coskuntarik

I have low rpm problem it goes 400 300 rpm.When I press the gas pedal everything seems normal but after pressing brake than the gauge shows 300-200 rpm than it comes 750 rpm again.

Nissan service says I need to change idle air control valve with oem one.

What about after market ?

Any experience or advice ?

bumpypickle

iTrader: (1)

When is the last time you had a tune up? Also check for visibly worn or disconnected hoses, something may have not been connected properly... do you have any engine codes currently? (Is your check engine light in)

coskuntarik

I had tune up throttle body and also cleaned idle air control valve too

My check engine light not in.

All hoses and cables is right, no disconnect or leaking problem.

There is one code shows up it is about maf sensor,no codes about idle air control valve

bumpypickle

iTrader: (1)

Did you clean your maf? Is the maf OEM? are you limited to a certain about of rpms? Usually when your maf goes bad you'll be limited to 3000 or 3500 rpms I believe, or something of the sort.

So you said your CEL isn't on but there is a code for your maf? Is it pending?

coskuntarik

I have cleaned the maf sensor.Also it is soldered before.There is no limit of rpm's, I can make it 6.500 rpm.I dont know the code number but it is about maf sensor I am sure. I saw the screen of obd scanner.

My problem is rpm goes down when I dont press the gas pedal.
it goes 200 300 rpm than comes again 750 rpm and sits there.After pressing gas pedal and release my foot it goes down 300 rpm than comes 750 rpm and sits there. 1-2 seconds stay in the low rpm than normal.

HERE İS THE VİDEO
İn video it goes 500 rpm because it was N. But at D is more goes down until 200 rpm

http://tinypic.com/player.php?v=1zg5...9#.Vkr023bhDIU

bumpypickle

iTrader: (1)

you can check your codes without a reader by following this link :
you can decode your CEL using this link: https://maxima.org/forums/4th-genera...ere-first.html


Pull the codes and let us know what comes up.

coskuntarik

I have checked with a genuine Nissan Obd Scanner. (Just maf sensor failed)

Does it make difference with a self diagnotics ?

bumpypickle

iTrader: (1)

Well no, but it would be nice for us to see an actual code to help diagnose this problem your having. It only takes about 5 mins if that, to check and clear them. Hell, sometimes I even pull off the side of the freeway to clear my EGR code in about 3 mins

coskuntarik

What about aftermarket idle air control valve ? Do I need to buy oem ?

bumpypickle

iTrader: (1)

Well you have a code for an maf so I would be inclined to think that would be the issue. If you insist on buying another IACV, ONLY buy oem. Do not buy new, buy a used one from a junkyard if you have access to one, ebay or even here on the org in the classified section.