Rough, Dropping Idle - Page 5 - B15sentra.net

brads sentra · 04-29-2008, 10:54 PM

After reading upon reading and 5 weeks of dealing with these morons, look what I found on Nissan's tech site........

Service Bulletin - NTB04015 2002-2003 Sentra/Altima
IF YOU CONFIRM: An applied vehicle has the following symptoms: · Engine RPM rises at start and then drops and cannot maintain idle OR · Engine has low/rough idle AND · Engine runs well if the throttle is held open NOTE: The above symptoms may occur after an ECM reprogram or the vehicle battery was run down (discharged). ACTIONS: · Conduct the "Engine Running and Warm Up" procedure · Perform the "Idle Air Volume Learning (IAVL)" procedure · If the IAVL does not finish ("CMPLT"), perform the "Corrected Idle RPM Check". Then, perform the IAVL procedure again. · Refer to the Service Procedure starting on page 2 for details

***This is EXACTLY what I'm experiencing***

Key is this quote "NOTE: The above symptoms may occur after an ECM reprogram"

I am fuming with anger. It's apparent they may have tried this procedure, it didn't work, so they automattically blame my mods and try to get paid.

I cannot wait to see what they have to say tommorrow.

brads sentra · 07-20-2008, 03:26 PM

So it ended up being my MAF. Car finally threw a code, and went to limp mode.

Replaced the MAF, and cured the dropping idle.

I hope this saves someone the frustration I went through.

Projectb15 · 07-21-2008, 05:36 PM

i would disagree with everyone's input about running brake cleaner on the sensor, wd-40 works a little better than brake cleaner, safer on electronic components. It may be more sophisticated than just a clean, it may have a bunch of carbon build up, but the motor may not be running correctly inside the controller, mine was just cleaned and after everyone puts on a header at least for the 1.8's end up having idling issues.

4218kris · 09-15-2008, 05:16 PM

i can drive my car for awhile sometimes like a week then when trying to hold a mph it will get jumpy like opening the throttle a little more then after just after it goes in to limp mode even pressing the gas seems to make it go slower it has a new tb and maf my best guess is short in the wiring or the ecu as ryanl said

04-29-2008, 10:54 PM	#61
brads sentra That Guy Join Date: Sep 2001 Location: Plantation, FL.	Ammo In Hand After reading upon reading and 5 weeks of dealing with these morons, look what I found on Nissan's tech site........ Service Bulletin - NTB04015 2002-2003 Sentra/Altima IF YOU CONFIRM: An applied vehicle has the following symptoms: · Engine RPM rises at start and then drops and cannot maintain idle OR · Engine has low/rough idle AND · Engine runs well if the throttle is held open NOTE: The above symptoms may occur after an ECM reprogram or the vehicle battery was run down (discharged). ACTIONS: · Conduct the "Engine Running and Warm Up" procedure · Perform the "Idle Air Volume Learning (IAVL)" procedure · If the IAVL does not finish ("CMPLT"), perform the "Corrected Idle RPM Check". Then, perform the IAVL procedure again. · Refer to the Service Procedure starting on page 2 for details *This is EXACTLY what I'm experiencing* Key is this quote "NOTE: The above symptoms may occur after an ECM reprogram" I am fuming with anger. It's apparent they may have tried this procedure, it didn't work, so they automattically blame my mods and try to get paid. I cannot wait to see what they have to say tommorrow. __________________ 2006 Acura RSX Type-Sex 2002 Molten Silver SE-R SOLD 2001 Sentra GXE Stolen & Recovered Stripped R.I.P 5/9/2005

07-20-2008, 03:26 PM	#62
brads sentra That Guy Join Date: Sep 2001 Location: Plantation, FL.	Update - Fixed So it ended up being my MAF. Car finally threw a code, and went to limp mode. Replaced the MAF, and cured the dropping idle. I hope this saves someone the frustration I went through. __________________ 2006 Acura RSX Type-Sex 2002 Molten Silver SE-R SOLD 2001 Sentra GXE Stolen & Recovered Stripped R.I.P 5/9/2005

07-21-2008, 05:36 PM	#63
Projectb15 Registered User Join Date: Sep 2007 Location: Charlotte, NC	i would disagree with everyone's input about running brake cleaner on the sensor, wd-40 works a little better than brake cleaner, safer on electronic components. It may be more sophisticated than just a clean, it may have a bunch of carbon build up, but the motor may not be running correctly inside the controller, mine was just cleaned and after everyone puts on a header at least for the 1.8's end up having idling issues. __________________ 2000 Nissan Sentra GXE, ES MMI's, Ebay CAI, Fidanza SS, Unorthodox Flywheel, XTune Header, Kumho Ecsta AST rubber, Megan FTB and lowering springs, KYB Gr-2 Shocks and upper strut bushing, ABS Dynamics Front Lip, Megan exhaust, Black housing headlamps and tails, Nismo Shift knob, se-R sideskirts...

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09-15-2008, 05:16 PM	#64
4218kris Registered User Join Date: Sep 2008	i can drive my car for awhile sometimes like a week then when trying to hold a mph it will get jumpy like opening the throttle a little more then after just after it goes in to limp mode even pressing the gas seems to make it go slower it has a new tb and maf my best guess is short in the wiring or the ecu as ryanl said

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