There is no shortage of costly problems that can occur in today’s modern 4wd diesel engines, and regrettably, this includes vehicles that have been well maintained. Many drivers have heard horror stories about how expensive fuel injectors and EGR valves can be to replace. We can now add DPF charges to the list! Replacing a DPF can cost anywhere from $4000 to $8000, and sometimes even more, so it’s a significant expense…especially if the car is out of warranty!
How much does a diesel particulate filter cost to replace?
The cost of replacing a diesel particulate filter varies substantially based on the engine’s power and the vehicle’s make. In the UK, however, the average cost of a DPF replacement is between £1,000 and £2,000. The typical price range is between £750 and £3,000. The filter’s material costs account for the majority of the cost.
Is a diesel particulate filter expensive?
A new one from a car manufacturer can cost between £1,000 and £3,500, negating any cost advantages from driving a diesel.
The expense of replacing a DPF can exceed the value of a car as it ages, and older, higher-mileage cars are more likely to require a replacement DPF.
Other vendors of diesel particulate filters are now offering lower prices, but be cautious: they must still have the requisite Type Approval or they may not function properly, costing you extra in repairs.
Can you change a DPF filter yourself?
Your car’s Diesel Particulate Filter will resemble a muffler, but it will be located much closer to the engine, where it will be warmer. The engine’s heat helps the DPF heat up faster, allowing it to burn off the soot particles more quickly. If the DPF warning light comes on, you should first try to clear any blockages with a cleaner, as this is a considerably less expensive and inconvenient way to address the problem.
If this does not solve the problem, you may need to replace the DPF and install a new one. If you want to save money on replacement, you can buy a new Diesel Particulate Filter online or at a garage and install it yourself at home to save paying for installation. If you need to replace your DPF, follow this step-by-step guide.
How long will a diesel particulate filter last?
If properly maintained, a DPF can last up to 100,000 kilometers. If the automobile has over that mileage, you may have to pay a significant sum for a replacement, therefore always check the MoT and service records before purchasing a secondhand car. Otherwise, you risk having to pay for unexpected diesel repairs due to high mileage.
How do you clear a diesel particulate filter?
Diesel engines emit a lot of soot (particulate matter), which can irritate the lungs and increase the risk of cardiovascular disease.
Since 2009, modern diesel cars have been required to incorporate a Diesel Particulate Filter (DPF) in the exhaust system to prevent soot from entering the atmosphere.
The goal is to reduce particle emissions by 80%, however the technology isn’t without flaws, and our patrols are frequently called to cars with a blocked DPF.
A DPF must be drained on a regular basis to preserve performance.
When the exhaust temperature is high enough, on motorways or fast A-roads, this is normally done passively in a process known as’regeneration.’
- The ash cannot be removed until the DPF is removed from the vehicle and submitted to a specialist for cleaning, but a well maintained DPF should last far over 100,000 miles.
Because many automobiles don’t get enough use for passive regeneration to operate, automakers include ‘active’ regeneration, in which the engine control software detects that the filter is becoming clogged and injects additional gasoline into the engine to raise the exhaust temperature and initiate regeneration.
Active regeneration occurs every 300 miles or more, depending on how you drive, and takes 5 to 10 minutes to finish. However, if your journey is too short and the regeneration does not complete, this is a problem.
Don’t ignore a warning light
If a warning light indicates that the filter is blocked, you should be able to complete an active regeneration cycle and clear the warning light by driving at speeds of over 40 mph for 10 minutes or so.
If you ignore a DPF warning light and continue to drive in a sluggish, stop/start pattern, soot will build up in the filter, causing it to go into’restricted performance mode,’ which will protect your car from damage.
- They may have to replace the filter in extreme circumstances, which can cost up to £1000 plus labor.
In most circumstances, there is only a short period of time between the DPF becoming partially blocked and the requirement for manual regeneration.
The engine management light may illuminate if there’s a problem with the DPF or the differential pressure sensor, which informs your automobile about its health.
Is DPF cleaning worth it?
Yes, you may use Redex DPF Cleaner to both prevent and cure problems. If your vehicle has a DPF, it may become clogged, and DPF issues can be costly to repair. As you drive, soot accumulates in the filter, which must be burned out on a regular basis to avoid significant obstructions.
Can a blocked DPF damage the engine?
