FormorAccordMan

iTrader: (3)

Yesterday I pulled everything out, so I could really get in there. Even after seafoam 3k ago, you should have seen what I was able to get off the walls and plate off the TB. black greasy crap galore. So I started eveything back up, got a CEL, brought it to Autozone to reset it for me. Boom- I'm good to go. Now I have read that after cleaning the TB that the idle may be raised do to increased airflow. My rpms in drive used to be around 550, now it is at 650. Fine by me. BUT, when the car is put into nuetral the idle shoots to exactly 1000rpms. I checked everything, evey hose is tight, every sensor is connected. How long does it take for the idle to get back to normal? I must say that the car feels better after this cleaning than when i ran the seafoam in both the gas tank and vacum line. Little Help?

Bobo

The idle should be 550 to 650 for a manual transmission and 600 to 700 for an automatic according to the Haynes manual. Not sure why it revs at 1000 in neutral. Give it some time. Also tap the gas pedal ... will it then drop down?

MSmax96

what CEL code came up?

FormorAccordMan

iTrader: (3)

If i remember correctly, I think the guys handheld scanner said p0100 or something like that. he reset the light for me, so far so good- just the high idle in nuetral. I really did nto think anything of the CEL, because I just figured that she did not like that I was tampering with her. I figured that the code had something to do with the MAF, since I I tried to start her without it connected like a DUMBASS.

MSmax96

Yeah the unconnected MAF could have done it. I only ask because im gonna clean my TB real soon and you where the first person i heard that threw a code afterward.

jackiss2888

iTrader: (3)

disconnected was the term you were looking for... but yea, def. the maf doin it...

FormorAccordMan

iTrader: (3)

so what about the RPM's? Can somebody lead me to a thread that talks about the raised idle RPM after a TB cleaning? After work when I drove home, I would throw it in Nuetral at lights to see if it's getting any better and It seems to have dropped to 900. But then when I got home and threw it into park it jumped back up to 1000.

FormorAccordMan

iTrader: (3)

I know there are threads about this- little help? Surely I'm not the only one who has run into this.
EDIT- I just found a thread http://forums.maxima.org/showthread....dy#post3343611 in the 5th gen forum about about throttle body cleaning and how there TB were shorted out or something, they needed new ECU's TB's. OH MY GOD! Did I mess up my car? Is the 5th gen throttle by wire or something electronic that does not apply to our car? Im starting to get nervous

FormorAccordMan

iTrader: (3)

ANYBODY? I'm really nervous about this. Its been three days and the idle is not showing any signs of lowering itself. Any help?

Bobo

Are you **** or what? Why make such a big deal about a 1000 rpm idle in neutral! Did you tap the gas like I suggested? If so, what happens? If not do it and report back pronto. Do you think your car is going to blow up at 1000 in neutral or park?

Ninos_Maxima

iTrader: (5)

i think the 5.5th gen max is electronic tb, did you check your ecu codes, it came on for a reason, check your connections, and the 4th gen isint that sensitive, i dont think you broke your car

Xugg

I wouldnt worry about it, mines the same way...in drive ~650, neutral ~875....

Xugg

I wouldnt worry about it, mines the same way...in drive ~650, neutral ~875....how often are you in neutrall any way

Bobo

That's what I was getting at. If this is the biggest problem this guy has with his car, he should consider himself lucky and be doing cartwheels down the street, lol!

brownsvillemax

reset the idle speed manualy. check the haynes manual on how to do it... or if not got to the 4th gen how to section and look for "changing the tps sensor" and there it says how to reset the idle speed.

illmortal

Can't you just adjust the throttle cable?... I mean I would have done that right away. But what you could try to do is, disconnect your battery for a few hours. Then re-connect it (this resets the ECU) turn on your car, and rev it to 4k rpms but in intervals... dont hold it down on 4k rpms. Once the engine's warmed up to normal temp. go take it out for a ride. If this doesn't work you're gonna have to just force the rpms down by adjusting the throttle cables (loosen it)

FormorAccordMan

iTrader: (3)

Murdoch, yeah I guess I am a little ****. LOl. Yes, I did try the tapping of the gas in park. It settles back to 1000.

FormorAccordMan

iTrader: (3)

I dont think that loosening the throttle cable will do anything. The butterfly does close all the way. You can feel/ hear it snap cleanly into place

Bobo

My advice for you FormerAccordMan: don't sweat the small stuff or you'll drive yourself nuts, lol!

illmortal

Well.. then your only option (that I know of) is reseting the ECU....

FormorAccordMan

iTrader: (3)

So how many hours would I have to unplug the the battery for the ECU to reset itself. I don't want to mess with the little screw thingy.

illmortal

Eh... lets call it 3-5 hours just to be safe. I know on the Corolla's ECU all you had to do was unplug the battery for 2 hours and it would reset. Anyways, good luck. Usually if it's ECU related (computerized) it can easily be fixed by reseting the ECU. When you start the car back up (after you plugged the battery of course) I say you should just rev the engine a couple times, then take it for a spin let it recognize every gear.

FormorAccordMan

iTrader: (3)

I let it sit for about 7 hours, reconnected the battery and drove my Girlfriend home. No luck, still idles at 1000 in park and in nuetral. Drive- 650. I guess I will have to do the IACV screw at some point.

maximaintheface

iTrader: (1)

check ur thorttle and idle cables. reset ecu. check iacv screw. and calm down lol...

dki378

I just cleaned out my throttle body this past weekend with no hiccups what-so-ever. For those of your planning on cleaning out the TB by removing the air filter (& MAF sensor), I would highly recommend replacing the fuel filter while the air filter is detached from the TB at the same time. In my opinion, this makes for the easiest access to the fuel filter and allows you to really reach down in there and do the job. Just thought I'd add my two cents.

Ninos_Maxima

iTrader: (5)

if your gonna reset your ecu by unplugging your battery it only takes 20min

renatonetmail

In my g/f Mazda it only takes 30 seconds after disconnecting the battery and pressing on the brakes.

Ant96GLE

iTrader: (4)

Really? How come my CEL comes right back if I leave the battery disconnected over night?

kingrukus

iTrader: (41)

Do not worry about the raised idle. My idle was higher by 200 rpms after cleaning my TB, but it eventually settled back down. I just cleaned my TB again this past weekend.

dr-rjp

iTrader: (4)

Mine did too after an hour being disconnected. What happened with your CEL?

xlr8r

Mine took a couple of weeks to settle down but I was idling at more like 1200. Everyone used to give me the look when I was stopped at lights. It's OK now..

I guess the ECU does a slow adaptation to the crap in the IACV so when you take a lot out it takes a while to recalibrate.

Don't worry.

cam_honestiam

iTrader: (2)

You won't damage anything by adjusting the idle screw on the IACV. If you are worried about your 1000 idle, just adjust the screw little by little.

maxima_kenny96

iTrader: (10)

i had mine wwere after I cleaned it, it did the same thing but it would stall out when i stepped on the gas because I turned my idle down so that it wouldnt idle at 1200 like it was, it eventually straightend herself it.

cam_honestiam

iTrader: (2)

I just cleaned out the entire TB and IACV, having removed both, last night. My idle stayed at 1000 for a while, then simmered down to 700 after almost a half hour. I adjusted the idle screw (black phillips head) to completely closed! My idle only went down to about 680 in P. I opened the screw back up, but this did not affect the idle at all. Reason?

I assume it is because the engine is getting enough air now that it is so clean in there, so the minute adjustment of the idle screw did too little to notice.