1998 trans am ram air / air injection problem.
08-24-2020, 04:37 PM
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1998 trans am ram air / air injection problem. I'm having hard time trying to fiqure out .Po412 Air Switching Valve "A" Problem. i bought a new secondary air injection pump cause old 1 was rusted from being a up north car. i replaced rotted air vacuum lines. i believe it may be a check valve problem cause when i disconnect the line on secondary injection sytem i can hear the exhaust and i know i shouldnt hear that. i live in an emission county. any advice will be respected.
Last edited by Punch355; 08-26-2020 at 04:26 PM.
08-25-2020, 04:21 PM
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1998 Firebird T/A Air solenoid location I believe my air solenoid may have crapped on me. i put new relay in (air sole relay) and the relay is not clicking(checked with my solus) signaling that there may be an opening somewhere. Where is the air solenoid which goes hand in hand with air relay. air smog pump relay works just fine. unit is 1998 Trans Am. Help!!!
08-26-2020, 02:28 PM
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Come to find out my exhaust check valves were really bad., and apparently they do go bad. i have 150k miles on unit. i changed the exhaust check valves both sides. i had code p0412. the code went away. 
08-26-2020, 02:32 PM
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Come to find out my exhaust check valves were really bad., and apparently they do go bad. i have 150k miles on unit. i changed the exhaust check valves both sides. i had code p0412. the code went away. i was surprised
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