Cars Automatic Transmission is Hard to Shift

Causes

1. Low transmission fluid: This is the most common cause of hard shifting. When the transmission fluid is low, it can’t properly lubricate the gears, which can make them difficult to shift.
2. Dirty transmission fluid: Over time, transmission fluid can become dirty and contaminated with metal shavings and other debris. This can clog the transmission filter and make it difficult for the gears to shift smoothly.
3. Worn transmission components: The gears, clutches, and other components in the transmission can wear out over time, which can make it difficult to shift. This is especially common in older transmissions.
4. Electrical problems: Electrical problems can also cause hard shifting. For example, a faulty shift solenoid can prevent the transmission from shifting properly.

Symptoms

• The transmission slips out of gear.
• The transmission hesitates when shifting.
• The transmission makes a grinding noise when shifting.
• The transmission overheats.

Diagnosis

To diagnose the cause of hard shifting, a mechanic will typically:

1. Check the transmission fluid level and condition.
2. Inspect the transmission filter for clogs.
3. Test the transmission solenoids.
4. Inspect the transmission gears for wear.

Treatment

The treatment for hard shifting will depend on the cause. In some cases, simply adding transmission fluid or replacing the filter can solve the problem. In other cases, more extensive repairs may be necessary, such as replacing the transmission gears or solenoids.

Prevention

There are a few things you can do to help prevent hard shifting:

1. Check the transmission fluid level and condition regularly. The transmission fluid should be checked every 30,000 miles or so, or more often if you drive in stop-and-go traffic or tow heavy loads.
2. Change the transmission fluid and filter every 60,000 miles or so. This will help to keep the transmission clean and free of debris.
3. Avoid driving in stop-and-go traffic or towing heavy loads. These conditions can put a lot of stress on the transmission, which can lead to hard shifting.

If you experience hard shifting, it’s important to have it checked out by a mechanic as soon as possible. Hard shifting can be a sign of a serious transmission problem, and if it’s not treated, it can lead to further damage and expensive repairs.