hi
i wrote a while ago about grinding noise from fransmission when going uphill or accelerating quickly. also hard up and downshifts
today nissan tech said that he hears a pinging noise and its running lean, and that i need new MAF end ECU update

its 00 max.

what is pinging noise? ;D
and should i trust him?

 

hmmm...i had that before tooo....
but i switched to premium gas (after i advanced my timming) and i dont hear it anymore...and i know what you're talking about when you accelerate, it was pissing me offf......
but definitly get new MAF, if you think that maxima is loosing power anywhere below 5200 rpm....
good luck
huso

 

well but the noise is coming from transmission not the engine.... ( i think so at least...)
plus I can also hear a clunking noise when starting the engine... not always but pretty often.
so im really confused... he quoted me $175 (includes maf, labor + ecu update)
i know i could swap maf myself, but i prefer that he does it so if anything i can blame it on him ;D

 

I have a 2000 Max SE and i Have that same noise when I accelerate, especially when the A/C is on. If you find out what it is let me know.

 

im not gonna have new MAF till monday / wednesday... i will let you know. i'm just afraid im gonna spend $200 on a maf, and the problem still will be there.

 

what up man, i have the same problem my car the the pinging noise also. i took it to the dealer they said the timing was off, my computer need to be reprogram, but it can also be the gas you are using.

 

but nobody explained me yet... what is that pinging sound... how does it sound like? i'm getting like clanking / almost grinding sound... is that it?

 

I have the same pinging, rattling noise when I accelerate. Normally to get the rattling to stop, I have to let off the gas pedal, then slowly accelerate again. I'm not sure what the problem is. I friend said he thinks it's the timing belt. I use premium gas, at least 91 frequently. I guess I will have to visit the dealer to see what they think. Any other suggestions anyone?

 

Does anyone know how to fix this pinging....it started 3 weeks or so ago and is getting worse and seems to loose a little power when pinging. The mechanic said use better gas, which I always use premium and a fuel injector addictive which they said would help but doesn't at all.....

 

are you filling up at the same station? i would try using a different brand of premium.

 

No I have tried different stations, maybe 5 different ones...I threw a code I guess for the O2 sensor by the firewall, but that has been a while this pinging is new ...also recently I get the stall when starting,,,,mostly when cold...the stalling strted after a tuneup, by a local station, brought it back in and they say it's not something they did, though it never di it before...

 

i've heard this rattling pinging sound on the murano as well...when it drove by me i hear that sound from outside...but my car has the sound as well it just sound like chains rattling or something...it doesn't bother me anymore so i just ignore it =/

 

Mine's on acceleration, the harder you push the pedal the louder it is...seems to lose a little power when it's louder, drives fine out on the highway unless you have to mash the pedal, but off the line everytime you hear it...

 

Hope this answers your question. http://www.type2.com/library/engineg/ping.htm Next time....


....

 

So, in order to minimize the risk of pinging, do the following:

1. Make sure your engine doesn't over heat!
2. Make sure your timing is not too far advanced.
3. Make sure your compression ratio is not too high (< 7.5 to 1)
4. If necessary, use higher octane gas.

If you take care of the first three, you shouldn't have to worry about the last one.

It never overheats
Just had a tuneup last Friday so i hope the timing is right..but who knows
Stock engine, so compression is whatever that is, 82k on it
Using Super and fuel injection cleaner which 2 mechanics old me to use

I'm not sure where else to go with this, could it be the MAF or the O2 sensor (firewall) causing this?

 

Well, yeah, anything to minimize detonation or pre-ignition

 

So should I replace both and if so can I do it...regular type skills, and any idea where to buy them,
the station wants $300 just for the O2 sensor replacement....could one of these be causing cold start stalling?
Talked to the girlfriend and she on occasion has used the cheap gas....geez, so I'll put in some octane boost and refill today

 

the stock compression ratio is either 10:1 or 10.5:1
timing is set at 14 or 15 btdc so i doubt a local station has a consult 2 to do timing changes. there should be no need to run injector cleaner when running super unless you are just doing it every once a in a while. i hope you werent talking about every fillup. is the ses(service engine soon) light on? if a tuneup was just recently done and the pinging is new, i would check to see what kind of plugs they used. if it was anything but ngk then they need to be replaced with them.

 

I put in some racing octane boost and refilled the tank and the problem got less and now is barely noticable. The stalling and occasional rough idle is a problem. The stalling started after the tuneup, I brought it back they say there isn't a problem....it does have the check engine light on and has on and off for a while but stays on since the tuneup, they said when I went back I need an O2 sensor near the fire wall. Symptoms I have read on this site made me think the MAF sensor may be bad but no code....what would make it stall and run rough when cold....all the sudden, car has 86k on it..Are those two expensive and anyone know where to get a good price.....also are they just a plug in deal....fairly simple, not feeling much confidence in the last mechanic...

 

"Pinging sounds like rocks being thrown around inside your engine. "

that's what i wanted to know ;D
also... i started putting 93.... after a day the noise stopped. not sure if it stopped for good or not... but last 2 days i did not hear it.

On wednesday i should have a new MAF. that should fix loss of power too..
I'm a happy camper ;D i was afraid i will need a new tranny or something.

 

i guarantee they put in bosch or some other brand of plugs other than ngk.

 

So the car can stall without NGK plugs?

 

hesitation, studdering, stalling, etc have all been side affects of using non ngk plugs. i see a thread about it in the 4th gen section routinely.

 

Wow.....guess I better check thanks...

 

UPDATE...
I just picked up my max with brand new MAF, ECU upgrade and air filter ;>
all i can say is... "wow what a difference".
- no more pinging ( so far ... ;-)
- more power (butt-dyno'ed but definitely stronger)
- a lot more responsive at low end.
i'm happy so far.

 

Stalling getting worse.....maybe 7-12 times per morning....any ideas?

 

did you check the plugs or at least ask the mechanic which plugs they used? you really should start there because you didnt have a problem before the tuneup and after it you did.

 

I will tomorrow, then what? After the plugs? Any steps next? thanks

 

after you replace them with ngk coppers, platniums or iridiums then you should be set.

 

did you ever check the codes to see if your knock sensor is bad? The ks detects detonation and retards the timing to reduce/elminate the detonation caused by pre-ignition of fuel. If anyone knows of the location of the KS on a 5th generation, please advise. The url below talks about the fucntion of the KS and where to locate on a 4th gen, but I need location on 5th gen.

http://www.motorvate.ca/mvp.php/507

okharren@sbcglobal.net

 

same place, right in the middle of V

 

how about the ignition coils, these things keep breakin on 00 models, i changed a couple on my car