Failed CA smog please help
10-17-2017, 07:23 PM
#1
Failed CA smog please help
I went to smog the Iroc and failed I am not sure what I should troubleshoot any suggestions would be greatly appreciated.
Car Pecs:
1989 Iroc 5.7 w/rebuilt motor 30,000 miles ago.
New Parts on the car with less than 3,000 miles.
Spark Plug and Wires
Magnaflow CA Catalytic Converter
Recent Oil Change
195 Thermostat
]
Car Pecs:
1989 Iroc 5.7 w/rebuilt motor 30,000 miles ago.
New Parts on the car with less than 3,000 miles.
Spark Plug and Wires
Magnaflow CA Catalytic Converter
Recent Oil Change
195 Thermostat
]
Last edited by ARAMOS3; 10-18-2017 at 07:19 AM.
10-17-2017, 07:36 PM
#2
Senior Member
Re: Failed CA smog please help
What is your timing at? Also check your egr. The high NO levels suggests your egr isn't functioning properly.
10-17-2017, 08:59 PM
#4
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Car: '91 GTA, '92 T/A Convertible
Engine: GTA: 350 w/Vortec heads, T/A: 305
Transmission: Pro-built 700R4
Axle/Gears: GTA: 3.27, T/A: 2.73
Re: Failed CA smog please help
I would target the EGR valve.
10-17-2017, 09:55 PM
#6
Re: Failed CA smog please help
Game plan is removing the plenum and replacing the EGR valve, solenoid, and fuel regulator since I am already their and its the original 240,000 mile one, replace the manifold air temperature sensor (spontaneously received a code 25 SES), and verify all vacuum lines. Fingers crossed.
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10-18-2017, 09:50 PM
#8
Supreme Member
Re: Failed CA smog please help
Max in CA is 500? geez here its like 1500. CA is strict af
And an 89 still has to get tested? How old before it no longer has to?
And an 89 still has to get tested? How old before it no longer has to?
10-18-2017, 11:55 PM
#11
Senior Member
Re: Failed CA smog please help
The missing line runs to the bottom of the throttle body. So your egr wasn't getting any vacuum to work. Looks like you found the problem