Driving with a blocked DPF can cause major damage to your engine / turbo, and it’s not rare to have to replace a turbo when the warning light is ignored for an extended period of time. After successful regeneration, the ash residue that remains cannot be removed and will eventually fill the filter.
How often do DPF filters need to be replaced?
“It is prohibited to tamper with, remove, or be complicit in the deletion of a truck’s DPF system, knowingly or unknowingly, according to Section 203 of the Clean Air Act. This indicates that not only the removal, but also the physical change of the DPF may result in legal consequences. It’s also against the law to hire a DPF removal service provider to perform this for you.”
They also note out the hefty fines that can be incurred if a filter is removed illegally: “DPF violations resulted in a $400,000 fine for a California carrier.”
While using a DPF filter isn’t required, it is required to comply with EPA rules when it comes to decreasing carbon emissions and other forms of air pollution generated by diesel exhaust. If a diesel engine has a DPF filter, it is that filter that is being used to minimize emissions and meet EPA criteria. The engine will fail the test if it is not installed, and toxic fumes will be discharged from the exhaust.
Thankfully, if a DPF filter is creating issues, it is unlikely that it needs to be replaced. It’s more likely that it merely needs to be cleaned.
How Often does a DPF Filter Need to be Cleaned?
A DPF filter should be cleaned every 200,000 kilometers (124,000 miles) on average. Any individual filter, on the other hand, may become clogged or blocked sooner, especially if the vehicle travels the highway less frequently than typical and spends more time traveling at lower speeds.
When your DPF filter becomes blocked, the orange warning light on your dashboard will illuminate. Other indicators include:
Why is the DPF Blocked? What is Preventing DPF Regeneration?
The most common cause of DPF filter blockage is a lack of passive regeneration, which burns off the soot trapped in the filter and uses it as fuel. Only at high speeds, such as on the motorway, can passive regeneration occur. The engine will not have enough opportunities to burn off the soot if the truck hasn’t been driven at high speeds frequently enough.
Even when the truck is used normally, the DPF filter will ultimately become clogged. If there is so much soot and particles clumped in the filter that it won’t entirely burn out, even at high temperatures, DPF regeneration is blocked. This occurs when the filter’s soot capacity reaches 85 percent or greater. When this happens, the gaseous exhaust is unable to pass. The DPF filter simply becomes a wall, rather than a wall with holes. Continuing to use the filter in this form without cleaning it may cause irreparable harm to the filter.
It’s critical to clean or replace the filter at this time if it’s damaged.
A. Liquid DPF Filters Cleaner
Liquid DPF cleaner is a chemical compound that is added to gasoline and reacts with soot particles to form a new compound. This novel chemical has a substantially lower temperature of combustion. Even though there is a lot of soot, the truck can burn off more of it through passive and active regeneration.
The cleaner makes it easier for the heat of internal combustion to burn the soot and strip the filter through the regular regeneration process, allowing exhaust to pass through the filter once more.
Cleaners differ in terms of environmental friendliness, chemical composition, cost, and the amount of fuel they can work with. In 2019, Doesn’t Delete DPF examines the benefits and drawbacks of three common liquid DPF cleaners.
B. Mechanical DPF Filters Cleaner
If regeneration isn’t working, even with cleaning fluid applied, there are mechanical DPF filter cleaning solutions to consider. Typically, this indicates that ash has accumulated in the filter and is unable to be burned during regeneration. High-pressure cleaning cabinets are another name for them.
Compressed air, ash containment, and pre-programmed cycles are used by mechanical DPF filter cleaners to target ash and heat, blast, or cut it away from the filter.
The Automotive Parts Remanufacturers Association studied the costs and benefits of mechanical DPF filter cleaners in a helpful whitepaper, concluding that they’re quite cost-effective, especially when compared to replacing a damaged filter.
Mechanic businesses, rather than individual truckers, typically own these mechanical DPF cleaners.
C. Manual DPF Filters Cleaning
Hand-cleaning a DPF filter is difficult and usually necessitates specific training. However, nowadays, anyone can learn anything on YouTube. Big Rig Fix, a YouTuber, teaches how to clean the DPF filter on a Freightliner Cascadia truck.
Then there’s a video by YouTuber Guddu Pappu that shows how to clean a DPF filter with soap, buckets, and water pressure. It’s a delicate procedure, but one that you can learn if you’re persistentand don’t mind the chance of damaging your DPF filter on your first attempt.
