What should I do about my Volvo EGR problem?

So far the EGR boost sensor has been replaced, then the boost control valve, then the turbo boost governor, then a new EGR valve was put in. Again the emissions warning light is back on. The car seems to drive normally. Any suggestions on fixing the problem and not spending another load of cash. What year and what engine?

What causes an EGR valve to fail ukdieselparts blog?

The EGR system flow is excessive. This is caused by: The EGR valve mechanism is stuck open. The air filter is clogged or dirty. There are intake leaks. There could be a problem with the turbocharger. An incorrect vacuum hoses connection.

What are the symptoms of a broken EGR valve?

The main cause of EGR Valves breaking is due to them becoming blocked/clogged up or leaking. This in turn makes the car run poorly and of course causes pollution on the environment. Symptoms of a broken EGR Valve are as followed: Excessive black diesel smoke under load

What are the problems with the EGR boost sensor?

A new EGR boost sensor was put in. A few days later the warning light was back on and 2 fault codes were detected in the system. One was turbo overboosting (EGR flow too low) and secondly a suspected fault internal of the system control valve. Next the boost control valve was replaced.

How to know if the EGR valve in the 1994 Chevy is bad?

It’s important to check the EGR valve regularly to make sure that it is working properly and does not need to be replaced. Park the Chevy and let it sit for a half hour. This will ensure that the components are cool and prevent potential burns. Open the hood of the vehicle and locate the EGR valve.

What causes black smoke from the EGR valve?

2. Black Smoke from Exhaust. If the EGR valve stays open at all times and the exhaust fumes are being fed to the engine constantly, the engine gets deprived of oxygen. With too much fuel burning and less oxygen, a black smoke gets produced and escapes from the exhaust pipe especially when the car is idle.

What to do if your EGR valve is blocked?

When the EGR valve is blocked, error codes of P1404 and P1406 may display on the engine light area. Remove the plug and clean it using the valve cleaning kit to remove blockages.

Why does my engine stall when the EGR is open?

This is because the temperature is lower so fuel does not burn at the optimal temperature and as a result is less efficient. Stalling when the engine idles like a rough idle is usually caused when the EGR valve is permanently open and is constantly letting exhaust gases into the EGR system.

Where are the EGR valves on a Volvo D12?

If you change the fuel filters and inspect the turbo and the problem still exist I’m almost sure its your valves. To replace, first drain the coolant from system and disconnect the battery cables. The valves are located on the right side of engine attached to the exhaust manifold just above the turbo, there are two of them.

Why is the EGR valve on my Car always open?

If the valve is always open, too much gas will go to the engine and this can break many other things. Like with any engine component, an EGR valve fails eventually and sadly it is a common failure. The main cause of EGR Valves breaking is due to them becoming blocked/clogged up or leaking.

What are the symptoms of a bad EGR temperature sensor?

1. Engine ping or knock. One of the first symptoms commonly associated with a bad or failing EGR temperature sensor is engine ping or knock. If the EGR temperature sensor malfunctions it will cause issue with the EGR system flow. This can cause cylinder temperatures to rise, which can cause engine ping or knock.

Where is the EGR valve on ISX engine?

It depends on what year ISX you have, up to ’06 engine model (found in some ’07 model trucks too) it is buried behind and slightly in front of the turbo. ’07 and later engines it is on the driver’s side. Trucker217 Thanks this. EPA 2007 engines with CM871 really differ.

When do I need to replace the EGR valve?

The code is EGR Valve Position Circuit – Voltage below normal, or shorted to low source crosses to a cummins code 2272. The valve does need to be replaced if this code is triggered due to a failed position sensor.

Can a valve be replaced in an EGR system?

Newer vehicle models use electronic EGR systems that may include additional components, even a digital valve that eliminates the need for vacuum control altogether. A more radical design, implemented in a few models, was the replacement of the valve with EGR jets at the bottom of the intake manifold.

When to replace an exhaust gas recirculation ( EGR ) valve?

At this point the engine burns them again, so there are no emissions to worry about. Typically if your vehicle has been made in the last two decades, it is outfitted with an EGR valve. While there is no set mileage that it should be replaced, it is important to check that it is in good working order.

Can a faulty EGR valve cause your car to stall?

It may feel as though it is about to stall, it can stumble, and even shake. If you have tried to pass an emissions test recently, only to have your vehicle fail, that can be due to a faulty EGR valve. Once it is replaced, you should be able to pass the test. Your Check Engine Light may come on since the engine is not operating as it should.

How often should I Clean my EGR valve?

It is suggested that every 50,000 miles you have a carbon cleaning done, which is an air induction. This will clean out any carbons and sludge that is building in the air intake system and the engine. Once your EGR valve dies it will begin to affect your vehicle in a variety of ways, so it’s good to know what signs to watch out for.

Why is the exhaust gas recirculation valve so important?

With society being much more conscious about the environment and leaving as little footprint as possible, the exhaust gas recirculation (EGR) valve is more important than ever before. This little valve is responsible for single-handily bringing down the amount of exhaust emissions your car expels from the tailpipe into the atmosphere.

What happens if you have a broken EGR valve?

EGR valves are more commonly found in diesel engines these days and when fully functioning, they reduce emissions greatly. If you have a broken EGR Valve, you will want to make sure it is kept closed and not always open. If the valve is always open, too much gas will go to the engine and this can break many other things. Table of Contents [ show]

How to clean a blockage in an EGR battery?

You will need to clean the EGR valve of the blockage using the following steps: 1 Disconnect battery 2 Remove sensors or clips 3 Loosen bolts holding the EGR valve 4 Use a EGR or Carburetor Cleaner to spray the valve and hoses 5 Reconnect the battery

What’s the code for an EGR valve throw?

What code will an EGR valve throw have? The P0401 trouble code is related to your car’s exhaust gas recirculation (EGR) system, which controls an engine and reduces emissions. Suppose a computer-controlled valve gives a certain amount of gases back into your engine to be burnt with the air-fuel mixture.

What happens when you have a bad EGR valve?

The engine will have a rough idle when the EGR valve is faulty because it will remain in an open or closed position. This implies that too few or too many exhaust gases are entering the chamber, and this is why the engine is idling.

What can I use to clean an EGR valve?

This is a home experiment and an unbiased use of JLM Diesel Air Intake & EGR Cleaner. Similar products are available. This product is designed to dissolve carbon deposits, gum and varnish build up. It should restore air flow to the engine thus improving power and acceleration while reducing exhaust smoke.

Why does the fuel management light stay on when the EGR is open?

This means the amount of hydrocarbon gases emitted from the tailpipe increases significantly producing a fuel smell. Your engine management light may stay on once your car detects an issue with the EGR valve. This could be caused when the EGR is either constantly closed or open.

What are the different types of EGR valves?

This helps to ensure the car maintains fuel efficiency and emits fewer emissions. There are two types of EGR valves; a vacuum-operated and an electronically controlled EGR valve. A vacuum-operated EGR valve is usually only found in older vehicles. It is a straightforward system which utilises a vacuum to switch the EGR valve from closed to open.

What should I do about my Volvo EGR problem?