P0101 code after engine swap
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From: Now in God's Country, the Big Sky, Montana!
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
P0101 code after engine swap
FIXED!
Car is running extremely rich and will throw the P0101 code. I cleaned the MAF and checked for any possilbe vacuum leaks as well as checking the 02 sensors being plugged in. Any ideas?
BTW, car is running 10.8, 11.0 at idle and if I hold it steady at around 2K it will hang around 12.2.
Car is running extremely rich and will throw the P0101 code. I cleaned the MAF and checked for any possilbe vacuum leaks as well as checking the 02 sensors being plugged in. Any ideas?
BTW, car is running 10.8, 11.0 at idle and if I hold it steady at around 2K it will hang around 12.2.
Last edited by Cajundude; Feb 20, 2006 at 12:50 PM.
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From: Now in God's Country, the Big Sky, Montana!
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Pulled the filter out of the VaraRam just in case but no change. Fuel pressure is real high as well. ????? I am running stock injectors right now and do have a base tune for everything.
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From: Now in God's Country, the Big Sky, Montana!
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
MTI G1 in LS2 402. Not that big of a cam at all. I am using an Innovate XD-1 with LC-1.
Melting Slicks
Joined: Jun 2004
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From: Newark, DE
St. Jude Donor '06
A few things come to mind.
1. I believe you have one of the newer style MAFs, with the integrated IAT sensor? If so, make sure the sensor (the little appendage just downstream of the MAF screen) is not broken off or gunked up.
2. Check that you don't have a pinched or shorted wire in the harness feeding the throttle body. In particular, check the white wire.
3. Ensure that you haven't over-tightened the clamps at either end of the air bridge. Doing so can cause it to bow in, and cause an air leak. Actually, an air leak anywhere downstream of the MAF can cause this. So make sure that not only are the air bridge clamps not too tight (or too loose), but check the throttle body to manifold connection as well (you can squirt carb cleaner or water on the joint to check it).
If all else fails, here is the troubleshooting procedure for your model year, which should still pretty much apply to the LS2.
GL!
1. I believe you have one of the newer style MAFs, with the integrated IAT sensor? If so, make sure the sensor (the little appendage just downstream of the MAF screen) is not broken off or gunked up.
2. Check that you don't have a pinched or shorted wire in the harness feeding the throttle body. In particular, check the white wire.
3. Ensure that you haven't over-tightened the clamps at either end of the air bridge. Doing so can cause it to bow in, and cause an air leak. Actually, an air leak anywhere downstream of the MAF can cause this. So make sure that not only are the air bridge clamps not too tight (or too loose), but check the throttle body to manifold connection as well (you can squirt carb cleaner or water on the joint to check it).
If all else fails, here is the troubleshooting procedure for your model year, which should still pretty much apply to the LS2.
GL!
Drifting
Joined: Oct 2003
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From: bloomfield nj
could be the cam,depending on how small your LSA is.the pcm uses the map a a redundant signal to look at the maf.if your running a small LSA and low engine vacuum and the maf is seeing high grams per second[rule of thumb is 1 gram for every liter,ex.6.0L= 6 gps]that will throw your fault.if the cam is not radical,i would go look for a air/vacuum leak after the maf[maf/bridge/throttle housing and gasket,etc],and look at the map sensor and connection.
i'm assuming you let the car do a idle relearn.also what are your fuel trims.if you are on the plus side you are running lean and the pcm is fattening you up.if they are negative you are running rich and the pcm is pulling fuel out.
what is your fuel pressure?you said it's too high.if you have the newer maf i'm assuming your car has the fuel pressure regulator in the fuel filter,not on the rail.
if fuel pressure is too high,you will run fat.if you don't have the right amount of air coming in[or the pcm "thinks" you don't have enough air in] you will run rich.
with the 101 fault i would look at the air intake first.JMO
i'm assuming you let the car do a idle relearn.also what are your fuel trims.if you are on the plus side you are running lean and the pcm is fattening you up.if they are negative you are running rich and the pcm is pulling fuel out.
what is your fuel pressure?you said it's too high.if you have the newer maf i'm assuming your car has the fuel pressure regulator in the fuel filter,not on the rail.
if fuel pressure is too high,you will run fat.if you don't have the right amount of air coming in[or the pcm "thinks" you don't have enough air in] you will run rich.
with the 101 fault i would look at the air intake first.JMO
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Cam is 228 232 .588 .575 on a 115. I'll check for vacuum leaks but I've done that twice already. The only one I did not check is the rear small one right behind the intake. I do remember plugging it in though. I'll check for it for sure.
Map sensor connection should be fine. The plug was cut and I matched/soldered the extension wires to the relocated plug on the front of the LS2.
Can't answer the fuel trim questions yet. One thing I haven't done (yet) is venture into learning the LSX tuning procedures. I just have a base tune that has worked before with my combo.
Fuel pressure is 61-62 and steady there. Double and triple checked the air intake.
