The Code Is Back P0101
Thread Starter
Race Director
Joined: Apr 2004
Posts: 16,135
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From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
The Code Is Back P0101
I recently installed heads and cam on my 2000 coupe and had things dyno tuned and the only code I throw is the P0101. I am not loosing any performance or anything, but the code just continues to pop up regularly.
Well, I took some time and clean out my MAF (which has been descreened and added high performance MAF housing) and I cleaned the sensor that runs to my air bridge and for a day it was cool, but it is back.
So, I am thinking that maybe I should just try and get a stock MAF with a screen and try that. EG told me that I should get a stock air bridge, but I spent some good money on the bridge I have, so I am really wanting to keep it.
I was also thinking that maybe I could trade my current MAF and airbridge for the stock setup and maybe a little cash.
Any ideas or recommendations?
Thanks in advance,
Micah
Well, I took some time and clean out my MAF (which has been descreened and added high performance MAF housing) and I cleaned the sensor that runs to my air bridge and for a day it was cool, but it is back.
So, I am thinking that maybe I should just try and get a stock MAF with a screen and try that. EG told me that I should get a stock air bridge, but I spent some good money on the bridge I have, so I am really wanting to keep it.
I was also thinking that maybe I could trade my current MAF and airbridge for the stock setup and maybe a little cash.
Any ideas or recommendations?
Thanks in advance,
Micah
Racer
Joined: Jul 2001
Posts: 386
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From: Round Rock, Texas, USA
Do you have any scanning/tuning software? It would be interesting to see the IAT, MAP, MAF, and Dynamic Air values when the DTC is being set. P0101 is a little tougher than a P0102 or P0103 because the latter usually represent a problem specifically related to the MAF circuit.
Unfortunately, P0101 can be thrown due to other problems that are related to the MAP sensor as well. You need to determine/ensure that both the MAF and MAP (and IAT) are functioning properly. If you have a scanner, we can review a log file to compare how each is functioning. You also need to double check for intake manifold leaks, vacuum leaks, and good working PCV. All of these can contribute to this DTC.
Unfortunately, P0101 can be thrown due to other problems that are related to the MAP sensor as well. You need to determine/ensure that both the MAF and MAP (and IAT) are functioning properly. If you have a scanner, we can review a log file to compare how each is functioning. You also need to double check for intake manifold leaks, vacuum leaks, and good working PCV. All of these can contribute to this DTC.
Thread Starter
Race Director
Joined: Apr 2004
Posts: 16,135
Likes: 5
From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
Originally Posted by TXNC5
Do you have any scanning/tuning software? It would be interesting to see the IAT, MAP, MAF, and Dynamic Air values when the DTC is being set. P0101 is a little tougher than a P0102 or P0103 because the latter usually represent a problem specifically related to the MAF circuit.
Unfortunately, P0101 can be thrown due to other problems that are related to the MAP sensor as well. You need to determine/ensure that both the MAF and MAP (and IAT) are functioning properly. If you have a scanner, we can review a log file to compare how each is functioning. You also need to double check for intake manifold leaks, vacuum leaks, and good working PCV. All of these can contribute to this DTC.
Unfortunately, P0101 can be thrown due to other problems that are related to the MAP sensor as well. You need to determine/ensure that both the MAF and MAP (and IAT) are functioning properly. If you have a scanner, we can review a log file to compare how each is functioning. You also need to double check for intake manifold leaks, vacuum leaks, and good working PCV. All of these can contribute to this DTC.
Micah
Racer
Joined: Jul 2001
Posts: 386
Likes: 0
From: Round Rock, Texas, USA
There have certainly been many people with problems that have altered their MAF's (either de-screening, ends, porting, etc). IMO, people have had better luck simply upgrading to a newer MAF.
I know you say you are not suffering any performance loss, but you want to be careful. If the MAF is reading too low, then you could go lean and that does not bode well for WOT. If it reading too high, then you are not likely to suffer anything catastrophic at WOT, but running too rich has its own negative effects. If your VE table has not been tuned after your modifications, I would be more concerned about the PCM's ability to achieve a targeted AFR. Here is some good diagnostic info (in case you haven't seen it).
FYI, I would ask 'how' they plan on tuning it out. They might only change the DTC to not set the MIL, but I wouldn't do that for reasons mentioned above. Hope you get it resolved.
I know you say you are not suffering any performance loss, but you want to be careful. If the MAF is reading too low, then you could go lean and that does not bode well for WOT. If it reading too high, then you are not likely to suffer anything catastrophic at WOT, but running too rich has its own negative effects. If your VE table has not been tuned after your modifications, I would be more concerned about the PCM's ability to achieve a targeted AFR. Here is some good diagnostic info (in case you haven't seen it).
FYI, I would ask 'how' they plan on tuning it out. They might only change the DTC to not set the MIL, but I wouldn't do that for reasons mentioned above. Hope you get it resolved.
Last edited by TXNC5; Feb 20, 2006 at 11:28 AM.
Thread Starter
Race Director
Joined: Apr 2004
Posts: 16,135
Likes: 5
From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
Originally Posted by TXNC5
There have certainly been many people with problems that have altered their MAF's (either de-screening, ends, porting, etc). IMO, people have had better luck simply upgrading to a newer MAF.
I know you say you are not suffering any performance loss, but you want to be careful. If the MAF is reading too low, then you could go lean and that does not bode well for WOT. If it reading too high, then you are not likely to suffer anything catastrophic at WOT, but running too rich has its own negative effects. If your VE table has not been tuned after your modifications, I would be more concerned about the PCM's ability to achieve a targeted AFR. Here is some good diagnostic info (in case you haven't seen it).
FYI, I would ask 'how' they plan on tuning it out. They might only change the DTC to not set the MIL, but I wouldn't do that for reasons mentioned above. Hope you get it resolved.
I know you say you are not suffering any performance loss, but you want to be careful. If the MAF is reading too low, then you could go lean and that does not bode well for WOT. If it reading too high, then you are not likely to suffer anything catastrophic at WOT, but running too rich has its own negative effects. If your VE table has not been tuned after your modifications, I would be more concerned about the PCM's ability to achieve a targeted AFR. Here is some good diagnostic info (in case you haven't seen it).
FYI, I would ask 'how' they plan on tuning it out. They might only change the DTC to not set the MIL, but I wouldn't do that for reasons mentioned above. Hope you get it resolved.
