I just recieved my maf today. I installed properly. Unplugging the battery and stuff. The whole process went well and easy. Now thats its in, i was excited to turn on the car. It started then idle back and forth then shuts off ?? WTH ?? My old maf wasn't even as bad. Did I just recieved a blown maf ?I bought it off david b too. I check all the plugs and vaccums. Everything is plugged in right and proper. Do i leave the negative unplugged overnight or something in order for the ecu and stuff get reset. Really confusing the sh*T out of me.

 

I think you have to get the code cleared.

 

How im suppose to do that ??

 

unplug negative for at least 20 minutes

 

I know on the 2k2, unplugging won't clear the code. If you go to Autozone, their tool for checking codes can also clear them.

 

daaamn i had it unplugged for at least a good hour or 2....i guess imma leave it unplugged until tomorrow morning and what seee happends from there. ..

 

I replaced mine and everything went well. I wil tell you if nothing change in the morning, put the old one back.... leave the car running for a while. Disconnect the negative FIRST and re intall the new MAF. If you still have the same problem call DaveB to see if he can replace the MAF for you......

 

Hey does anyone know if Nissan recommends either for or against having a 2002 maxima's throttle body valve cleaned?

 

Yes, but please dont postwhore. Thanks. Also, have a professional do it.

 

umm.....as far as MAF sensors go..........

You dont even have to unplug the battery.

Look on technosquares website for the 350z Ecu reset procedure...works for the 2k2 as well.

Dosent seem like your MAF is the culprit.

 

A professional? All you need is a q-tip and some denatured alcohol.

 

Never heard of denatured alcohol. Is this the one found vodka or gin?
Please explain?

 

http://www.syndel.com/msds/denatured_ethanol_msds.html

 

use throttle body cleaner?

 

That works too. Don't submerge it, just clean with a Q-tip.

 

Now I am left with a bigger problem. I left my keys in my car. It is in the ignition. No spare keys or nothing. ANybody know how to get in our cars w/o a key. Only thing i could think of is smashing the the windows. I have full coverage insurance would that cover it ?? Come to think things cant get any worse and now my dumbass left my keys in my car locked. If not how much does it cost to replace a window..... aaaaagh

 

Spend the $80 or so bucks a locksmith will charge you. It will take them longer to get to you than to unlock the car and write the bill.

p.s. leave the battery disconnected overnight. I once tried to clear my codes while at work and 8 or so hours later they were still in the ECU.

 

why don't you check your vaccuum connections.

 

Sputtering RPMs? I blame throttle body on this one.

 

I don't know if the 5th gens' MAF connector is the same as my 4th gen, but when I installed a new MAF, I had a similar problem. It worked fine for about 10 min and then all of a sudden, it quit on me. The problem? There is a rubber insulator inside the connector (harness) that's supposed to help keep out dirt, etc. For some reason, the rubber insulator kept pushing the connector "away" from the MAF and thus, it wouldn't make a secure connection with the MAF. I simply used a screwdriver to remove the rubber insulator, reconnected it to the MAF, and voila, no problems ever since.

 

My friend who's a honda technician is on his way right now with a slim jim. Hopefully I could get in the car then work on the car. The battery has been unplugged overnite until now. Imma check all the vaccums and take everything apart and redue everything. By the way I installed my berk intake and new MAF both at the same time because they both got shipped here yesterday . Did that effected anything ?? I also took out the VI and weld the spring back on to its spot because it was loosened n broken. I had my friend who is a mechanic that helped and everything seeem like it went perfect.I'm trying to get my car to run at least back to stock form because its been running like **** for the past couple months....

 

I'm not sure if the 5.5 gen has side airbags but if it does be wary using slim jim as I've heard stories of people being injured as a result of setting it off.

Regarding your MAF, my Berk blew my '00 MAF but my updated version has been fine. I'm not sure about the 5.5.

GL

 

Impossible, as both the 5 and 5.5 gen airbags are in the seats.

