Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE1997LSS V6-3.8L VIN KREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSEXHAUST GAS RECIRCULATIONTESTING AND INSPECTION
1997 Oldsmobile LSS V6-3.8L VIN K
Exhaust Gas Recirculation: Testing and Inspection
1997 Oldsmobile LSS V6-3.8L VIN KSECTION Testing and Inspection
EGR Valve Flow:
Too much EGR flow at idle, cruise, or cold operation may cause any of the following conditions to occur:
^ Engine stalls after cold start.
^ Engine stalls during closed throttle conditions.
^ Vehicle surges during cruise.
^ Rough idle.
^ DTC P0300 (misfire detected).
Too little or no EGR flow may allow combustion temperatures to get too high. This could cause the following symptoms:
^ Spark knock (detonation).
^ Engine overheating.
^ Emission test failure.
^ DTC P0401.
^ Poor fuel economy.
EGR flow diagnosis is included in the DTC P0401 diagnostic table. Pintle position error diagnosis is covered in DTC P1406. If EGR diagnostic trouble codes P0401 and/or P1406 are encountered, go to the DTC tables for diagnosis.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.