so about 5 months ago i replace the egr sensor and it solved the problem now it back up again. insufficient flow p0401. so how do solve this problem could i just clean out the egr ports itself. i did that on my honda clean out the ports and made them bigger. so how do i go by doing this. thks.

 

Did you replace the DPFE sensor? Did you use a new one or used one?

Remove the sensor and tap it in your palm, does water come out?

 

Also blow out & check for clogged tubes pipes to/from the EGR sensor & EGR tube back to the intake. The code basically says there is a restriction somewhere. That DPFE could also be the culprit. You should also have vacuum to the DPFE.

Heres some info: http://www.paladinmicro.com/PalMFrame00.htm?wks=obd
Searchable codes & fault corrective actions.

Heres info on the DPFE: http://www.tomco-inc.com/Catalog/dpfe%20sensors.pdf

Should be fixable.

 

i went to advanceautoparts and got the Sensor (Dpfe) 5 months ago. i'll check the tubes but right now the engine is hot and that egr valve is HOT!. i'll take out the sensor and see if water comes out. i'll get back soon and tell u guys.

 

i forgot the hoes frlom the pipe to the sensor what order are they suppose to be in >< lol

 

ok one of the tube that goes on top of the egr valve does not blow air blows very little tho

 

ok the hoes are clean..but i just took the sensor off and there was some water and black stuff that came out...guess carbon. so does that mean i have to replace the sensor?

 

i notice when i stop i hear like a fart type noise from my exhaust like a crack then when i take off another crack sometimes would this be the egr...thks for the help

 

Replace the sensor and start from there...

I dont be knowin about your "fart" but I doubt its the EGR. The EGR only opens under certain loads and RPMS, its not like an on-off thing either. It goes up by 10% intervals. The 2 hoses are not interchangable. There should be one with a small opening and one with a bigger opening. You should be able to see the difference in the DPFE nipples as well.

 

ok i guess i will replace the sensor i read up on the water thing on the net. they say to spray a computer solvent in there then to put it back in. so i put that maf cleaner in there got some black stuff out so tomorrow i will replace it. for like 30$ lol