Tx Emissions Failed, 3.1 V6 1991 could it be the EGR?
Thread Starter
Junior Member
Joined: Oct 2007
Posts: 3
Likes: 0
Tx Emissions Failed, 3.1 V6 1991 could it be the EGR?
HIGH SPEED EMISSIONS (25 mph)
Standar Current Reading
CO (%) 0.67 0.95
NOx (ppm) 848 1508
LOW SPEED EMISSIONS RESULTS (15mph)
HC (ppm) 124 157
CO(%) 0.69 1.36
NOx(ppm) 937 1352
O2 sensor?
egr valve?
I need help please!!!
emerrem@hotmail.com
Standar Current Reading
CO (%) 0.67 0.95
NOx (ppm) 848 1508
LOW SPEED EMISSIONS RESULTS (15mph)
HC (ppm) 124 157
CO(%) 0.69 1.36
NOx(ppm) 937 1352
O2 sensor?
egr valve?
I need help please!!!
emerrem@hotmail.com
Member
Joined: Nov 2006
Posts: 227
Likes: 0
From: unknown
Car: 1992 Firebird
Engine: 3.1L
Transmission: Auto
Axle/Gears: 3:23
Re: Tx Emissions Failed, 3.1 V6 1991 could it be the EGR?
Run some seafoam throught the PCV valve thats on driver side valve and pour the other half in the gas tank drive the car through a tank of gas and take it back to retest and let us know what happens. Sounds like theres a lot of Carbon build up. Thats the black stuff that makes the emmisions higher.
Member
Joined: Oct 2007
Posts: 133
Likes: 0
From: Hobart, Indiana
Car: Different Rides but 1991 Firebird
Engine: V6 3.1 in Bird
Re: Tx Emissions Failed, 3.1 V6 1991 could it be the EGR?
Run some seafoam throught the PCV valve thats on driver side valve and pour the other half in the gas tank drive the car through a tank of gas and take it back to retest and let us know what happens. Sounds like theres a lot of Carbon build up. Thats the black stuff that makes the emmisions higher.
Ive never tryed that. So remove the hose to the PCV and pour it into the drivers side valve cover or turn the hose upside down and pour it in that way. Would like to try this.
Banned
iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Tx Emissions Failed, 3.1 V6 1991 could it be the EGR?
You don't need a smog pump at all, to pass the test. Visually, you should fail, but it's more than likely they won't notice. Just leave the rump on, but pull the pulley. No empty bracket, no pulley missing a belt...
Just put on a new $50 cat. My cat was 1 year old, no smog pump, no AIR tube, and my #s were almost non-existent!
High Speed-2692rpm
HC 220-standard....4-my reading
CO% 1.20-standard ....0-my reading
Idle
HC 220-standard....16-my reading
CO% 1.20-standard ....0.01-my reading
Just put on a new $50 cat. My cat was 1 year old, no smog pump, no AIR tube, and my #s were almost non-existent!
High Speed-2692rpm
HC 220-standard....4-my reading
CO% 1.20-standard ....0-my reading
Idle
HC 220-standard....16-my reading
CO% 1.20-standard ....0.01-my reading
Thread
Thread Starter
Forum
Replies
Last Post
