"Bank 1 and 2 too lean?"

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Old 12-29-2010 | 04:30 PM
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"Bank 1 and 2 too lean?"

hey guys....i have allready posted about this tread...my 04 tl had its check engine light on...i checked it out and it was bank 1 and 2 too lean....so i decided to take it to acura yesterday and pay the $105 to have it diagosted....they had the car for almost the whole day....they came to the conclusion that the map sensor was reading low and causing it to throw the codes but also said i need a valve adjustment...i have 127k on it...
my question to you guys is that do you think i should buy a new map sensor and see if it fixes my problem or pay the $430 for the valve adjustment?....if anyone has any input i would appreciate it...thanks
Old 12-29-2010 | 06:22 PM
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Well regardless you still need to do the adjustment. But what code exactly is it throwing P1071? If so I know there was a recall for the ecu pertaining to this issue I had mine changed but I still get the code from time to time. Acura headquarters linked the issue to the gasoline. They are still have cars throw this code even after the ecu change.
Old 12-29-2010 | 06:24 PM
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Just a little history:

Originally Posted by bluetl04
well...i did my tranny fluid change and let me tell you....its a big difference..i dont know if it was ever changed since i bought the car with 75k and didnt change it till now....also changed the two secondary o2 sensors and that has solved my problem...i did 75 miles so far and my needle didnt move from the f yet....hopefully my issue has been solved....i wanna thank everyone for helping me out...
Originally Posted by I hate cars
It didn't fix his problem. If trans slippage was causing it, the trans would be completely out by now. There would've been HUGE signs the trans was going out. He's basing the car being fixed on "driving 75 miles and the needle didn't move from the f yet". No evidence at all, it just means it was topped up well. We know his mileage is lower than normal yet he can't post what his average mph is for some reason so there's no way to know if it's out of the normal range.
Originally Posted by bluetl04
my car is a 6 speed not a automatic...i wasnt refurring to the tranny fluid change that solved my problem....i was refurring to the 2 secondary o2 sensors that i changed that fixed my issue
Secondary 02s have nothing to do with the way the engine runs, they only check catalyst efficiency so I knew you were imagining things.

I'm not making any more suggestions because you would not answer questions and pretty much did the opposite of what everyone told you in the other thread. We could have solved it back then if you had been more cooperative.
Old 12-29-2010 | 07:20 PM
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IHC....Good example of why I toss threads I once reply into....
No one listens, no one cooperates, and everyone is looking for a magic bullet with no effort on their part. People don't seem to wanna help others (us) in order to help themselves.
Old 12-29-2010 | 07:52 PM
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Originally Posted by bluetl04
hey guys....i have allready posted about this tread...my 04 tl had its check engine light on...i checked it out and it was bank 1 and 2 too lean....so i decided to take it to acura yesterday and pay the $105 to have it diagosted....they had the car for almost the whole day....they came to the conclusion that the map sensor was reading low and causing it to throw the codes but also said i need a valve adjustment...i have 127k on it...
my question to you guys is that do you think i should buy a new map sensor and see if it fixes my problem or pay the $430 for the valve adjustment?....if anyone has any input i would appreciate it...thanks
Did they find a P0107, P0108, P1128, or P1129 code? If not, they're grasping at straws...and yes, valve clearance alone COULD be the cause of the lean codes. I'd ask them why they want to replace the MAP sensor when there were no MAP sensor codes present and watch their "deer in the headlights" stare....(I'm going out on a limb and assuming there were no MAP sensor codes). I also assume they verified that fuel pressure was normal?

Here's what I'd do: If fuel pressure was normal and if there were no MAP sensor codes, just the P0171/P0174, I'd take it to a Honda dealer (or an Indy mechanic) and get the valve adjustment done cheaper and see if that fixes the lean condition. At 127K miles, you're well overdue to have this done anyhow.

And next time, please don't start a new thread.

Mods, maybe merge his threads??
Old 12-29-2010 | 08:01 PM
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Originally Posted by nfnsquared
Did they find a P0107, P0108, P1128, or P1129 code? If not, they're grasping at straws...and yes, valve clearance alone COULD be the cause of the lean codes. I'd ask them why they want to replace the MAP sensor when there were no MAP sensor codes present and watch their "deer in the headlights" stare....(I'm going out on a limb and assuming there were no MAP sensor codes). I also assume they verified that fuel pressure was normal?

