R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 Got Three codes and need help figuring out why.

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Old Nov 5, 2013 | 11:54 AM
  #1  
GreekDrifter91's Avatar
GreekDrifter91
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5th Gear
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From: CT
Got Three codes and need help figuring out why.

the car feels absolutely fine pedals and cruze control works and i car dosent feel lean or looks lean tail pipes are still black. i hear no vacuum leaks i may try a bottle of propane to look for them at some point. the light came one when i was crusing on the highway

i reverted to back to stock vacuum routing (i had done the VGS mod, didnt like it) other than that i have a DDM intake 17% pulley

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Old Nov 5, 2013 | 12:20 PM
  #2  
GreekDrifter91's Avatar
GreekDrifter91
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From: CT
do you think it could be my O2 sensor(s)? according to my ultra gauge and its manaul i was lloking at the O2 voltage readings and the manual says 0v = 100% lean 1.275v = 99.2% rich.

under full throttle i saw it sit at .8v

How ever at idle i was watching it and it would jump around from .030-.8v it would stick around a certian number then jump to somehting leaner but would never go over .8 i would stay lean for a while then stay in the middle for a while the jump back and forth then some where inbetween..... anyone think its a O2 sensor?
 
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Old Nov 5, 2013 | 04:00 PM
  #3  
ZippyNH's Avatar
ZippyNH
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From: Southern NH
Safe to say you looked at the exhaust (especially any flex connectors)...
Any type of a leak before the cat will toss codes...Beyond that is says short/signal interruption... So I'd check the plugs...could be corroded...or be rubbing...
Other two...not sure... Have a spintboster/clone installed?
Just guessing that the items that "will not cause a light" and not present are saved for future troubleshooting should a problem occur...let's face it...with do many computers, random faults can happen...my suggestion...since the fault is not "active or present"...I'd let that sleeping dog sleep....
 
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Old Nov 5, 2013 | 04:06 PM
  #4  
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GreekDrifter91
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From: CT
I want to but its throwing the CEL and its annoying to see a CEL on my gauge cluster. no I have not looked at the exhaust yet, but the exhaust does sound a bit louder just a bit more growly I though it was because of the pulley, more air and all.

I tried clearing it with my bevtec scanner but it keeps coming back as soon as I start the engine.


and no on the sprint booster stuff
 
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Old Nov 5, 2013 | 05:01 PM
  #5  
AlexQS's Avatar
AlexQS
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From: Near Portland, OR, USA
Originally Posted by ZippyNH
.Beyond that is says short/signal interruption... So I'd check the plugs...could be corroded...or be rubbing...
...
I read somewhere about a guy with codes and o2 sensor problem.... Make sure to check the grounds too
 
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