Scotty's A1 Transmission Service Center

Sacramento's best transmission service

What's going on with my Jeep Wrangler transmission?

The Jeep Wrangler has had many transmissions over the years. They featured a 3-speed automatic transmission from 1986 to 2006, with some changes along the way. They were lightweight and simple, and they did not feature an overdrive gear.

In 2003, the 4-speed RLE was introduced in some models. It was the automatic transmission of choice until 2012, when the 5-speed W5A580 was introduced.

The RLE is a four-speed automatic transmission with overdrive. It’s considered a medium-duty transmission perfect for highway driving. However, the gear ratio wasn’t optimized for off-road use.

The W5A580 is a Mercedes transmission. It was used in many high-performance cars over the years. It was first used in the Wrangler in 2012. It’s known for fast shifts and the ability to handle 600 lbs. of torque.

If you live in Sacramento and are having these problems with your Jeep Wrangler, bring it into our shop and let us determine exactly what's going on. We can get your transmission fixed and put you back on the road!

Delayed shifting is a common problem for the 42RE and the 42RE 4 speed. This usually occurs when shifting from first to third or third to fourth. Delayed shifting can be frustrating and affect the performance of your Wrangler. Typically, no engine warning light is associated with this issue.

There are a few potential causes. The first, and easiest to remedy, is low transmission fluid or a dirty transmission filter. A worn or stuck pressure solenoid can prevent the transmission from keeping proper fluid pressure, which will often affect shifting from first to third.

The problem can also be caused by a wiring or sensor failure. If the problem occurs only with fourth gear, the overdrive solenoid is likely the issue.

Torque Converter or Overdrive Problems occur in the 42RE and 42RE 4-speed transmission in 2000 and later Wrangler models.

The problem is usually intermittent, and it will often cause the “check engine” light to come on. The easiest way to determine the cause is to have it checked with a code reader.

A broken cover plate is common with these transmissions. It will trigger a P1740 code. There’s an upgrade kit available to repair this problem.

The other common cause is faulty sensors. Input/output and throttle body sensor failure will cause the torque converter clutch to not engage properly. If this is the case, we will need to replace the faulty sensor.

2845 Fulton Avenue, Sacramento, CA 95821

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