Sentra XE L4-1.8L (QG18DE) (2000)
2. Check PCV valve operation.
3. Check that downstream of throttle valve is free from air leakage.
4. Adjust closed throttle position switch and reset memory. (Refer to "Basic Inspection".)
5. When the above four items check out OK, engine component parts and their installation condition are questionable. Check and eliminate the cause
of the problem.
It is useful to perform "TROUBLE DIAGNOSIS - SPECIFICATION VALUE".
6. If any of the following conditions occur after the engine has started, eliminate the cause of the problem and perform "Idle air volume learning" all
over again:
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Engine stalls.
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Erroneous idle.
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Blown fuses related to the IACV-AAC valve system.