46RE Transmission Problems – Durability, Issues, and Ways to Fix

The 46RE transmission is a four-speed automatic transmission used in many late-model Chrysler and Dodge vehicles. It is an evolution of the earlier A500/40RH/42RH transmissions and shares much of its design with those units. The 46RE was introduced in 1993 and was used in both two-wheel drive and four-wheel drive applications until 2007. It is similar to the 42RE/42RH transmissions but has a lockup torque converter and an electronic governor.

46RE transmission highlights

• Average lifespan:250,000-280,000 miles
• Reliability Score:High
• Prone to minor issues:Seldom
• Price for repair after failure:$1,000-$1,800
• Price for replacement:$3,800-$5,000
• Availability of parts:Good
• Common problems: Friction plates wearing out, torque converter issues, wiring problems.

The transmission system was used in a variety of popular vehicles, including the Dodge Ram 1500 and 2500, as well as the Jeep Grand Cherokee. This transmission was also used in the Dodge Dakota and Durango, as well as the Chrysler Aspen and Chevrolet Trailblazer.

The 46RE uses three planetary gear sets, a torque converter with a lockup clutch, and electronic controls. The transmission is fully automatic, with the driver able to select between two modes: economy and performance.

In economy mode, the transmission shifts earlier and more softly to maximize fuel efficiency. In performance mode, the transmission shifts later and more aggressively for better acceleration.

Durability

The 46RE transmission is generally reliable, and it can last decades with proper maintenance and care. It's for that reason that many people are still using it.

We know a lot of Dodge Ram owners who are still utilizing the same transmission even after accruing a mileage of more than 150,000. Others even claim that it can last up to 300,000 miles.

Problems

Like any complex piece of machinery, the 46RE transmission is not perfect and has its own share of problems. The common issues that users mostly complain about include:

• Fluid leaks
• Transmission Slippage
• Premature Wear
• Overheating
• Faulty Clutch
• Fuel Economy Problem

Solutions

Here are quick ways on how to diagnose the root of the problem coupled with ways on how to fix your transmission if you are experiencing one or a combination of the said problems.

1. Fluid Leaks

If you are noticing fluid leaks coming from your 46RE transmission, there are a few potential causes that you will have to inspect. In most cases, a fluid leak can be fixed relatively easily with some simple maintenance.

One common cause of fluid leaks is a loose or damaged transmission pan gasket. If your gasket is damaged, it already needs to be replaced. If it is simply loose, you can try tightening the bolts that hold it in place.

Another potential cause of the fluid leak is a faulty transmission cooler line. These lines can become damaged over time, which can cause them to leak. If they look worn out, you will have to replace them.

2. Transmission Slippage

One common issue that can occur with the 46RE transmission is slippage. This can be a result of many different factors, but often, it is simply due to the wear and tear on the transmission itself. There are a few different ways that you can attempt to fix this issue yourself.

One way to attempt to fix transmission slippage is by checking the fluid level. If the fluid is low, it can cause the transmission to slip. Consult your vehicle's owner's manual in order to find out where the dipstick is located and how to correctly check the fluid level. Once you have checked the fluid level, add more if it is low.

Another way to fix transmission slippage is by adjusting the bands. The bands help to keep the transmission in the proper gear and can become loose over time. Again, you will need to consult your owner's manual to find out where the adjustment screws are located and how to properly adjust the bands.

3. Premature Wear

When you're noticing premature wear in your 46RE transmission, there are a few things you can do to fix the problem. First, check the fluid level and its condition. If it's low or dirty, topping it off or changing it may help. You may also want to check for any leaks and repair them if necessary. Additionally, adjusting the transmission's shift points can often help with premature wear. If the issues persist, it may be time to rebuild or replace your transmission using a 46RE-compatible transmission kit.

4. Overheating

Overheating can cause a variety of problems with the 46RE, including loss of power, shifting problems, and even complete failure. Overheating can be caused by a variety of factors, including low fluid levels, old or dirty fluid, excessive towing, or even incorrect shift patterns.

Initially, make sure that the transmission fluid level is correct and that the fluid is clean and fresh. If the fluid level is just low, simply add more until it gets to the right level.

If the transmission fluid appears dirty, drain and replace it with fresh, clean fluid. Finally, take the vehicle for a test drive to make sure that the transmission is shifting properly and that there are no other problems.

If the 46RE transmission does overheat, it is important to take care of the problem immediately. Allowing the transmission to continue operating while overheated can cause serious damage and may even lead to complete failure.

5. Faulty Clutch

The 46RE has a torque converter clutch (TCC) that locks the converter when the vehicle reaches a certain speed. This increases fuel efficiency by reducing the amount of work the engine has to do. However, many 46RE transmissions have a problem with the TCC locking up too early or not at all. This can cause the engine to stall or run roughly, and can also cause the transmission to slip or not shift properly.

There are several possible causes for this problem. One is a faulty TCC solenoid. This solenoid controls the pressure that is applied to the TCC, and if it is not working correctly, it can cause the TCC to lock up too early or not at all. Another possible cause is a bad torque converter. If the converter is not functioning properly, it can cause the same problems as a faulty TCC solenoid.

The best way to fix this problem is to replace the faulty part with a new one. In most cases, this will be the TCC solenoid or the torque converter. However, if neither of these parts is available, you may be able to have the transmission rebuilt. This will usually involve replacing all of the clutches and bearings in the transmission, as well as the TCC solenoid and torque converter.

6. Fuel Economy Problem

The 46RE has a fuel economy problem that can cause it to lose power and efficiency. This problem is caused by the transmission's inability to downshift properly. When the transmission does not downshift correctly, it causes the engine to rev too high and use more fuel.

There are several ways to fix this problem. One way is to have the transmission inspected and serviced by a qualified mechanic. Another way is to install a performance chip that will correct the downshift issue.

Installing a performance chip is the most effective way to fix the 46RE-related fuel economy problem. These chips are designed to optimize the transmission's shifting patterns. This will ensure that the transmission shifts correctly and doesn't cause the engine to rev too high.

If you install a performance chip, you will see an immediate improvement in your vehicle's fuel economy. You may also notice an increase in power and efficiency. Installing a performance chip is the best way to fix the 46RE fuel economy problem.

Conclusion

By knowing where to find the root cause of the problem and understanding the immediate course of action that you can take, you can help keep your transmission's health and save yourself some money from costly repairs. If any of the said solutions don't work for you, then, it might be time to bring your auto to a skilled, trusted, and professional mechanic.

Even if you are not experiencing the aforementioned problems, it is still important to be aware of these potential issues. That's so you can fix them if they end up manifesting.

Remember to exercise care and caution when operating your transmission. As they say, "Prevention is (always) better than cure." Therefore, if you don't want to trouble yourself with the mentioned problems, keep in mind that there are a few things that can help extend the life of your 46RE transmission.

• First, regular maintenance is important. This includes things like changing the fluid and filter regularly.
• Second, avoid towing heavy loads with your vehicle. This can put extra strain on the transmission and cause it to fail prematurely.
• Finally, be careful when shifting gears. Harsh shifting can also damage the transmission.

Taking care of your 46RE transmission will reward you with many years of trouble-free service. Doing so will help keep your 46RE running smoothly for the duration of its remaining life.