my check engine light is on and when i hook it up to the computer it tells me p0401 EGR insufficient flow detected. im thinking its just bad carbon build up. would cleaning the hoses and a tune up get rid of this?

 

MEERLY A THOUGHT!

Im not sure about the mustang but on my sunfire the EGR stopped working correctly so I took it off and sprayed it with carb cleaner then worked the diaphram up and down till it moved smoothly.

 

i was thinking that too but according to the haynes book i got says not to cause it will damage the diaphragm.

 

if its a carbon buildup, go rip the sht out of the streets and blow it out lol