| View single post by wh23g3g | |||||||||
| Posted: Sat Jul 20th, 2019 06:46 pm |
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wh23g3g Joined: Sun Mar 11th, 2018
Posts: 130
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I've replaced all items on the egr system less than a year ago. I checked voltage on the DPFE and removed the whole vacuum harness to inspect for holes or cracks. I've replaced the DPFE sensor and vacuum solenoid under warranty, both Ford parts. The DPFE hoses are not clogged, they are fairly new and in good shape. The valve itself is a Ford valve less than a year old. I removed it and cleaned up in the intake but it wasn't clogged. I replaced the valve gasket. The P0401 comes back every time after about 10-15 miles. It doesn't run any different. Today I just checked the egr valve with a vacuum pump. I pumped it up and nothing changed at all. I've got a warranty valve and a new pipe. I was thinking maybe the pipe was clogged but I can't get the bottom nut to break loose so I quit trying. When I tested the valve with a vacuum pump I did it right away the first start of the day and also after driving a 50 mile round trip. Nothing happened when I applied vacuum to the valve and it didn't leak down. What does that mean?
____________________ 1998 Ford Ranger XLT 2.5 4R44E Automatic 4.10 non-limited slip, 1993 Ford Ranger XLT 2.3 M5 Manual, 3.45 non-limited slip |
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