How to diagnose a stuck open EGR valve?
How to diagnose a stuck open EGR valve?
Turn the EGR valve over and visually check to see if the pintle is stuck open. Blow compressed air into the bore (that contains the pintle) and see if this air comes out the outlet. Air should no pass thru’ to the other side. Let’s take a look at what your test results mean: CASE 1: Air did not pass thru’.
Can a multimeter be used to test EGR?
The vehicle computer operates the valve instead of previous years EGR valves, which are operated by the engine vacuum. The procedure to test an electronic EGR is a bit different and requires a multimeter. If you notice your vehicle running poorly, stalling or having poor gas mileage, you should test the EGR.
What does high volts on EGR valve mean?
If you notice your vehicle running poorly, stalling or having poor gas mileage, you should test the EGR. High volts could mean there is a blockage somewhere within the EGR valve and no voltage could signal a problem with the valve and computer communication. Turn the vehicle off and remove the key from the ignition.
What happens when something goes wrong with the EGR system?
When something goes wrong with the EGR system, you usually see one of the following: Chunks of carbon blocking the EGR valve’s pintle from fully seating in its seat. Now, as you may already know, exhaust gas cannot recirculate back into the engine at engine idle.
Turn the EGR valve over and visually check to see if the pintle is stuck open. Blow compressed air into the bore (that contains the pintle) and see if this air comes out the outlet. Air should no pass thru’ to the other side. Let’s take a look at what your test results mean: CASE 1: Air did not pass thru’.
The vehicle computer operates the valve instead of previous years EGR valves, which are operated by the engine vacuum. The procedure to test an electronic EGR is a bit different and requires a multimeter. If you notice your vehicle running poorly, stalling or having poor gas mileage, you should test the EGR.
What are the fault codes for the EGR valve?
EGR valve fault codes that light up the check engine light (CEL) on your instrument cluster. P0401 EGR System Flow Insufficient. P0403 EGR Solenoid Circuit. P0404 EGR System Performance. P0405 EGR Pintle Position Circuit Low Voltage. P1404 EGR Valve Stuck Open. P1406 EGR Valve Pintle Position. Rough idle.
When something goes wrong with the EGR system, you usually see one of the following: Chunks of carbon blocking the EGR valve’s pintle from fully seating in its seat. Now, as you may already know, exhaust gas cannot recirculate back into the engine at engine idle.
