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#1
11-11-2009, 07:06 AM
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Code PO401 EGR insufficent flow detected
Have replaced EGR vacuum regulator, verfied that EGR valve holds vacuum, opens and shuts, good vacuum @ the regulator, have voltage @regulator. What am I missing?
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#2
11-11-2009, 07:21 AM
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Re: Code PO401 EGR insufficent flow detected
Either the DPFE or carbon built up under the EGR valve in the passages.
__________________
Being way2old is why I need help from younger minds The sooner you fall behind the more time you'll have to catch up.  HEY Y'ALL--READ THIS Here are some of our old vehicles for sale. 
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#3
11-11-2009, 07:39 AM
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Re: Code PO401 EGR insufficent flow detected
EGE tube clear in both lines to the DPFE and to the EGR valve. On the DPFE I am showing 5.0 volts on the sig and ref of the harness even when the truck is cold.
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#4
11-11-2009, 08:02 PM
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Re: Code PO401 EGR insufficent flow detected
DPFE sensor is bad and is a part stocked by most parts stores knowing they are big problem.
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#6
11-14-2009, 09:10 PM
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Re: Code PO401 EGR insufficent flow detected
Quote:
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"Saving the World......One Ford Truck at a Time!"
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#7
11-15-2009, 05:29 AM
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Re: Code PO401 EGR insufficent flow detected
Turn out to be carbon between egr and throttle body. For which I removed all and cleaned throughly with brake clean and replaced throttle body to intake gasket. Thanks for all the advice.
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#8
11-15-2009, 07:33 PM
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Re: Code PO401 EGR insufficent flow detected
Glad you gort it fixed. Thanks for the fix reply.
__________________
Being way2old is why I need help from younger minds The sooner you fall behind the more time you'll have to catch up. HEY Y'ALL--READ THIS Here are some of our old vehicles for sale.
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