Nissan Xterra Throttle Valve/Accelerator/Idle Air Relearn Procedures

This video covers the IAC relearn procedures including:

- Accelerator Pedal Released Position Learning
- Throttle Valve Closed Position Learning
- Idle Air Volume Learning

When I did this it was an attempt to fix a code of P0507 (high idle). Please post any questions, comments, or suggestions in the comments section below.

Timestamps:
Intro: (0:00)
(2:13)Accelerator Pedal Released Position Learning
(3:34)Throttle Valve Closed Position Learning
(4:23)Idle Air Volume Learning

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#howto #diy #auto

[TrueRudolph]

Just did total rebuild heads, chain, ECT. Your videos really helped. Ive watched them all and yours was the most informative, had issues with v.v.timing, cleaned those up but still had looping idle until now, I still have a vdc and slip light lights on but I think after clearing codes they'll stay off . Thought I skipped a tooth and just don't have it in me to tear this thing apart again mentally or financially. But I love my truck, my father owned three and swore by their reliability and when he passed I inherited his 2010 frontier and it's been my daily driver for work ever since. It's never let me down even when I blower a head gasket it still got me back and forth until payday, 180, 000 miles and still getting it done. Thank you.

[mdub]

Bro, if you’re ever in utah, shoot me a message and I’ll totally buy you a beer and steak.. seem like a smart dude for reals, and I’m very impressed you’ve learned all this just reading the service manual and then are able to translate it to layman terms for those of us that mean visually Best

[Vodkadrummer]

Just got done after an hour of failure...as I cleaned the throttle body 2 weeks ago and she was idling about 900 w high idle code. Thank you 1000%!! So glad you made this video. Super accurate and worked on my first try after watching the video. Not sure what I failed to do right the first 8 times, but glad I got it to work. *A few things I did: Stepped away with battery disconnected for an hour. Drove 1 mi to warm up. Followed EVERY step of this process. **Noticed when I held the accelerator down, this time it blinked twice as long before going solid....it really should blink that long if you did it right about 20 sec...oh, and you'll know it worked...it will search slightly and get close to 500 RPM then settle at 625 and sit while you grin ear to ear. Don't give up!!

[stevengraebner]

Hey Ry I’ve been following you for sometime trying to diagnose a high idle problem with my 08 Xterra.
I have replaced cam sensor, crank sensor(after Market parts), the cooling fan clutch(after market) cleaned / replaced the Throttle body, checked for Vacuum leaks, replaced EVAC Canister and valve, checked for codes. I have just diagnosed the high idle problem to the aftermarket fan clutch being out of spec and causing too much engine load, making the ECM think there was a load at idle and compensating for the load.
I purchased a factory Nissan cooling fan clutch today and it solved a three year high idle problem. I had also had problems with the aftermarket sensors not reading the timing marks properly (engine still running poorly / no start condition and same codes showing faulty sensor). Replaced with factory sensors (doing the job twice) to get them working correctly. Let your followers Know that not all parts are the same and some replacement parts can effect performance.Thanks for the video’s.

[chrisl]

Dude just walked me through a couple thousand dollars of repairs. Saved me a ton of money ! Great step by step instructions so that a novice like me can do the work. Too many people assume you have a certain level of skill or are a mechanic. I am a very reluctant mechanic as I don’t want to do the work/ hate doing it, but can’t afford to pay someone else.
So thanks !

[deannabilecki]

I have a 2002 xterra v6, 3.3 supercharged, manual 4X4.
I Had a misfire code on #2 piston with check engine lite on. I put in new ECM, plugs, wires, cap, rotor, distributor, fuel injector (cylinder 2), new fuel pump, 2 cats on pass side, and (4) o2 sensors. NOW it starts runs great until the engine warms up...then it sounds like its sucking air and it won't rev up enough to drive. After it sits for 24 hours...it starts right up drives till it reaches operating temp then will only idle. No check engine like comes on and only old misfire codes won't erase.