Mr. Lucky,
1. 02 Coupe so yes, I have the internal IAT. I do not have one on the air bridge. I have also gently cleaned the wires behind the screen of the MAF.
2. Will do.
3. Have taken it off a few times but will check connections again and also use carb cleaner by the t-body.
Map sensor connection should be fine. The plug was cut and I matched/soldered the extension wires to the relocated plug on the front of the LS2.
Can't answer the fuel trim questions yet. One thing I haven't done (yet) is venture into learning the LSX tuning procedures. I just have a base tune that has worked before with my combo.
Fuel pressure is 61-62 and steady there. Double and triple checked the air intake.
Mr. Lucky,
1. 02 Coupe so yes, I have the internal IAT. I do not have one on the air bridge. I have also gently cleaned the wires behind the screen of the MAF.
2. Will do.
3. Have taken it off a few times but will check connections again and also use carb cleaner by the t-body.
Instructor
Joined: Apr 2005
Posts: 144
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From: Woodlands TX
Originally Posted by Cajundude
Cam is 228 232 .588 .575 on a 115. I'll check for vacuum leaks but I've done that twice already. The only one I did not check is the rear small one right behind the intake. I do remember plugging it in though. I'll check for it for sure.
Map sensor connection should be fine. The plug was cut and I matched/soldered the extension wires to the relocated plug on the front of the LS2.
Can't answer the fuel trim questions yet. One thing I haven't done (yet) is venture into learning the LSX tuning procedures. I just have a base tune that has worked before with my combo.
Fuel pressure is 61-62 and steady there. Double and triple checked the air intake.
Mr. Lucky,
1. 02 Coupe so yes, I have the internal IAT. I do not have one on the air bridge. I have also gently cleaned the wires behind the screen of the MAF.
2. Will do.
3. Have taken it off a few times but will check connections again and also use carb cleaner by the t-body.
Map sensor connection should be fine. The plug was cut and I matched/soldered the extension wires to the relocated plug on the front of the LS2.
Can't answer the fuel trim questions yet. One thing I haven't done (yet) is venture into learning the LSX tuning procedures. I just have a base tune that has worked before with my combo.
Fuel pressure is 61-62 and steady there. Double and triple checked the air intake.
Mr. Lucky,
1. 02 Coupe so yes, I have the internal IAT. I do not have one on the air bridge. I have also gently cleaned the wires behind the screen of the MAF.
2. Will do.
3. Have taken it off a few times but will check connections again and also use carb cleaner by the t-body.
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Thread Starter
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From: Now in God's Country, the Big Sky, Montana!
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Originally Posted by Bink
What tuning software do you have??
Did you change cylinder volume in the PCM to reflect 402 CI ?
Did you change cylinder volume in the PCM to reflect 402 CI ?
Yes, it was.
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Originally Posted by Phil97SVT
Send me your .hpt and I'll take a look at it.
Phil
Phil
Drifting
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From: bloomfield nj
,i thought it would be with the map because your fuel pressure seemed about right and if you had no intake leaks,that's the only thing left that would give you your fault[your cam was too mild]
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From: Newberry FL
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St. Jude Donor '07
I am running the same code after my heads and cam install. I had larger injectors ready for my install and everything was cool until I got about 100 miles on the setup and then I through this code everyday. I checked all of my connections, wires and hoses and things are good, my MAF is descreened and I installed performance housing on the MAF and I think that I need to find myself a stock MAF with the screen (for my year if I can find it), this way I can see how things work.
The thread has some great information and I am going to recheck everything again, but I am planning a trip back to my tuner to have my N20 (never used it) tuned in and my new TC.
The thread has some great information and I am going to recheck everything again, but I am planning a trip back to my tuner to have my N20 (never used it) tuned in and my new TC.
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From: Newberry FL
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St. Jude Donor '07
Originally Posted by mph1972
I am running the same code after my heads and cam install. I had larger injectors ready for my install and everything was cool until I got about 100 miles on the setup and then I through this code everyday. I checked all of my connections, wires and hoses and things are good, my MAF is descreened and I installed performance housing on the MAF and I think that I need to find myself a stock MAF with the screen (for my year if I can find it), this way I can see how things work.
The thread has some great information and I am going to recheck everything again, but I am planning a trip back to my tuner to have my N20 (never used it) tuned in and my new TC.
The thread has some great information and I am going to recheck everything again, but I am planning a trip back to my tuner to have my N20 (never used it) tuned in and my new TC.
Instructor
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From: Seattle Wa
Originally Posted by mph1972
Put a new MAF on and the code went away, but I had a code thown P0175 (H).
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From: Newberry FL
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St. Jude Donor '07
Originally Posted by usnskeet21
Thats just saying your rich on bank 2 arent you tuned rich for nitrous anyways ? I think you still may need a litle more tuning. I wouldnt worry about that one. Atleast no more about the MAF !!
I am going to get things worked out when I go back to my tuner.Thanks again for the MAF!
Micah
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From: Now in God's Country, the Big Sky, Montana!
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Originally Posted by Mr. Lucky
Now enjoy that 402! I do.
