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I connect up all the vacuum lines and I get a P0401...
I pull the vac line for the EVAP, reset the CEL, and P0104 goes away...
WTF?
I've been fighting that egr flow code all summer long. first it was a busted egr tube, then a bad sensor, so on, so on...basically rebuilt the whole egr system soup to nuts and still had the 0401. i was trying some things again this past week, forgot that i left the vac line for the EVAP system off and drove the truck 120miles city and highway last night and it ran like a raped ape. 60 miles to my destination, i remembered, hooked it back up, 5 miles later the CEL comes on. pulled over, yanked it, capped the port, cleared the CEL and went on my merry way back home with no incident.
how on earth does connecting the EVAP vac line throw an insufficient EGR flow code.
add to the validity of this; the butt dyno is telling me something when the CEL is gone, it runs considerably better, so i don't know what to think at this point.
I pull the vac line for the EVAP, reset the CEL, and P0104 goes away...
WTF?
I've been fighting that egr flow code all summer long. first it was a busted egr tube, then a bad sensor, so on, so on...basically rebuilt the whole egr system soup to nuts and still had the 0401. i was trying some things again this past week, forgot that i left the vac line for the EVAP system off and drove the truck 120miles city and highway last night and it ran like a raped ape. 60 miles to my destination, i remembered, hooked it back up, 5 miles later the CEL comes on. pulled over, yanked it, capped the port, cleared the CEL and went on my merry way back home with no incident.
how on earth does connecting the EVAP vac line throw an insufficient EGR flow code.
add to the validity of this; the butt dyno is telling me something when the CEL is gone, it runs considerably better, so i don't know what to think at this point.
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