well, i got some bg44 TB cleaner and i sprayed it in the TB to clean it out. Now im getting code p1102. i also noticed my idle now at 900-1000 rpms compared to 600-650 (im a 6MT) please help!! what went wrong?

 

Just a question, where exactly did you spray into to clean the TB out, as from what I read the p1102 code has to do with a problem with you MAF sensor

 

all i did was pull off the intake tube to acces the TB. i made sure not to touch the butterfly, i had somone in the car rev it up as i sprayed the bg44 TB cleaner inside. but as soon as he started the car the check engine light came on.

 

I asked the question to determine if you had spray in the tube perhaps in front of the MAF sensor as it sounds like you may have a bad thermistor which is part of the MAF sensor for measuring heat of the air passing through it. I think you are going to have to replace the MAF (call Dave B.) Perhaps some of the guys may have something else to add or check, as I am going on what I can read about the code and if you do a search right here on site you may draw the same conclusion. ... sorry to hear but its what I am leaning towards.

DTC: P1102

Component Description
The mass air flow sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the ECM. The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.

DTC detecting condition:

• A voltage from the sensor is constantly approx.1.0V when engine is running.

Possible cause:

• Harness or connectors (The sensor circuit is open or shorted.)
• Mass air flow sensor

 

so if i get a new MAF from dave B, should i bring it to nissan to have them reset the ecu and do idle relearn with the consult?

 

If you are going to replace the MAF be sure to have the exact part number for Dave and you will most likely need to have the ECU reset ... here is an older thread I also was reading only has a couple of posts but you might get away with replacing the thermistor which is part of the MAF sensor as this chap did ... http://forums.maxima.org/5th-generat...ighlight=P1102 ... sorry to give bad news, but like I said this is what I read about the problem ... give a few more of the guys a chance to jump in on this as I am by no means an expert on such things, but I do like to read and try to understand how or what may have gone wrong.

 

ok thanks for your help. im so aggravated right now. i try to do good and something bad happens. UGGHHH

 

I hear ya on trying to something good ... I have read a bit on the bg44 TB cleaning process and have pick up some seafoam instead but have not used it yet, I will suck approx 1/3 of the can up through the master brake hose to clean the inside of the TB and then go for an oil change as it will thin the oil down ... as for your code P1102 if you have someone near by that can clear the code first and then see if the code returns right away to confirm there is a problem ... lets see if a few of the other guys can confirm any of my thoughts before you order any replacement parts

 

i have a hand held scanner and i cleared the code out. i started the car up and it went out, about 30 secs later it went on again. and the idle is a bit higher than normal. i unplugged the batt let sit for 30 mins statred it up, still on. i tried to to the ecu reset procedure a few times, but i cant seem to get it to work

 

So you haven't taken the car for a drive yet, if the MAF is fried you will most likely not be able to get your RPM much over 2500 there will just be no power at all ...

 

One thing I learned on this site, DON'T TOUCH YOUR TB!!!
"it's easy, it's simple" Electronic tb are not friendly. Some people get away perfectly fine, someone can do the exact same thing and throw a cel.. it's aggravating as CRAP!
And you don't need to automatically assume maf.. Does the car drive and rev fine?

 

after i was done spyaying the cleaner in the tb i followed the instructions to let the car idle for 15 mins. in that time the light was on and the car woundnt rev past 2800 rpm. then i shut the car off and the car reved fine, but the light was still on.
i took the car out for a drive (as the directions stated) and the car didnt pull nice until about 4-4400 rpms intil redliine.when im in any gear lets say 1st it feels like its choking intil 4k rpm range then it wakes up

the car drives, but has a very noticable power loss.it reves fine

 

I don't believe That I have made an assumption about the MAF, the particular code that OP has given points directly at the MAF sensor.

You can try some CRC Maf cleaner, disconnect it and take it out and spray the crap out of it ... let it dry and then reinstall, and see if that helps out.
Once you have cleaned the MAF and reinstalled be sure to clear your code to see if the cleaning has helped in any way.

 

i have an update for today, i went and drove my car to a local autozone just to see if the same code came up as last night. on the way there the car pulls nice reves normal. but my ilde is still high.
so when i got to autozone they scaned my car and got the code p0507 (High Idle) they cleared the code out. as of now its still off but should i do the idle relearn process. that was the only code that came up. but last night it was code p1102.. now today its p0507

 

you tripped the MAF code because you started the car and the MAF was not reading any airflow, so the computer assumed the MAF was toast, tripped the code and likely went into limp mode. When you reconnected it the computer was reading voltage fine and went out of limp mode, but the code was already stored. just reset the ECU, do the relearns and learn from the experience

 

ok.so can i just do the idle relearn? or idle relearn then reset ecu?

 

Reset then relearn

 

yep, you should be fine after.

 

if u need the idle relearn p.m me

 

ok, update. i could not get the whole press the gas pedal, key on/off wait dance LOL so i got annoyed and took to a local nissan dealer and they updated my ECU from 16Y300 to 16Y303 and did the idle relearn and checked my MAF. this wound up costing my $270 for that. as soon as i drove out of the dealership i noticed a big diffrence, WOW my car never ran so good. it pulls from 1k-redline even with my 19's it was still chirping 3rd gear!

 

$270 later...

 

What is 16Y300 to 16Y303?

 

[QUOTE=crazy97;7188006]What is 16Y300 to 16Y303?[/Q
16y300 was the old factory program that was stored in the computer, and 16y303 is the new updated program that is now stored in the ECU

 

I don't know if I should start a new thread on this. I'll start by trying a post here.
I recently cleaned my TB and intake manifold and MAF.
I got the Service Engine Soon light, which everyone keeps calling a CEL. (2003 Maxima).
I've gone through the various relearns posted by Maxima Dude (thanks BTW) and the light goes out for awhile but always comes back on.
I've tested for vacuum leaks and can't find any (had some originally and fixed 'em).
Car runs fine. Gas mileage perhaps a little low.
Tried clearing the high idle code at Auto Zone, but light comes back on.
Also, idle keeps going back to 1000-1100 after relearn. Tried disconnecting battery, didn't help.
Any more ideas?
Thanks.