I know that pretty much everyone has already seen this question, but I can not for the life of me get the answer I need.
I'm getting P0401 (Insufficient Flow - ERG) on my 2001 Lincoln LS V6. I have done the following:
Replaced EGR Valve
Replaced DPFE Sensor
Replaced EGR Valve Gasket
Cleaned ports on Intake
Cleaned ports on Exhaust Manifold
Cleaned EGR Tube
Replaced hoses going from EGR Tube to DPFE Sensor
Checked vacuum hoses for suction - there is definitely suction
Run vacuum test on EGR valve - The engine stumbles with 10" of vacuum which tells me the flow seems to be okay
Basically what happens is I clear the code and it comes back on after 15-40 miles. No matter what, it comes back on. The only thing left for me to replace is the solenoid, but there seems to be plenty of suction coming through the vacuum hose (I also checked the vacuum hose and it is fine as well). There was a LOT of carbon completely blocking the port on the intake, but it has been completely cleaned. I have literally taken the entire system apart, replaced broken parts and cleaned the rest very thoroughly.
I am at my wits end with this stupid car and need any help that can be offered.
I'm getting P0401 (Insufficient Flow - ERG) on my 2001 Lincoln LS V6. I have done the following:
Replaced EGR Valve
Replaced DPFE Sensor
Replaced EGR Valve Gasket
Cleaned ports on Intake
Cleaned ports on Exhaust Manifold
Cleaned EGR Tube
Replaced hoses going from EGR Tube to DPFE Sensor
Checked vacuum hoses for suction - there is definitely suction
Run vacuum test on EGR valve - The engine stumbles with 10" of vacuum which tells me the flow seems to be okay
Basically what happens is I clear the code and it comes back on after 15-40 miles. No matter what, it comes back on. The only thing left for me to replace is the solenoid, but there seems to be plenty of suction coming through the vacuum hose (I also checked the vacuum hose and it is fine as well). There was a LOT of carbon completely blocking the port on the intake, but it has been completely cleaned. I have literally taken the entire system apart, replaced broken parts and cleaned the rest very thoroughly.
I am at my wits end with this stupid car and need any help that can be offered.