This is a discussion on Help!!!! within the General Help forums, part of the LSx Technical Help Section category; Alright... im getting P0405... EGR Voltage in circuit too low.. etc etc... Should I replace my EGR valve?? But i ...
01-12-2008, 01:06 AM #1
- Join Date
- Oct 2007
- Beaver Dam KY
79 T/A -91 Firebird
- 1998 Trans Am -Oynx Black
Alright... im getting
P0405... EGR Voltage in circuit too low.. etc etc... Should I replace my EGR valve??
But i have my cats removed and/or gutted and im getting p0420/p0430 due to no rear 02 sensor.. could the cats have something to do with the EGR system because I do know that in my truck and other vehicles when you remove the cat it throws egr codes due to not enough backpressure.
01-12-2008, 09:48 AM #2
get a tune,get it all removed(air,egr,rear sensors) and call it a day...
01-12-2008, 09:59 AM #3
I've had luck cleaning EGR valves in the past but not on my LS1. I pulled mine off a long time ago and placed it in the trash. Might try pulling it and cleaning the carbon around the pintle and that *may* cure your problems. My wife used to have a 94 blazer that I would pull and clean at least once a year.
01-12-2008, 10:01 AM #4
its a known fact that egr valves are bitch to clean
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