Tiffany Haney
The 4R70W transmission filter is a popular topic of discussion among car enthusiasts, with some expressing concerns about the possibility of it falling off the valve body and into the pan. While some users have reported that their filters fell off, causing hard shifts, others have found that the filter sits on the pan and cannot completely fall off. To prevent the filter from falling off, some car owners have employed safety measures such as using a stainless steel non-corrosive strap or safety wire to secure the filter to the valve body. Others have suggested dropping the pan to ensure proper installation of the filter. The transmission fluid and filter are also points of interest, with some recommending a change while others advise against it to avoid potential problems.
| Characteristics | Values |
|---|---|
| Can the 4R70W filter fall off in the pan? | Yes, it can fall off. |
| What happens if the 4R70W filter falls off? | It can wear out the transmission pump, foam the oil, and damage the whole transmission. It can also cause hard shifts. |
| How to prevent the 4R70W filter from falling off? | Use a stainless steel non-corrosive strap and wrap it over the filter and under the valve body bolts. |
| How to fix the 4R70W filter if it falls off? | Drop the pan and install a new filter. |
| How often should the 4R70W filter be changed? | It is recommended to change the filter regularly to prevent damage and ensure optimal performance. |
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What You'll Learn
The 4R70W transmission filter can fall off if not installed properly
One common issue with the 4R70W transmission filter is that it may not be bolted in or secured properly. This can cause the filter to sag or fall out, leading to oil starvation and damage to the transmission. It is recommended to drop the pan and ensure that the filter is properly installed, with the rubber ring and seal in place, to prevent this issue.
Some users have reported that the filter can rest on the shallow part of the pan if it works itself loose, but this is rare as the running car creates a vacuum that keeps the filter in place. However, it is still important to ensure that the filter is properly secured to the valve body to prevent any issues.
To prevent the filter from falling out, some users have suggested using a stainless steel non-corrosive strap to wrap over the filter and under the valve body bolts. Others have suggested using safety wire to secure the filter "just in case". It is important to take precautions and ensure the filter is secure to avoid any damage to the transmission.
In addition to the filter falling out, there can be other issues with the 4R70W transmission. Some users have reported that the transmission can take longer than expected to decide on the gear when letting off the gas. It is recommended to drain the torque converter, drop the transmission pan, and change the filter in this case. However, changing the fluid late may cause more problems than it fixes, so it is important to weigh the options carefully.
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The pan can keep the filter from falling out completely
The 4R70W transmission filter is a snug fit against the valve body. However, some users have reported that the filter can fall off, leading to hard shifts. This can be due to the filter not being pushed in far enough or the clearances in the pan being such that the filter doesn't have room to fall downwards.
One user reported that their filter fell off after five minutes of test-fitting, and they were concerned about the filter floating around in the pan. Another user advised that the pan will keep the filter from completely disconnecting if it does fall off, but it is still important to ensure that the filter is installed properly.
Some users have shared tricks to keep the filter in place, such as using a stainless steel non-corrosive strap to wrap over the filter and under the valve body bolts. Others have suggested using safety wire to secure the filter to the valve body.
It is worth noting that the transmission pump sucking air can wear out the pump and damage the transmission. Therefore, it is important to ensure that the filter is properly secured and not left loose or floating in the pan.
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The o-ring may not be enough to keep the filter in place
The 4R70W transmission filter is a snug fit against the valve body, but some users have reported that it can fall off. This can cause hard shifts and damage to the transmission. While the O-ring is designed to hold the filter in place, some users have expressed concern that it may not be sufficient.
One user reported that their filter fell off after five minutes of test-fitting, likely due to the rubber ring from the old filter not being removed. Another user shared their experience of the filter working itself loose and resting on the shallow part of the pan, creating a vacuum that kept it in place. However, they acknowledged that the front of the filter could still fall down and lose its ability to draw fluid.
To address this issue, some users have recommended dropping the pan to ensure the filter is installed correctly. Others have suggested using safety wire to secure the filter to the valve body for added security. One user even employed a stainless steel non-corrosive strap wrapped over the filter and under the valve body bolts to ensure it stayed in place during hard launches.
