torque Converter Shudder

Symptoms of a Failing Torque Converter

A bad torque converter in these Chrysler, Dodge, and Eagle vehicles often gives distinct warnings. The most common complaint is a shudder or vibration that feels like driving over rumble strips. This typically happens at steady speeds, often between 30 and 50 mph, when the torque converter clutch (TCC) is trying to engage.

• Shuddering or Vibration: A noticeable shaking that feels like you're driving on a rough road, even when the pavement is smooth. This is the classic sign of a worn internal lock-up clutch.
• Transmission Slipping: The engine RPMs may flare up without a corresponding increase in speed, as if the transmission is momentarily in neutral. This can be caused by damaged fins or bearings inside the converter.
• Overheating Transmission: A failing torque converter can generate excessive heat due to internal slippage, which can trigger a warning light on your dashboard. This can damage the transmission fluid and internal seals.
• Unusual Noises: Whirring, whining, or rattling sounds that change with engine RPM can point to damaged bearings or fins inside the converter.
• Poor Acceleration: If the converter is not multiplying torque correctly from a stop, the vehicle may feel sluggish and slow to get moving.
• Check Engine Light: Fault codes related to the torque converter clutch circuit, such as P0740, P0741, or P0742, are a strong indicator of a problem.

Known Issues, TSBs, and Recalls

The Chrysler LH platform vehicles, which include the Concorde, Intrepid, Vision, LHS, and New Yorker, had several documented issues, though none point directly to a widespread torque converter recall. The 42LE (or A606) transmission itself was known to have problems.

• Transmission Shifting Issues: There are common complaints about shifting problems and noise in reverse for these models, which can sometimes be related to the torque converter or other internal transmission components.
• Torque Converter Clutch Shudder: While not a recall, TCC shudder is a widely documented problem for many Chrysler vehicles of this era. The issue often stems from the lock-up clutch material or contaminated fluid.
• No Major Recalls: Searches of the NHTSA database did not reveal any specific recalls for the torque converter on these 1993-1997 models. Recalls for this platform tended to focus on other issues like fuel rails or shifter interlocks.

Buying a Used Torque Converter: What to Check

Since replacing a torque converter is a labor-intensive job, choosing a quality used OEM part is critical to avoid doing the job twice. Here’s what to inspect before you buy.

1. Verify Compatibility: This is the most important step. Ensure the converter is from a vehicle with a 42LE (A606) transmission. The part numbers 04626644, 4626644, R4626644, R4626644AB, or R4626644AC confirm a match. Note that some parts vendors list different converters for 1991-1997 models versus later years, so matching the year range is also important.
2. Inspect the Hub: The hub is the machined snout that inserts into the transmission's fluid pump. Check it carefully for deep scratches, scoring, or gouges. A damaged hub will destroy the new pump seal, causing a major transmission fluid leak.
3. Check Mounting Pads: These are the four pads where the converter bolts to the engine's flexplate. Ensure the threaded holes are clean and not stripped. Any damage here makes the part unusable.
4. Look for Leaks or Damage: Inspect the entire body of the converter for cracks, dents, or signs of past fluid leaks from the seams. A blue or purple discoloration indicates extreme overheating, which means the internal components are likely damaged.
5. Shake the Converter: Gently shake the converter. A slight swishing sound from the fluid inside is normal. However, loud clanking or rattling noises suggest broken internal parts, and you should reject the part.
6. Mileage and Source Vehicle: Ask for the mileage of the donor vehicle. A converter from a lower-mileage car is always preferable. Also, confirm it came from a vehicle that was not involved in a severe front-end collision, which could have damaged the transmission and converter.

Replacement Difficulty and Cost

Replacing the torque converter on these front-wheel-drive vehicles is a difficult and time-consuming job.

• Difficulty: 5 out of 5.
• DIY Feasible: Not recommended for beginners. This job requires removing the entire transaxle from the vehicle, which involves disconnecting driveshafts, suspension components, and the engine subframe. It requires specialized tools, a vehicle lift, and significant mechanical experience.
• Estimated Time: A professional technician will typically take 5 to 10 hours to complete the replacement.

Cost Comparison

The high labor cost makes buying a reliable part the first time essential. Prices can vary based on supplier and condition.

Frequently Asked Questions (FAQ)