lean question... Important, please read!!!!
Thread Starter
8th Gear
Joined: May 2006
Posts: 8
Likes: 0
lean question... Important, please read!!!!
I have a 2006 C6 manual... About 6,000 miles ago I put the new Vararam intake, a vararam throttlebody spacer, and a B&B bullet exhaust, only those 3 mods (and a 160 degree thermo stat). Every since i put those 3 mods on my check engine light has stayed on. Today i got an OBDII code checker and there are four codes on, the P0171 code twice and the P0174 code twice. According the manual those codes mean my car is running "too lean"... My question is does this sound normal? And can i fix this without getting a tune? Lastly will this brake my car or void my warranty? Any input would be great!!! thanks in advance, Jarrod... (car runs great by the way)
Melting Slicks
Joined: Jul 2006
Posts: 2,136
Likes: 0
From: Stillwater MN
Originally Posted by jesse12804
I don't see how those three things would cause the car to run lean.None of them will void your warranty.Go to the dealer and see what's up.
I also have B&B Bullets, a Vararam intake and a throttle body spacer. I have had no problems.
Le Mans Master
Joined: Dec 2002
Posts: 7,588
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From: Montreal Qc
Originally Posted by Bluedevil3
ok thanks everyone... Iam going to make an appiontment with the dealer...
I think this might save you some aggravation. If there is truely something wrong with your car or the computer, the codes will return and then I would take it to the dealer at that time.
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Michael S. Palmer
Team Owner
Joined: Dec 2003
Posts: 57,408
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From: queensbury ny
Unless your dealer is "one of the good ones", I'm sure they will tell you those mods are the problem. Since you have been living with the codes for a while anyway, I would do this instead....erase the error codes with your code reader and see if they return....which I'd bet they do not.
I think this might save you some agrevation. If there is truely something wrong with your car or the computer, the codes will return and then I would take it to the dealer at that time.
I think this might save you some agrevation. If there is truely something wrong with your car or the computer, the codes will return and then I would take it to the dealer at that time.
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Originally Posted by Miaugi
Unless your dealer is "one of the good ones", I'm sure they will tell you those mods are the problem. Since you have been living with the codes for a while anyway, I would do this instead....erase the error codes with your code reader and see if they return....which I'd bet they do not.
I think this might save you some aggravation. If there is truely something wrong with your car or the computer, the codes will return and then I would take it to the dealer at that time.
I think this might save you some aggravation. If there is truely something wrong with your car or the computer, the codes will return and then I would take it to the dealer at that time.
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Originally Posted by Miaugi
Unless your dealer is "one of the good ones", I'm sure they will tell you those mods are the problem. Since you have been living with the codes for a while anyway, I would do this instead....erase the error codes with your code reader and see if they return....which I'd bet they do not.
I think this might save you some aggravation. If there is truely something wrong with your car or the computer, the codes will return and then I would take it to the dealer at that time.
I think this might save you some aggravation. If there is truely something wrong with your car or the computer, the codes will return and then I would take it to the dealer at that time.
Thread Starter
8th Gear
Joined: May 2006
Posts: 8
Likes: 0
I made an appointment with the dealer for next week... I ve called every performance shop i can think of including Vararam. Unfortunately Vararam didn't answer but iam sure they will call me back, they are great guys. The shops I called said, do not make an appointment with the dealer, wait until you talk to Vararam and see what they say. Otherwise your car will be red flagged. So Iam going to wait until Vararam calls me back.. thanks again for all the input everyone, will keep posting... Jarrod
Drifting
Joined: Jul 2005
Posts: 1,533
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From: az
most likely you have leak in your intake area, my guess is it is after the maf, if that is the case, my money is on vararam spacer. if the code has been with you for 6000 miles, by deleting it and do nothing, it will just come right back, but i guess you have nothing to lose at this point. your maf is reading lower then what the o2 says, which cause your pcm to add additional fuel, that is why you are getting the lean code, this would be my best guess. good luck.
Melting Slicks
Joined: Nov 2004
Posts: 3,064
Likes: 6
From: Pinellas Park Florida
Originally Posted by cbrf4i1
most likely you have leak in your intake area, my guess is it is after the maf, if that is the case, my money is on vararam spacer. if the code has been with you for 6000 miles, by deleting it and do nothing, it will just come right back, but i guess you have nothing to lose at this point. your maf is reading lower then what the o2 says, which cause your pcm to add additional fuel, that is why you are getting the lean code, this would be my best guess. good luck.
That spacer is kinda shaky in its' design and I would try there first. You could have a bad O2 sensor, by the way.
Le Mans Master
Joined: Aug 2004
Posts: 5,259
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From: Monroe Township New Jersey
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
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Originally Posted by cbrf4i1
most likely you have leak in your intake area, my guess is it is after the maf, if that is the case, my money is on vararam spacer. if the code has been with you for 6000 miles, by deleting it and do nothing, it will just come right back, but i guess you have nothing to lose at this point. your maf is reading lower then what the o2 says, which cause your pcm to add additional fuel, that is why you are getting the lean code, this would be my best guess. good luck.
If you want to know for sure take a sensor safe spray cleaner and spray it around the vararam spacer........ if the rpm go up when you spray.... you have found your leak.
Safety Car
Joined: Dec 2004
Posts: 3,565
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
"P0174 OBD-II Trouble Code
Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1.
Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.
A code P0174 may mean that one or more of the following has happened:
[b]The MAF (Mass Air Flow) Sensor is dirty or faulty[/b[. Note: The use of "oiled" air filters (K&N, etc.) can cause the MAF to become dirty if the filter is over-oiled
There could be a vacuum leak downstream of the MAF sensor.
Possible solutions include:
...cleaning the MAF sensor.. ..
... take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
http://www.obd-codes.com/trouble_cod...gen-sensor.php "
Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1.
Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.
A code P0174 may mean that one or more of the following has happened:
[b]The MAF (Mass Air Flow) Sensor is dirty or faulty[/b[. Note: The use of "oiled" air filters (K&N, etc.) can cause the MAF to become dirty if the filter is over-oiled
There could be a vacuum leak downstream of the MAF sensor.
Possible solutions include:
...cleaning the MAF sensor.. ..
... take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
http://www.obd-codes.com/trouble_cod...gen-sensor.php "
Instructor
Joined: Sep 2006
Posts: 148
Likes: 0
From: Norfolk Va
Check around the bottom of the TB and the fresh air line going to the valve cover for leaks.
You can also use an unlit butane torch, while the car is running open it up just enough to get a good hiss and then move it around the area you think have the problem. The RPM's will increase once you find the leak. Also no mess from spraying all over the place.
You can also use an unlit butane torch, while the car is running open it up just enough to get a good hiss and then move it around the area you think have the problem. The RPM's will increase once you find the leak. Also no mess from spraying all over the place.
