Weekend temp is about 100 over here in Dallas.
I did a quick run to grab some food during lunch time and I noticed with my ac on and at idle the RPM is keep going up past 3k rpm.
this is not the first time, it happens before any ideas?
BTW car has about 50k on it and the plug has not been replace yet. It will in the coming weekend.

Thanks

 

Clean your throttle body.
Goto www.morotrave.ca for instructions.

 

3k? good lawd that's high

 

...very high

 

what was the website again?

thanks

EU

 

www.motorvate.ca He accidentally missed some letters there/...

ARFF

 

Ok fellow maxima enthusiast.
I have cleaned my tb and it was ugly. I will replace my spark plug too, at 52k this afternoon. But I have notice yesterday after about 30 minute of highway driving and park at the mall lot and leave it at idle for a while and the RPM start jumping around again.
Now I really confused. Any further suggestion?
I doubt is my spark plug but who knows?

Please I hate to see the beast getting sick.


Thanks

 

Check for leaks in the intake air tubing, especially at clamps/connections and in between the accordian-style ridges (if there are any, I can't remember). Leaking air can wreak havoc on your idle.

Give it a shot.

JP

EDIT: That is...look for leaks after the MAF but before the TB.

 

I did double check everything today, I have forgot to tighten one clamp after the maf before the TB. Hopefully tomorrow thing should be ok.
I have a great advice, clean that TB, Trust me, It's ugly down there.

Thanks

 

My car did the same thing...Your gonna need a new MAF...
My RPM's were high then went down and my car would shut off all the time..
I took it to the dealer...they said i need a new MAF...

 

If you try a new MAF (after all else), make sure you buy from DAVEB. Find his number in the member directory or FAQ.


ARFF

 

I need new MAF, are you sure? My car never shut off ever.
Maybe it is an early indication? any other opinion
new MAF... ouch ... ... It should be cover under my extended waranty or under emission right?

 

Yeah It might be an early indication...But i would take it to nissan just incase..
But its up to you

 

Yeah, if you got an EW, you might let them look at it, but don't pay. It may be covered, not sure...

 

hmm it is scary.
mine is 2000 max, MAF shouldn't be that sensitive.
Well I have to wait what happen this coming week.
If still there then I will bring it to Nissan and let them check it.

ahhhh the great wonder of VQ


EU

 

Hello, how're you doing ? Haven seen you for quite some time now. Btw, I saw someone's post regarding the car revving up on it's own, turns out that the cruise control is faulty. I think it's the cable or the vacuum. Therefore it's not throwing any SES code.

 

Hi waz up?
Doing ok just slow at work so I have time to fool around with the car again. You know car also need a special attention and not only "the other half"
How are you, any boost yet?
Yes it doesn't throw the SES light at all. Hhmm

well thanks for the tips. I'll look it up using search
EU

 

I have compile this list and here is the characteristic of the problem and condition of the car.

y2k 5 spd and 51k on it
Drop K&N filter
TSB done on the fuel cut issue back in 2001

This is only happen when the outside temperature is above 80
initial problem:
1. Catch up the high RPM at idle when the engine is hot and out temp is hot
2. Try to clean the TB as suggested (preety bad, need to use tooth brush to clean it)
3. The poblem still exist and the RPM is couldn't stay at idle after 30 mnt highway drive. (Loose clamp)
4. Replace all sparks with OEM
5. RPM at idle is showing around 900
6. Still awaiting

A couple of things to add into possibilities:
1. Early indication of MAF failure
2. Some vaccum leak
3. Bad coil/s
4. mis-adjusted /malfunction TPS (I don't know what is maybe a throtle pressure switch?
.....

what is the idle suppose to be?
and any other idea of other possible cuases?

 

now the SES light is on, I am really pi$$ed... I love this VQ drama,
anyone have any other idea?


Please advice.

 

Go to autozone and bring the code back to us. That should shed some light on it.

jp

 

There was a similar post awhile back on this subject. The culprit was a mis-adjusted cruise conrtol cable.

 

I have reset the ecu overnight, the SES is off for now, If it is come back again then yeah I will bring it to autozone.

and about the miss adjusted cruise control cable? where should I go about this.
I have read that post but he didn't mentioned the exact how to.
Maybe you can help me out.


Thanks

 

He actually brought it in to the dealer and they adjusted the cable for him.

 

I see, the dealer fix it.

 

Idle still jumping around so I clean up the TB while the engine is running. The rpm seems to be stay steady now, but the RPM at idel still to high al,most 900 and I believ it is recommended around 625 +/- 50.

I have SES light on again and it says P0505.
Look at the manual and it says Idel Air Control Valve.
hmm should I take it to the dealer and let them play with it or?


any suggestion

Thanks in advance

 

Idle still jumping around so I clean up the TB while the engine is running. The rpm seems to be stay steady now, but the RPM at idle still to high almost 900 and I believe it is recommended around 625 +/- 50.

I have SES light on again and it says P0505.
Look at the manual and it says Idle Air Control Valve.
hmm should I take it to the dealer and let them play with it or?


any suggestion

Thanks in advance

 

Just wondering, how many miles do you have right now ? Have you ever changed the PCV valve ? I don't know if that would help but might be worth to try as it's only a couple bucks.

 

Sounds like you eeeekd up the IAC? Maybe spray it out and blow it dry with compressed air? Wires attached too? Are you under warranty?

ARFF

 

I have almost 52k on it. PCV valve, let me try that.
yes I have extended waranty that I purchased from Nissan back then.
Let me double check all the wires and vacum hoses tomorrow morning.
I will also bring back to the dealer if I am lazy, with the ses light on they have no reason to reject it.

Fuel consumption is way to much at this moment.


saxdogg
you suggest that I remove the IAC from the engine and spray it with the compressed air? hmm what is it suppose to do?

thanks

 

Maybe there is jst some "gunk" from the cleaning sticking it up...maybe shoot some cleaner in there again and then blow it out to dry it out.

Maybe? :shrug:

ARFF

 

I had the same problem - 2k1 5spd - the 1st time I brought it to Nissan they couldn't reproduce it. A while later I was stuck in stop & go traffic on a hot day & it started happening again (idle over 3K) - I brought it straight back to Nissan and left the motor running & grabbed the service manager. He found the problem in a minute - unfortunately he didn't communicate the details to me but from what I understand there is a wire that controls the throttle (even though it's 'electronic') - this thing passes through a yoke/harness and was sticking there (only when hot) - they brought the car into the shop & either filed that yoke or lube'd it somehow. Anyway I have not had the problem since. Sorry I couldn't be more detailed (I'm not too mechanically inclined). I'd say just drive it to the dealer the next time it occurs and they'll figure it out pretty quick.