You’ve most likely already heard about the renowned EGR valve, the anti-pollution valve. It is not always appreciated by car owners because it tends to create more concerns than anything else… Indeed, according to the use you are going to make of your car, it can become clogged and cause you a lot of complications. If this is the situation, you are most likely concerned about how to clean the EGR valve of your Jeep Liberty ? Don’t be anxious, we’ve written this article to help you with this operation. To do so, we will first take a look at the role of the EGR valve, then what are the failures that the EGR valve of your Jeep Liberty can cause and finally the section that will most likely interest you the most, how to clean the EGR valve Jeep Liberty?


How to Clean your Jeep Liberty EGR Valve: Role and Operation

Purpose of the EGR valve

The EGR valve of your car has been integrated to diesel engines mainly to reduce pollution released by vehicles and to match EURO measures on Jeep Liberty . It will as a consequence influence the quality of exhaust gas output and get rid of toxic particles, mainly Nitrogen Oxide.

Operation of the EGR valve

Before we learn how to clean the EGR valve on your Jeep Liberty , we will have a look at how it functions. As described before, its task is to clean the exhaust gases, so it will be positioned at the engine outlet, thanks to a valve, it will be able to return the unburned exhaust gases to the engine for a second burn which will get rid of all unburned toxic particles. It will function mostly at low speed because at high speed the combustion is sufficient to burn all these gases.

How to clean your Jeep Liberty EGR valve: Identifying faults

The EGR valve, even though very useful to limit the pollution emissions of your Jeep Liberty , will regrettably tend to clog up because of soot/gas deposits that will build up in its mechanism, which will finally risk obstructing the operation of the valve, until totally blocking the engine motor, here are the signs of illness that a faulty EGR valve on your Jeep Liberty can cause:

  • Motor light on
  • Power loss
  • Technical assesment rejected
  • Black gases
  • Vehicle that grazes at low speed
  • Low RPM settings

How to clean your Jeep Liberty EGR valve: In practice

And now we’ll commence the section you are most interested in, how to clean the EGR valve of your car. Here are the two approaches that you can use.

Do it on your own

How to clean your Jeep Liberty EGR valve system: Without dismantle

Despite the fact this process is less effective, it is however possible to consider a “rough” cleaning of your EGR valve, in reality, you will only need to use fuel additives, equivalent to the products used to clean the injection. These particular solutions must be injected into the running engine, at the right operating temperature, diluted in about 20 litres of fuel and run the engine for 3 or 4 minutes in high rev to clean the EGR valve of your Jeep Liberty.

How to clean your car EGR valve: With disassembly

Here is the more effective process, which will require sufficient access to the EGR valve to carry out the process without help. If so, the process is fairly simple. You will need to disconnect the electromagnet from the EGR valve, remove the few screws that hold it in place, and remove it. Once these guidelines are accomplished, now comes the time for cleaning. To get this done, you will need to use a product such as solvent, petrol, oven cleaning product, which you will leave to act for ten minutes, then scrape off the rest using a scraper, finish cleaning with wire brush. If you want to go further, you can even clean the two canal on which it is connected which may be scorched, for this, use a scraper and a vacuum cleaner to avoid dropping deposits in the conduits. You will only have to reassemble it and you will have finished cleaning the EGR valve of your Jeep Liberty.

Have it done by a professional

If, your EGR valve is not reachable because of the series or the engine of your car and if removing it would cause too many complications (removing too many elements that hinder access for example), how to clean the EGR valve of your Jeep Liberty? In this instance, it would be better rather than launching yourself into an overly complex operation, you turn to an auto mechanic. He will be able to do the job more cleanly and will be able, if necessary, to change the valve if it is dead. The cost of cleaning according to the difficulty of access is between 70 and 300 €.

Remove the EGR valve of your Jeep Liberty

At last, some individuals make a more radical decision to limit the risk of a failed valve. Rather than cleaning the EGR valve of their Jeep Liberty, they just choose to block it in the closed position. This treatment will have the consequence of greatly increasing the pollution released by the car, of no longer complying with pollution criteria, of having an engine warning light permanently on and in the end risk fouling the engine. We strongly advise against making this choice. If you have other questions or want to learn more about your car, don’t hesitate to check out our dedicated page.

If you want more tutorials on the Jeep Liberty, go to our Jeep Liberty category.