2003 Nissan Altima idle problems

[danrace]

We have in our shop a Nissan Altima 2,5 2003 with too high idle,check engine light on and the error code is :P0507 idle air control system RPM Higher than expected.
If we delete the error the car run good with the properly idle around 1300 rpm until that' warm,when the coolant reach the regular warm temperature idle is regular around 900 rpm only with AC working.when the compressor disconnect the idle run around 1200/1300 rpm and the engine light switch on again.Definately there aren't leaks in the intake manifold,or vacuum hoses or similar problems.
Someone know how fix this problem,and anyway what' the procedure to reset the idle?
Thanks to everybody

[nissandoc]

try cycleing key on for one second and off for 10 seconds three times. this may reset idle air volume learn. if you have used any type of fuel induction cleaner, good luck, because we have seen this cause problems in any nissan with drive by wire setups. you can also try disconnecting both battery cables and touching them together for 10 seconds. this is supposed to cleared all self learn settings back to 0.

[danrace]

Thanks Nissandoc for your answer.We don't know the history of this Altima cause come from an auction.Anyway don't seems to me that someone have used induction cleaner.I had already try to reset turning the key 2/3 times and wiating 10/30 seconds each time but I haven't had any result/I'll try to disconnect the battery cables and short the two pole as your suggestion,and,if I don't obtain results need I replace the throttle body?
Thanks

[nissandoc]

one other thing you can try is "throttle valve closed position learn". first make sure that engine and trans are at full operating temp, all electrical loads off and trans in park.

1. turn ignition off and wait at least 10 seconds.
2. accelerator pedal fully released, turn ignition on and wait 3 seconds.
3. fully depress and then release accel pedal 5 times within 5 seconds.
4. wait 7 seconds, fully depress the accel pedal and hold it for approx. 20 seconds until the MIL stops blinking and turned ON.
5. fully release accel pedal within 3 seconds after the MIL goes off.

let me know how it goes.

[danrace]

Thanks nissandoc,the procedure has worked properly,now the idle is correct.Ask me suggestion about Ferrari/BMW if you need,just to "rechange"

[nissandoc]

glad i could help. i should get a star or smiley face or something. who do i talk to about that?

[02' nizzmo]

whats up nissandoc! i have a 02 3.5se auto & it wont rev past 2500 rpm any thoughts?

[jlebron13]

Hey Nissandoc, i have a 2000 infiniti G20 and in first gear the car pulls almost like it doesnt have enough air and the diognostic brought up a code P0505 Idle Air Control Valve / Auxiliary Air Control Valve. I called Infiniti and they said i had to take it to a dealer and get them to program the idle air volume and it wasn't the valve. Its sounds like you know what your talking about, hope you can help

[nissandoc]

You Can Try The Same Procedure As Described Above To Set The Iavl. However This Code Shouldnt Have Anything To Do With A Driveability Issue. You Should Have Someone With The Correct Scanner Equipement To Monitor The A/f Alpha And Air Flow Grams Readings. To High Readings And You'll Need An Air Flow Meter. Alpha Should Be Between 95-105% And Grams 3-4. IF THE P0505 CODE CONTINUES THEN YOU'LL NEED A THROTTLE BODY.

[sagaknon]

hi i hace a similar problem but mine its a altima 98 when i start the car in the morning or when i turn the ac on the rpm goes down and it feels like the car try to shut down itself, i have change the idle air valve already but the problem still i hope u guys could help me thanks

[kellieve]

crank position sensor help

[max3519]

Originally Posted by danrace

We have in our shop a Nissan Altima 2,5 2003 with too high idle,check engine light on and the error code is :P0507 idle air control system RPM Higher than expected.
If we delete the error the car run good with the properly idle around 1300 rpm until that' warm,when the coolant reach the regular warm temperature idle is regular around 900 rpm only with AC working.when the compressor disconnect the idle run around 1200/1300 rpm and the engine light switch on again.Definately there aren't leaks in the intake manifold,or vacuum hoses or similar problems.
Someone know how fix this problem,and anyway what' the procedure to reset the idle?
Thanks to everybody

replaced throttle chamber then relearn idle, sure fix!!!!

[sagaknon]

well i changed the idle valve already even the crank sensor but still it's driving me crazy

[satdiver]

Hey, new guy here with an infiniti g20 problem. I have an idle problem that I spoke to the dealer about and his service history said bad aux air control valve. Got one, but can't find where it goes. This is my daughters car and I don't have any repair manuals with diagrams. I'm hoping I dojn't have to tear the whole top end apart to replace this thing. Can you please help?
Thanks.

[shab_xp]

Hi Nissandoc,

When you said 'turn ignition on', you did not mean crank up the engine right?

When I tried with the engine off, the MIL is not blinking. Did I miss something?



Thanks.

Originally Posted by nissandoc

one other thing you can try is "throttle valve closed position learn". first make sure that engine and trans are at full operating temp, all electrical loads off and trans in park.

1. turn ignition off and wait at least 10 seconds.
2. accelerator pedal fully released, turn ignition on and wait 3 seconds.
3. fully depress and then release accel pedal 5 times within 5 seconds.
4. wait 7 seconds, fully depress the accel pedal and hold it for approx. 20 seconds until the MIL stops blinking and turned ON.
5. fully release accel pedal within 3 seconds after the MIL goes off.

let me know how it goes.