Thanks Bill in Delaware

[ErnestoRodriguez-shym]

Finally! After 2 months of repeating these steps. It finally worked!!! I finally got fed up, and stomped the crap out of the accelerator 5 times. I am driving it now and really don't want to shut it off. LOL. The only thing I really have to say is don't give up!!! Thank you RY for these videos!!! Now I could check this off my to do list during my vacation. LOL. Of course when my wife asked how I fixed it, it's going to be the story of the fish that got away.

[Zergrush]

After cleaning my throttle body the idle was high starting up to 2k rpm. After these procedures were performed it idles at a cool 900rpm. Worked like a charm. Thanks for all your vids man! They are greatly appreciated

[carlosfigueroa]

It only takes one smart person to explain anything and you get it real easy,

[NC.]

I just cleaned my throttle body on my 2006 Nissan Pathfinder. Didn't disconnect any wires just a few screws from the intake. When I started my suv, the rpm's were high. I stumbled upon your video and followed step-by-step and it seemed to have worked. The check engine did not go off so l will wait until it the engine cools down if not, I will have to take to get that check engine cleared off. Anyway, thanks for the video! It really helped me out.

[cs]

Did this to my 2017 Frontier....and it worked perfectly...thanks...learn something new everyday.

[TheBondy]

You're the only video I saw that actually stated wait until the check engine STOPS flashing ! Fyi for other people IS

Thanks for your help mate saved me buying a new ecu or $625 throttle body from what I've read about this problem!

[EnchoLuta_]

Thank you so very much you just save me money my 2001 Xterra have that problem I followed your instruction and now my car is back to normal this is a great learning experience.

[taylorpopp]

Ry's videos are changing the way I approach working on my 2007 Xterra. I recently had to deal with this issue after cleaning my throttle body. I must have shifted the plate at some point. Read out code P0507. I tried about 12 times to get the relearn to complete using the turn the key and hit the gas dance.

Each time as the procedure ended and I waited through 20 seconds of idling, I thought to myself, "Is anything even happening?" It just idled a touch high and the problem kept happening, the trouble code remained.

Then after a short drive to downtown Austin, I thought, "I'll run through it again real quick." I shut off the cabin lights, removed the stereo faceplate and turned off the AC. I also paid far more attention to the timing. I believe the most critical timing event is the 7 second wait after hitting the gas five times. If you get that right, everything works. Also, the drive was crucial. All the other times I was trying the procedure while the car was still warm(ish) but not directly after driving it. It makes sense to me now that the Diagnostic Mode cannot diagnose an engine that isn't at full operating temp.

In the end, the Idle Relearn took and my idle dropped from 800 to loww 600's.

You can tell when it happened. When you successfully initiate the idle relearn the Xterra slightly revs the engine and then runs down the idle to where the car nearly stalls and then repeats. It becomes apparent that is it running a program and searching for the ideal air flow to get the idle it wants. Then you rev it a couple times and watch it drop to normal steady smooth idle. Still had to clear the code myself. But there is no longer any, "Is anything even happening?"

[joshdavis]

Brilliant!
Easy to listen too, no annoying moving camera.
Not complicated, at last a normal person😊

[petersivillo]

excellent presentation- one of the best I have seen-Thanks

[dmil]

Ryan your videos are awesome! Please keep up the good work. My 2005 Xterra needs a water pump and timing chain guide replacement and your video is spot on for guiding me through the process. Thanks buddy

[neilyakuza]

Thanks for the vid Ryan, I have to do this for my 2010 Xterra. So much easier to see the procedure visually.

[mark]

I can't stress enough how important the timing is here, I used a stopwatch tried for 20 minutes got stopwatch over in five minutes, nice video bud

2004 Nissan X-trail 4x4 T30 issue was after I ceaned throttle body and maf, it had high idle and shakes when turning it off, all sorted now

[FunkyColdMedinaDIY]

Excellent video. Very informative. Everything worked on the first try. Car is running great now. 2006 altima