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Home >> Audi >> 1987 >> 5000 CS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> BOSCH Cis-E III System >> Testing >> Idle Stabilizer Valve
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Idle Stabilizer Valve

Turn ignition on. Insert fuse into fuel pump relay for at least 4 seconds. Indicator light should display Code 4431. Close full throttle switch. Idle stabilizer valve should cycle when switch is closed.