Idle Issue

[edogg27]

First off i wanna say long time no post lol. I Got a new car and have been pre occupied with that but i still have the pathfinder and its doing very well except this one issue.

i have a voltage meter hooked up to my battery thats inside the cabin so i know what it is at all times, and whenever i stop at a red light my voltage drops to 11.7-12.5 with the subs off and radio off and heater off. but if i slightly rev it to about 1k then it goes to 14.1 or higher like it does when im driving. i think its just a low idle because it sits around 500 or less. anyway if you guys have any idea please let me know. i hope its not the throttle body.

[Towncivilian]

Are both battery terminals clean and free of corrosion?

[edogg27]

Yes i check them and they are clean. The car idles at around 500 or less when in gear at a stop light.

[Bluewulf73]

Your idle is def. low. It should be around 650-700. Have the idle adjusted. I wouldn't do it meself...afraid of screwing sum'n up.

[Towncivilian]

2001+ Pathfinders do not have adjustable idle, it is controlled by the ECU.

[edogg27]

So should i take it to my dealer or just my local shop?

[KellyBoston]

A couple months ago. I drove my 01' QX4 to Clinicals, everything was fine. When I left at 2:00 when I came to a red light, or stop, it would die. I just shifted to Neutral and revved the engine to keep it running. On my way home I called my Dad to ask what it could be, he just recommended who to take it to. I arrive at the shop an the mechanic came out and looked under the hood. He unplugged the sensor on the filter box intake, while it was running and keeping it running manually; since it continued to run, he ruled it not to be a faulty sensor.
Then he checked the vacuum lines, ruling things out as he went.
Turns out, when u press the gas pedal, there is a cable that pulls and opens he throttle body. There is a set screw that is held tight by a nut that I believe is 7mm. That nut had just worked itself loose and the spring expanded causing it to no open the throttle enough to keep running.
By accident, set my idle back at 500, by tightening the nut. I drove it or about a week, thinking it may help my Mpg. It didn't, I had Zero acceleration, so I purchased a wrench and adjusted it to 1000. Now I have learned it should be slightly less, I will adjust it the next warm day in KY.
May want to check there first!! Easy fix!!