Here's what I'd do: If fuel pressure was normal and if there were no MAP sensor codes, just the P0171/P0174, I'd take it to a Honda dealer (or an Indy mechanic) and get the valve adjustment done cheaper and see if that fixes the lean condition. At 127K miles, you're well overdue to have this done anyhow.

And next time, please don't start a new thread.

Mods, maybe merge his threads??
It's very unlikely that needing a valve adjustment can have any effect on AF. If they're bad enough that you're getting a misfire it would show up as a false rich.

If the live data could show a ripple somewhere in the MAP scale you can have a bad MAP without any codes but from the sound of it, they're just throwing parts at it and hoping it fixes the issue.

All that would be needed is to look at the long term fuel trim and it would tell the story and eliminate some variables.
Old 12-29-2010 | 08:26 PM
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Just taking him through the process of elimination for something he needs done anyhow before spending $$ on possibly unneeded additional parts...

Thought you were done with this thread???
Old 12-29-2010 | 08:36 PM
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Originally Posted by nfnsquared
Just taking him through the process of elimination for something he needs done anyhow before spending $$ on possibly unneeded additional parts...

Thought you were done with this thread???
I'm trying, it's just so hard lol.
Old 12-29-2010 | 09:35 PM
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^ HAHA... ur a sucker for some one in need. LOL

Although as someone with as much experience as IHC, I would want to share my experience too...... MY HUMBLE ADVICE : OP LISTEN TO THESE GUYS. They know their shite. Although it may seem like a hassle to go ask for those codes. Do it. YOU'L SAVE IN THE LONG RUN.
Old 12-30-2010 | 12:17 AM
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Hey, OP, in your first post in the other thread you said this all started after replacing the air filter (among other items).

Just a thought (and it's a long shot)...Is there any chance the MAP sensor connector got knocked loose? If you get your car back, check it....

Old 12-30-2010 | 03:21 PM
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Originally Posted by I hate cars
It's very unlikely that needing a valve adjustment can have any effect on AF. If they're bad enough that you're getting a misfire it would show up as a false rich.

If the live data could show a ripple somewhere in the MAP scale you can have a bad MAP without any codes but from the sound of it, they're just throwing parts at it and hoping it fixes the issue.

All that would be needed is to look at the long term fuel trim and it would tell the story and eliminate some variables.

Exactly the long term fuel trim and a big can of carb cleaner will tell you wether or not you have a leak which is probable in a returnless fuel system
Old 12-31-2010 | 08:24 PM
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i answered all of ur questions to the best of my knowledge....i dont know too much so thats why im asking ppl on here....but if you guys wanna keep talking talking shit...go for it....maybe you guys get off on that....
..........but for those of you who are willing to help me....the two codes that came up were p1071 and p1074....bank 1 and 2 too lean....and yes i made sure the map sensor connector was tight...
....but since the dealer said that the map reading was under normal....i am just gonna buy a new map sensor....since its the cheapest route rite now...
......but thank you for those that are helping....
.....happy new year to everyone.....
Old 12-31-2010 | 11:54 PM
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Originally Posted by bluetl04
i answered all of ur questions to the best of my knowledge....i dont know too much so thats why im asking ppl on here....but if you guys wanna keep talking talking shit...go for it....maybe you guys get off on that....
..........but for those of you who are willing to help me....the two codes that came up were p1071 and p1074....bank 1 and 2 too lean....and yes i made sure the map sensor connector was tight...
....but since the dealer said that the map reading was under normal....i am just gonna buy a new map sensor....since its the cheapest route rite now...
......but thank you for those that are helping....
.....happy new year to everyone.....
No one is talking shit. You rerused to listen to anyone in the other thred or answer a question that I asked 3 times. I told you the problem was not solved in the other thread. It gets frustrating on my end. Where's the incentive to help when you won't listen?

FWIW I think replacing the MAP is your best bet. The problem here is you're letting them get away with improper diagnosis and then charging you for their incompetence. If they misdiagnose its on them.
Old 12-17-2014 | 12:21 PM
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I'm having the same problem what was the fit???
Old 12-17-2014 | 03:50 PM
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When i worked for acura we had couple of tl's come in for a lean code .when we called acura tech support first thing they said is if the fuel pressure is in spec then to perform a valve adjustment
Sure enough those codes never came back
So i would go with a valve adjustment first . 2nd step would be injectors
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