How to Replace the DPF Filter?
Cleaning a DPF filter can’t always save it; ash buildup, abuse, or an accident have all ruined it beyond repair. It’s time to replace a DPF filter if the orange warning light stays on after cleaning it, or if a mechanic tells a motorist that the filter is damaged.
We have a large range of replacement DPF filters at Mytee. Our DPFs are fresh new, never used or remanufactured. Despite the fact that they’re brand new and made in the United States, each DPF filter is inexpensive because we sell straight to you there’s no money wasted on an intermediary. The EPA provides a great, free instruction to help you install your new DPF filter.
A video on DPF filter replacement was also developed by the California Clean Air and Water Resources Board, which demonstrated each step of DPF filter installation.
Who Buys DPF Filters and Systems?
Even if a DPF filter is no longer functional, having to discard an expensive piece of equipment might be distressing. Fortunately, some organizations will purchase DPF filters that are defective or broken for the materials. Raw materials such as ceramic, cordite, and silicon carbide are in great demand. So throwing out a filter doesn’t have to be a complete waste of time. It’s feasible to sell a broken filter and use the proceeds to purchase a new one.
What are the signs of a blocked DPF?
If both passive and active regeneration fail, another light will illuminate on your dashboard, alerting you to the situation. In this instance, you may require our DPF cleaning services.
When it comes to a blocked filter, there are various short-term options, such as forced renewal or the use of chemical additives, but this will only remove the soot, not the ash. Rather than squandering money on a short-term fix, we recommend that you try our comprehensive DPF cleaning service, which effectively removes all soot and ash! With this cleaning service, we ensure that only the most advanced technology is used to clean your device so that it can function properly once more.
How long does it take to replace a DPF filter?
The DPF (Diesel Particulate Filter) indicator indicates that your vehicle’s DPF filter has not been regenerated (cleaned) and will need to be manually regenerated. If this service is recommended, it is best to get it done as soon as possible to minimize long-term and potentially costly filter damage (a replacement filter can cost up to £1,800).
Why does the DPF need regeneration / cleaning ?
Carbon particles are trapped in the DPF filter, which filters exhaust gases as they pass through. To restore full functionality, this filter, like any other, must be regenerated (cleaned). When the engine/emissions management system detects that the DPF has to be regenerated, the regeneration process is normally carried out by the automobile itself. However, diesel vehicles that are only utilized for short trips do not give the system the time to regenerate the DPF, resulting in a malfunction. On vehicles with display centers, this failure is indicated by the DPF / engine management fault indicator illuminating and/or a fault message.
What is DPF regeneration / cleaning ?
When a failure with the DPF filter occurs, manual regeneration is required, which is done in the workshop while the vehicle is being driven. We tell the car to start the DPF regeneration process using our service computer, and then we run the car at full load. During the regeneration process, enough heat must be generated for the regeneration to be successful.
Note: If a DPF malfunction is detected, automatic regeneration will nearly never finish, and continuing operation will destroy the DPF filter.
What if I don’t have the DPF Regenerated ?
When the Engine Management Fault / DPF Fault Indicator illuminates, it means the DPF has not been regenerated within the vehicle’s normal driving range and must be manually or statically regenerated.
If the regeneration is not finished at this time, the filter may be damaged beyond repair and will need to be replaced entirely. When a DPF reaches 90% capacity, or around 45 grams, it is no longer regenerable and must be replaced entirely.
A failing Diesel Particulate Filter can cost up to £1000 to replace, depending on the make and model of your car.
How long does the regeneration take?
The DPF regeneration cycle takes around an hour and a half (1 1/2 hours) to complete and can be done as part of a standard maintenance procedure.
Why you cannot manually regenerate the Diesel Particulate Filter yourself
If your diesel vehicle is primarily used for short journeys and the engine management light shines, it may be possible for the vehicle to enter regeneration mode by simply driving it for a long distance. However, this is not a good idea and rarely works because:
- You can’t always count on the vehicle to go into regeneration mode (we use our diagnostic equipment to tell the car to enter regeneration mode)
- To enable AND complete the regeneration cycle, you must generate significant engine load / heat.
- Unless the fault code is cleared, the fault indication will not turn off (and you may never know the DPF has been regenerated!)