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Surging Idle Forums > > Surging Idle Surging Idle
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Sentra Nissan Sentra Discussion Forum

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Old 03-10-2018, 06:11 AM
robrom56 robrom56 is offline
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2004 Sentra
Join Date: Mar 2018
Posts: 2
Default Surging Idle

New to this forum !!! I have a 2004 sentra 1.8L. 102,000 miles. Warm engine at idle RPM drops 200 to 300 then returns to normal. Happens randomly. The MAF sensor was replaced 2 weeks ago due to no acceleration above 20 MPH. Any help appreciated Thanks !! Also checked codes have a P0171 lean bank 1 "Pending"

Last edited by robrom56; 03-10-2018 at 06:15 AM.
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Old 03-10-2018, 03:12 PM
paug01 paug01 is offline
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2002 Frontier King Cab
2002 Xterra 2002 frontier sc 4x4
Join Date: Oct 2017
Location: cleveland ohio
Posts: 4

hi there,check the rubber intake boot between the air filter box and the throttle body,chances are it is torn open between the bellows.this causes an air leak that is not accounted for by the mass airflow sensor because the leak is after the air flow sensor.
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