HOW THE EGR VALVE, BYPASS VALVE & EGR COOLER WORK

This video explains how the complete exhaust gas recirculation system functions. The egr cooler helps to reduce exhaust gas temperatures before they are administered back into the combustion. The by-pass valve sends hot air to reduce condensation. The EGR Valve will only open when prompted by the ECU. This will help to cool the combustion chamber subsequently reducing the formation of Nitrogen oxides, Nitrogen dioxide or Nitrogen monoxide. The EGR position sensor is a Hall-effect sensor. The EGR Valve servo motor turns in both directions but some of them are closed by spring pressure. High temperatures in the combustion chamber can be a catalyst in the formation of oxides of nitrogen especially above 2000 degrees Celsius.

[@brightonmutonhodza8766]

Clear and loud especially on the function of the bypass valve and purpose of egr cooler

[@jamrozelectronicssolutions7232]

A big thank you

[@cameronmoffat1525]

Excellent description of operaton of the device. Thank you.

[@jamrozelectronicssolutions7232]

I appreciate you

[@davidscott4984]

Excellent video,very insightful.

[@jamrozelectronicssolutions7232]

You're welcome bro thank you

[@trevormansfield6740]

Excellent video again

[@jamrozelectronicssolutions7232]

Thanks again!

[@emmanuelguzura4769]

Loud and clear keep it up

[@jamrozelectronicssolutions7232]

Thank you

[@stevecansfield4648]

Good video, very interesting

[@jamrozelectronicssolutions7232]

Glad you enjoyed it

[@johnshaw8013]

Ive heard this entire air/exhaust circuit can be permanently closed and disabled by clamping a vacuum control hose.
Thia allegedly also stops inlets coking up.
Can you identify the pipe which would emable this?

[@jamrozelectronicssolutions7232]

Hi John
What are you trying to achieve John

[@bathanmark]

Hello, thank you for your video. I hope you can help me,i got this error code in BMW
290900 - Air system, Air to Egr mass flow, plausibility : measured air mass compared with calculated air mass too high. How do I diagnose it? What could be the cause?

[@jamrozelectronicssolutions7232]

My response is based on your comment. If the measured air mass is higher than recommended I want to believe that could be caused by an egr valve that is open constantly, if that is the case the engine will also be down on power. Let me if that is the case. Everytime the egr valve opens, the air mass meter should reduce it's readings to accommodate the extra air from the egr valve.

[@poly925]

hello @Jamroz , i took off the egr cooler and the valve is stuck, hardly moving when using the parrot plaier after i took it off .
A lot of cleaning, oil and wd 40, it s moving, but not by hand. Should i replace the entire egr cooler or there s a way to make it free again?
I had 4C9F and 4C9E saying the acuator is non fuctioning.

[@jamrozelectronicssolutions7232]

Sorry bro i had taken a break. i would change the whole thing because i might happen again. if carbon is the problem fitting a new one will work for a season. check if the turbo bearings are not allowing oil to go into the engine

[@mokahn5920]

does EGR COOLER cause water to mix with oil by any chance please let me know

[@jamrozelectronicssolutions7232]

If the oil is in the coolant overflow bottle only, the oil mix is caused by the oil cooler not egr cooler.

[@ivovelinov8083]

I have error P14A3 EGR exchanger bypass jammed open(hot side). The car is Peugeot 5008 1.6 HDI. What can I do?

[@jamrozelectronicssolutions7232]

Try cleaning the egr valve clear the code and take the car for a drive. The valve is stuck because of carbon. You can buy egr valve cleaner from motorfactors

[@harjindersingh-ce4ic]

Why there is by pass path for exhaust gases in egr cooler assembly.

[@jamrozelectronicssolutions7232]

The bypass gases are used during cold starting to reduce condensation