hope to get some insight from someone that maybe has gone tru this?
well i got a 95 se that had a weird engine noise coming from the timing chain area. now i noticed it kinda gets loud when u rev up. well i driven the car and first and second get power but at 2200 rpm it seems to lag a lot, then all of the sudden seems to pick up again. well today finally it loss all power nd noise got louder. tomorrow im trouble shooting the code that came up but is naything possible at this time?

 

what's the code or won't you know it until tomorrow?

 

Hard to say until you get the code. Engines are noisy lol gotta be a lil more specific...

 

I would guess MAF and timing chain tensioner.

 

he said noise from timing chain area. Thats passenger side....hmmmm. Tensioner is probably right. The intermittent power is tough. Dirty EGR? Dirty IACV? Dirty throttle body? Most likely MAF though. Those buggers are fickle

 

K well code called for misfire check plugs nd two of them where worn down badly... Clean mass air new fuel filter. Nd car has no light no more but there's the anoying sound and rpms lag! It's pretty bad what else could it be? Thanks

 

IN neutral car won't even pass 2900 rpms

 

Just out of curiosity: have you tried the free stuff? (wiping the crank sensor [POS] clean of [most] metal shavings, primarily)

I only ask because I had no check engine light and a ton of hesitation/lag earlier this year when I did my rocker cover gaskets, didn't expect it but it turned out to just be a dirty CKPS (POS)... worth a shot if you haven't tried it yet.

 

No haven't tried the crank sensor. I'll check that next thanks everyone for the input

 

okay so replaced mass air and cleaned crank sensor and still same problems now im goin to jus go head and also replace camshft position sensor. is there anything else i should be looking at? car trys to fix it self but still cant bring the rpm up after driving it couple blocks down??

 

have you gotten low on fuel lately? sometimes you can get dirt and debris in ur injectors and cause it to do exactly whats going on i had this happen to me sucked i had to pull every injector and clean them out but worked like a charm!! id try some fuel treatment first

 

so replaced cam pos sensor and helped but car now has a hard start and still has the lag!!... and thanks will pull injectors and clean them but is there a exact way to do it?? and going to clean my egr too..

 

well first shut car off and and pressurize fuel system by undoing battery and opening fuel tank. theres also a valve up by ur injectors looks like the valvle u air up ur ties with to insure all pressure is released. do that the just pull them out some are hard to get to once you look you will understand

 

yea i see the front ones lol but rears yeeaa.. but ill try that next hopefully helps. thanks

 

okay so did the code again and is still saying it needs cam postion sensor??

 

sometimes it takes awhile to clear the code. It doesnt instantly go away. Might take 2 days

 

front injectors u will have to take top intake off yea it sucks but could fix your problem.. just need a gasket really do ur front ones first and see if theres a difference

 

Maybe the tensioner rattle is setting off vibrations that's being picked up by your Knock sensor!

 

So now car won't start only cranks nd it almost seems as I f the car was gettin no air?

 

hold the throttle open and listen if the engine changes pitch while cranking if so its sucking in air just fine

as for the noise i have a rattle type noise and for the longest time i thought it was the timing chain tensioner cuz its common on the max but i was wrong i asked to barrow a stethoscope from the master tech at work and found this noise http://www.youtube.com/watch?v=Ykzzu0LgsIs was not the tensioner but the alternator bearings

12 seconds is when you hear it the best this is not my car but the noise is the same

 

reading through the thread again it seems like more of a problem than just the cam pos sensor. If it wont crank then its not just a bad cam sensor. Does it crank? sound like it wants to start? or you turn the key and nothing?

 

Okay will check that. But when is cranking it gets to a point that it seems like it's goin to start but nothing and was tryin to record to noise nd posted it but have a no start now.

 

Post the crank throttle open and closed

 

so whend i pulled iac and throttle body they were completly covered up. Bad pcv vavle was replaced now since car had to move from where i had it... put everthing to together crossing my fingers she would start. Started like brand new engine? then check inside to seee if engine light was still on since car sat with out a battery, light was still there. now the weird thing was when i shut the car off and turn it back on after couple minutes of being on it started to have a misfire??? then it will go away but everytime i started it it comes. the weird thing is that the first noise that i thought i heard from chain is gone?? lol so tomorrow im going to pull everything off again and clean egr cus is making a funny noise from the area is it suppose to?
so yeah ill update as soon as i can.

 

K well pull off complete intake and found a connector right under lower intake with nothin connected to it? Is this normal?

 

Sounds like your knock sensor isn't connected. Read this thread and tell us if it's the knock sensor:

http://forums.maxima.org/4th-generat...-tutorial.html

Without the knock sensor connected the engine will feel like it's misfiring.

 

A connector or a tube? That tube isnt connected to anything. Its on every 4th gen. its a tranny breather hose. dont do anything with it. If its a connector then yea that should be plugged into something lol and you probably found your problem

 

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this is how it looks like... there is nothin near it to connect it to..? it looks like it has been disconnected it for a while? and never had the light on before

 

hahah okay so it is the knock sensor... now question is where is the connnector suppose to come from? cus i do not see one anywhere near? thanks for the input i really appreciated it

 

There should be a black plug located right at the A/T dipstick. There should be a harness going from that plug to the knock sensor. If it is not there, get one from JY or dealer.

 

I would get a new knock sensor since you can get at it so easy..10$ on eBay. Someone obviously disconnected it trying to fix the problem so it is probably bad as well. Hope you don't have more serious problems by someone disconnecting it. A bad ks will not trigger the check engine light by itself and is usually found when something else is bad. Here are some pics of where the wires go to...driver side by the intake. First pic is from the front of the car and the second is standing over it. Hope this helps. Not the best pics but it should get you in the right area.

 

okay i think i found the main problem some idiot decided to take a shortcut and instead of replacing the knock sensor just added a new one knock sensor and placed it on the fuel rail... now the wire seems to have been messed with also im pretty sure this is not normal but here the pics

 

http://imageshack.us/g/838/0115120848.jpg/

 

so just as an update.. car ran good for a week then the stupid chain skipped and now im pretty sure vavles got bent. now how easy is to pull this engines out?