nsbsalt

Last week my CEL threw me a insufficient flow on EGR so I took it off and cleaned it till it was shiny the plunger was not ripped and blowing in the vacuum hole would shut it and sucking would open it. Now it threw another code of P1491 and said Auxiliary Manufacture Emission Control. Is my EGR just done with or is it something else?

skyyskyy

Clean your egr ports, lots of threads on it.

Kronn 98SH

What were your search parameters? This has been covered hundreds of times.

__________________
1988 Prelude S - victim of an 80mph backflip
1991 Prelude Si - sold
1989 Accord DX - impounded
1998 Prelude SH - totaled on 3/29/12
2006 CRF150F - sold
2006 YZ250F - sold

nsbsalt

EGR valve, Clean EGR and Auxiliary Manufacture Emission Control

Kronn 98SH

Well that would be why. Here's a clue:

When you have a very specific problem, with its own specific code, try searching by the code. (P1491)

__________________
1988 Prelude S - victim of an 80mph backflip
1991 Prelude Si - sold
1989 Accord DX - impounded
1998 Prelude SH - totaled on 3/29/12
2006 CRF150F - sold
2006 YZ250F - sold

rburns4

I cleaned my egr ports. There is a SB out by Honda that clearly instructs how to do it. just google Honda Service bulletins egr ports.