Idle Speed Too Low on D - How to Adjust Idle? - Nissan Forums : Nissan Forum
 
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#1 Old 11-20-2008, 06:22 PM
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Exclamation Idle Speed Too Low on D - How to Adjust Idle?

Hi guys, got an 03 SL QR25 with 67K, i've searched the forums and it seems that this engine, some shaking during idling is sometimes normal, but my idle is at about 400-500 when its in D, probably around 600 in Park, I want to adjust the idle a little bit so its less noticeable, it annoys me, is there a way to do so on this engine or is it all electronically controlled.

Please, no responses telling me to go to the dealer, they most likely wont help, and they can go fly a kite.
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#2 Old 11-20-2008, 08:41 PM
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Sorry but no other choice than to go to a dealer unless you buy the correct equipment they use to adjust the idle since you can't do it manually it is all done through the ecu.

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#3 Old 11-24-2008, 04:03 PM
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Sorry but no other choice than to go to a dealer unless you buy the correct equipment they use to adjust the idle since you can't do it manually it is all done through the ecu.
Well the dealer said that even they can't really do anything about that, idle is decided by the ECU as as long as its within spec there is nothing that can be done.

Now, since that is out of the way, what could I do to POTENTIALLY make the car idle smoother? Air Filter? Spark Plugs? Etc?
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#4 Old 11-24-2008, 06:44 PM
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have you tried this?

http://www.nissanclub.com/forums/f-q...procedure.html


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#5 Old 11-24-2008, 06:51 PM
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Originally Posted by fr0mastaj View Post
Yeah I did that. My car is not modified in any way so it didnt do anything because there is no new air volume unfortunately. Thanks though.
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#6 Old 11-24-2008, 08:54 PM
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Originally Posted by spidremedia View Post
Well the dealer said that even they can't really do anything about that, idle is decided by the ECU as as long as its within spec there is nothing that can be done.
IIRC, It can be adjusted in 10rpm increments by the machine that all Nissan service centers have. Make a buddy. They can do it, but they're lazy.
You might be able to modify the throttle body a bit with the screw that controls the flap so that at idle it sucks in a bit more air (which in turn will raise the RPM), but that's not something I would want to mess with.
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#7 Old 11-24-2008, 11:19 PM
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Originally Posted by digitalbow View Post
IIRC, It can be adjusted in 10rpm increments by the machine that all Nissan service centers have. Make a buddy. They can do it, but they're lazy.
You might be able to modify the throttle body a bit with the screw that controls the flap so that at idle it sucks in a bit more air (which in turn will raise the RPM), but that's not something I would want to mess with.
Hahaha, make a buddy at the stealer, thats a concept! hehe. I'll look into it, but otherwise, anything I can do on my end? Possibly go with synthetic or something?
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#8 Old 11-25-2008, 02:03 AM
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^ The second part of what I wrote, yes.
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#9 Old 12-20-2008, 06:33 AM
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Is it possible for you to reset the ECU?

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#10 Old 12-21-2008, 02:48 AM
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Is it possible for you to reset the ECU?
I wish i knew if that works... anyone?
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#11 Old 12-21-2008, 03:21 AM
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Originally Posted by Sf2fan View Post
Is it possible for you to reset the ECU?
just unplug the negative from your battery for about 10min.... it should reset your ECU


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#12 Old 12-21-2008, 01:34 PM
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Thats all fine and dandy, but I doubt that will make RPM's magically go where I want them to

Just bought an 08 Mazda 6 so I might be sellin the alti
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#13 Old 12-21-2008, 08:20 PM
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Well it costs nothing to try that ECU reset. I considered a Mazda6 before I got my Altima. What sold you on the Mazda?

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