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New fuel pump, now P1404 code

1216 Views 4 Replies 2 Participants Last post by  steve
Got a weird problem. Just changed the fuel pump assembly and fuel filter in my 99 Astro, 1 day later I've got a P1404 code (EGR not closing). Could I have done something when I changed the fuel pump? or is something totally unrelated and just a freak coincidence? I see alot of posts about carbon in the EGR valves, does this apply to the 99's as well?
Thanks in advance
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What was the reason for changing the pump? Was the pump dead or was fuel pressure not right or something else?
I would clean the EGR valve out. Assuming that the fuel pump was faulty and your fuel pressure wasn't what it should have been, now the change in the air/fuel ratio could change the readings.
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