04 4.0 EGR Diagram
#1
#2
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EGR valve has vacuum hose to EGR Modulator(computer controls this to send vacuum to EGR Valve)
EGR Modulator has another vacuum hose to intake manifold
That is it, just those 2 hoses in the vacuum part of the system.
I did do a more detailed response to your question over at TheRangerStation(TRS)
EGR Modulator has another vacuum hose to intake manifold
That is it, just those 2 hoses in the vacuum part of the system.
I did do a more detailed response to your question over at TheRangerStation(TRS)
#3
I know this is a late reply but most of the time it is the DPFE. It has two vacuum hoses and one electrial plug with three prongs on the inside. One of the vacuum lines is larger than the other. I chased this problem also and ended up replacing the EGR, the egr solenoid, and finally the DPFE.
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