 

i thought you couldn't lock your doors if the keys are in the ignition?

 

from your other thread here:

http://forums.maxima.org/showthread.php?t=429619



if its misfiring, id take a GOOD look at the coils. good luck.

 

I clearly wrote if it does. I did not know this, now I do.

 

Finally everything is good and running . A good long 3 hours and everything is fixed. I found out that my maf was on backwards. Intead of it flowing to the throttle it was pointed towards the filter. yeaaah thats how stupid i am .To be honest my car feels the same as before. Feel maybe a little gain on the first and second gear. Is it just me or our car lack a lot of top end ??

 

Shouldn't the metal element on MAF should be facing filter in the first place? Correct me if I am wrong, but I think you just put it backwards.. again, or you had it right and put it in backwards.

 

The FLOW arrow is pointing towards the throttle right ?? caause that's what i did and it is running perfectly fine. When i had it pointed towards the filter thats when it was acting up .

 

I don't remember what way arrow points, but it looks like a C-type plastic with metal blade on one side. Air from filter has to hit metal first, so it would be facing filter.

 

I didnt think it would properly secure the wrong way, because if you look at the top of the MAF sensor, looking at the the plug slot, its not symmetrical. its like a trapezoid

 

I know this thread is about MAF sensors, but somebody was talking about cleaning a 5.5th gen throttle body up above.

DO NOT TOUCH THE THROTTLE PLATE ON A 2k2/2k3 model. Our cars have throttle-by-wire, and the tb tends to go haywire if you move the throttle plate while you're cleaning it. Your idle will go high and it will refuse to set properly, and you will get an SES light. 2k/2k1 owners don't have to worry about this.

 

yeah i switched up the metal bracket.. Its right where the filter is , it looks fine and runs good mind as well leave it the way it is , i dont wanna run into anymore problems.

 

Cleaning a 2k2/2k3 throttle body will not have that effect when done properly.

What cleaner did you use? What procedure did you follow to clean it?

 

I didn't say you can't clean the throttle body. I just said don't mess with the throttle plate. Some of the 2000/2001 writeups describe a pretty rigorous cleaning process that involves removing the throttle body from the car and wiping down the interior of the tb and the throttle plate with a rag soaked in cleaner (don't tell me that's not how to do it... I'm just saying that I read about a 2k/2k1 owner doing it that way here on the Org).

You can certainly clean the 2k2/2k3 throttle body. Just don't go threading a rag through it and pulling it out the other side or anything like that. If you change the position of the throttle plate while you are cleaning the tb, it can mess it up. Apparently the throttle by wire system can't figure out the proper position for the throttle plate after somebody touches it and moves it manually, even if the tb is removed from the car and everything is disconnected.

 

I cleaned and moved the throttle plate to clean behind it (jammed it open with a cleaning brush handle). Still works fine 20k miles later.

 

*shrug*

I'm just going by what I've been told by other 5.5th gen owners on the Org, and many of them know more than me. I personally cleaned my TB with a procedure simliar to the one you described. I used throttle body cleaner to get the walls of the tb and both sides of the throttle plate. I propped the plate open while I was cleaning around it. I was pretty gentle with it during the whole process, but after I reinstalled it, my idle would not set properly. I tried all of the ECU reset and learning procedures listed here on the Org, and I even had a local technician (who is an Org member) take a look at it. He said I needed a new throttle body, and several Org members have told me that moving the throttle plate manually is what caused my problem. Your experience changes things... hmm...

 

i cleaned hundreds of e-throttle bodies and have never had a problem. and thats why theres a learn procedure. perhaps it wasnt entering learn correctly...


do you have the old t/b still?

 

The MAF sensor itself goes in one way like you said, but he was refering to the housing. When I ordered the MAF from DAVEB, it came connected to the housing.

 

hmm as far as the throttle play, theres a learn procedure that happens evey time you start or shut the car off.......you'll heare this "click clickkkkkk" noise. and thats it learning.