Has the EGR been replaced? The connectors checked for problems?
May, 22, 2012 AT 5:24 PM
No, the EGR has not been replaced. Can you supply wiring diagram for the EGR connector? Thanks
May, 22, 2012 AT 11:40 PM
If the replacement of the valve did not correct your condition, then you need to have the
computer(pcm) re-programmed with a software update. The update fixes a pintle position
problem that the pcm expects to see, but does not.
Or the EGR passage is plugged with carbon and needs to be cleaned.
May, 24, 2012 AT 12:10 AM
I just talked to the driver and he said that the security light was on around the time it was not idleing at all.
I dont think EGR would cause this unless it stuck open.
July, 24, 2012 AT 4:16 AM
The security light tells me it's probably an ECM issue.
Have you scanned it for 'soft' codes, the ones that don't show up during a normal code scan?
Our reference shows it to be an EGR closed error. You'll need to use a good scan tool and verify the EGR position.