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Problems with fueling! P0106 MAP code with KB

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Old Nov 19, 2012 | 03:21 PM
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Default Problems with fueling! P0106 MAP code with KB

Having fueling issues after the car has set up for a while. I'm having problems with my O2 sensors and my 1153 code which I'm troubleshooting now but while I was checking codes I see that the P0106 is in there as a history code but I know I've cleared that out recently.
My question is I can't remember if I've always had that code there or it is something new???
Is it normal to have that code with a KB supercharger?
It's the standard Map sensor and I'm running around 12.5 PSI.
I went back and looked at a log file and it runs from 29kpa to 104kpa.
I thought I remember the high range was around 95??? I can't remember though...
MAF tuned car. TKS!!
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Old Nov 19, 2012 | 03:31 PM
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Originally Posted by Scooter1964
Having fueling issues after the car has set up for a while. I'm having problems with my O2 sensors and my 1153 code which I'm troubleshooting now but while I was checking codes I see that the P0106 is in there as a history code but I know I've cleared that out recently.
My question is I can't remember if I've always had that code there or it is something new???
Is it normal to have that code with a KB supercharger?
It's the standard Map sensor and I'm running around 12.5 PSI.
I went back and looked at a log file and it runs from 29kpa to 104kpa.
I thought I remember the high range was around 95??? I can't remember though...
MAF tuned car. TKS!!


Sounds like the car needs some tuning
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Old Nov 19, 2012 | 03:35 PM
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Eng diag/air flow tab you have P0106 min and max. You have to set these tables up or it will trip the code

No switching could be bad 02 sensor or maxed out fuel trims
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Old Nov 19, 2012 | 03:42 PM
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Well I've been running with the same tune for over 2 years. Mike Norris did the tune for me back when he was still down in Florida... So it may have been longer than that....I believe him to be a well respected tuner on here..... I've just started having fuel problems. When I first went under the car to look at the O2's the one on the left bank had shorted out against the header. I replaced this harness(not repaired) but still getting the 1153. Actually it was 1133 and 1153 before...
Plus! I have a wide band in the left header and it is reading very lean!
21-22 unless I go into boost then it goes down to close to commanded afr.
The module for it got hot too so I'm hoping that there's just something wrong with the Wideband. Black soot all over the back of the car!!
Wow what a mess!!!lol
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Old Nov 19, 2012 | 04:53 PM
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Sounds like the WB (sensor or controller) is FUBARed. P0106 could be because of altitude change after moving but FL is sea level so I wouldn't think boost would go up. Maybe due to colder temps, more boost, maybe your P0106 table was on the edge but unless you have a 2+ bar MAP then that code should be disabled anyhow as the stock 1 bar MAP can't read boost. 1133 and 1153 are common when O2's are placed in long tubes and switch lazily. And even more prevalent with a KB or whipple, not sure why. Disable those too or if the narrow bands are old, replace them.

Last edited by 5 Liter Eater; Nov 19, 2012 at 04:56 PM.
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Old Nov 19, 2012 | 06:05 PM
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O2's are new. (Bosch). I put them in when i started having problems even though I wasn't sure the old ones were bad.... I do know that the 1133 and 1153 occasionally pop up with the long tubes but it was usually just occasionally. The 1153 comes on pretty quick now. I clear the codes then start and drive the car for 15 or 20 minutes and its back.
Been looking at my manual and think my next step is to check the high signal wire on the bank 2 side to see if it may be grounded out???
What does the fuel do if the 02's malfunction?
Does it go to a pre-defined table or what is the default for that??
I did order a new wide band today though so if the old one is junk I can replace it or if not I'll put the new one in the other header I guess.
Back to the Map sensor.. I looked at my tune and the table highs are set at 105kpa. Can I change that value and if so what to or what difference would it make? i suppose it won't make any difference though correct...
I'm starting to think I should just go SD????
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Old Nov 26, 2012 | 12:46 PM
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I'd scan it and see what the narrow bands are doing. If they are flatlining or just being lazy. 1133/1153 would indicate they are just lazy. If either one of the narrow bands are not working then the tune would default to open loop which means the MAF table defines the fueling without any correction happening from the narrow band feedback. So depending on how good or bad the tune is, it could run slightly rich or lean all the time or it could run extremely rich or lean all the time.

There is no way to increase the max MAP value on an '01 without adding a 2+ bar custom OS and MAP. P0106 should be disabled with a stock MAP as you're going to be exceeding 105 kPa every time you go into boost.
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Old Dec 3, 2012 | 11:03 PM
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My friend I had this issue one year before on my C6 ZO6 and I can show you what to do if you can use the HP tuner.


upload pic

Last edited by lingenfelter200; Dec 3, 2012 at 11:13 PM.
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Old Dec 4, 2012 | 09:36 AM
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update. The 106 is turned off so no light will come on but it just shows up when I scan for codes.
I installed a new Wideband and that was the major problem.
the NB's are switching but like you said just a little lazy. the only code I get consistantly now is the 1153. Its just that it is a new development as it ran for a long time and never threw the code.
So new WB installed and I am back close to Stoich. I haven't logged it yet because I have to go back and remember how to get everything set up to read through the A/C switch.
I'm still getting a lot of carbon or black crap built up on the back of the car though.
Another question? The code is for the right bank but my wide band is only in the left header. Could it be that the right side of the motor is running rich and yuking up the back of the car?
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Old Dec 4, 2012 | 01:25 PM
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Originally Posted by Scooter1964
update. The 106 is turned off so no light will come on but it just shows up when I scan for codes.
I installed a new Wideband and that was the major problem.
the NB's are switching but like you said just a little lazy. the only code I get consistantly now is the 1153. Its just that it is a new development as it ran for a long time and never threw the code.
So new WB installed and I am back close to Stoich. I haven't logged it yet because I have to go back and remember how to get everything set up to read through the A/C switch.
I'm still getting a lot of carbon or black crap built up on the back of the car though.
Another question? The code is for the right bank but my wide band is only in the left header. Could it be that the right side of the motor is running rich and yuking up the back of the car?

Can you change the ECT?

I hope that will be enough to stop the DTC's.
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