Why is the automatic transmission stuck in drive and shifter just moves freely on a 1997 Chevy Cavalier?

自由に動くシフターが施されたドライブに詰まった1997年のシボレーキャバリエオートマチックトランスミッションは、おそらくリンケージまたはトランスミッション自体が関与する深刻な問題を示しています。 これが最も可能性の高い原因です：

* Broken or Disconnected Shift Linkage: This is the most common and hopefully least expensive culprit. The linkage physically connects the shifter to the transmission. 壊れたケーブル、切断されたロッド、またはリンケージメカニズムの破損したコンポーネントは、シフターがトランスミッションのギアを適切に接続することを防ぎます。 Inspection of the linkage under the car is crucial.

* 内部伝送の問題： This is more serious and costly. Problems inside the transmission itself, such as:

* 低透過流体： Extremely low fluid can cause the transmission to malfunction and the shifter to become loose.すぐに液体レベルを確認してください。 it should be checked with the engine running and warmed up to operating temperature.低液は、アドレス指定が必要な漏れを示す場合があります。

* Damaged or Worn Internal Parts: Worn clutches, bands, or other internal components can lead to the transmission failing to respond to the shifter's commands. This often manifests as slipping, but it can also lead to the symptoms you describe.

* バルブ本体の問題： The valve body controls fluid flow within the transmission. Problems here can disrupt gear selection.

* Broken Shift Detent Cable: This cable holds the shifter in place. If broken, the shifter will move freely, but the transmission won't change gears.

* Park/Neutral Safety Switch Failure: This switch prevents the car from starting unless it's in Park or Neutral. A faulty switch could allow the shifter to move freely but might not actually be affecting the gear selection.

* Broken Shift Lever: 可能性は低いですが、破損したシフトレバー自体は、トランスミッションを関与せずに自由に移動できるようになります。

何をすべきか：

1。最初に安全： Do not attempt to drive the car. Towing is recommended.

2. Check Transmission Fluid: 透過流体のレベルと状態を確認してください。 If it's low, extremely dark, or smells burnt, it strongly suggests internal transmission problems.

3。目視検査： Look under the car to inspect the shift linkage for any visible damage, broken parts, or loose connections.

4。専門診断： This is not a DIY repair unless you have extensive automotive experience. Take the car to a qualified mechanic specializing in automatic transmissions. They'll need to diagnose the exact problem before recommending repairs. A proper diagnosis will save you time and money in the long run by preventing unnecessary repairs.

Ignoring this problem could lead to further damage and significantly higher repair costs. できるだけ早く専門家からチェックアウトしてください。