While the O-ring may be adequate for most cases, taking these additional precautions can provide peace of mind and prevent potential damage to the transmission. It is always better to be safe than sorry when it comes to vehicle maintenance.
It is worth noting that some users have experienced successful outcomes with the 4R70W transmission filter. One user shared their experience of the filter enduring 60+ bottles of nitrous at a 150-shot and a full year of 550RWHP abuse without any mechanical issues. However, considering the potential consequences of a loose or detached filter, taking proactive measures to secure it is advisable.
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The transmission pump sucking air can damage the seal
The transmission pump is critical to keeping the transmission cool, lubricated, and working well. If the transmission pump fails, it can cause many problems. The pump is built into the front of the transmission and is driven by the torque converter when the engine is running. When the pump turns, it creates a vacuum that pulls fluid from the pan through the filter. This fluid is then pressurized and sent to passages inside the transmission.
The transmission pump sucking air can be a sign of a damaged O-Ring on the pump lid. The O-ring creates a watertight seal, and if it becomes worn out or damaged, it can allow air to enter the pump over time. This can lead to a loss of pressure and damage to the transmission. In some cases, a failing transmission pump will make a whining noise.
To prevent the transmission pump from sucking air, it is important to regularly inspect and maintain the pump and its components. This includes checking for any cracks in the pump housing, pipes, or fittings and sealing them with the appropriate sealant or epoxy if necessary. It is also important to inspect and clean the strainer basket inside the pump housing, as this can develop cracks or become misaligned, allowing air to enter the system.
In addition to regular maintenance, there are some precautions that can be taken to ensure the filter does not fall off and cause the transmission pump to suck air. Some people choose to use a stainless steel non-corrosive strap and wrap it over the filter and under the valve body bolts to secure the filter in place. Others prefer to use safety wire to secure the filter to the valve body as they do not trust the O-ring to hold the filter in place by itself.
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A loose filter can cause hard shifts and transmission damage
A loose transmission filter can cause significant issues, including hard shifts and even transmission damage. The transmission filter plays a critical role in trapping contaminants, such as dirt, debris, and metal shavings, to prevent them from entering the transmission system and causing damage. When the filter becomes loose, it can no longer effectively trap these contaminants, allowing them to circulate in the transmission fluid.
Contaminated transmission fluid can lead to a range of problems. One of the most common issues associated with a loose filter is abnormal shifting, including hard shifts. This occurs because the contaminated fluid affects the functioning of the control devices (clutches and bands) responsible for shifting gears. The vehicle may experience slipping, where the engine RPMs increase without a corresponding increase in vehicle speed.
Additionally, a loose filter can result in low fluid pressure due to the pump being starved of fluid. This can cause the pump to make whining noises, and the transmission may overheat due to a lack of proper lubrication. The contaminated fluid can also cause grinding, clunking, and rattling noises, indicating potential transmission damage.
In some cases, a loose filter may even lead to fluid leaks. If the transmission fluid is unable to flow properly due to a blocked or loose filter, it may force its way through the vent tube and leak out, creating a puddle beneath the vehicle. This can result in severe damage to the gear system over time.
To prevent these issues, it is essential to ensure that the transmission filter is securely fitted and regularly maintained according to the vehicle manufacturer's recommendations. A loose filter can cause significant damage to the transmission system, potentially requiring costly repairs or replacements. Therefore, any signs of a loose or clogged filter should be addressed promptly by a qualified professional.
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Frequently asked questions
Yes, it can fall off. However, this is rare as the car creates a vacuum of sorts when running, keeping the filter in place.
If the transmission pump is sucking air, it can wear out the pump, foam the oil, and damage the whole transmission.
If the filter has fallen off, you will experience hard shifts.
To prevent the filter from falling off, you can use a stainless steel non-corrosive strap and wrap it over the filter and under the valve body bolts. Alternatively, you can use safety wire to secure the filter to the valve body.
