How do I test my EGR?
How to Test an Electric EGR Valve
- Turn the vehicle off and remove the key from the ignition.
- Open the hood and locate the EGR valve.
- Turn the multimeter on and set the dial to “Volts DC.” Attach the red lead wire to the EGR circuit labeled “C.” There are five circuits on the EGR and each is labeled A-E.
Can bad EGR cause hard starting?
If your EGR system becomes inoperative or just leaky, it could create problems with drivability, such as a rough idle, detonation, hard starting, stalling, and increased NOx or hydrocarbon emissions in your exhaust.
When to worry about an EGR valve problem?
If the initial reading is in spec but you have a trouble code for this system then it is possible that the system is not flowing when expected (EGR valve, EGR tube, DPFE hoses or control side issue), is flowing when it shouldn’t be (EGR valve or control side issue) or you may have an intermittent concern, possibly even with the DPFE sensor.
Why is there an EGR code on my Ford?
However, we often find EGR codes on Ford products caused by inexpensive plastic parts that falsely report position to the control module. Several technical service bulletins for a wide variety of different makes and models have documented different problems associated with the EGR valve system.
How often should you check your EGR system?
When it’s failing, the exhaust pipe will discharge more pollutants than the approved level. Most countries require a vehicle’s emission test every six months. Check the EGR system if your car fails the test. You already know that all problems occur due to two reasons – the EGR valve stuck open or it stuck closed.
How does the ECM know when EGR is flowing?
When EGR is flowing, the pressure will rise in the hose connected below the orifice and drop in the hose connected above it, thus the Engine Controller (ECM/PCM, etc.) can determine if EGR is flowing and how much.