Rich on right and left bank - Mustang Evolution

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Old 08-19-2012, 03:38 PM   #1
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Rich on right and left bank

Hey guys I'm at a loss I have codes saying I'm running rich on the right and left bank so I changed my MAF and fuel pressure regulator and still the same codes what else is there I need to change?
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Old 08-19-2012, 03:44 PM   #2
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Re: Rich on right and left bank

Have you checked your O2 sensors and for a leak after the mass air?
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Old 08-19-2012, 03:57 PM   #3
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I haven't checked my o2 sensors but I know there is no leaks around my MAF. How would you check your o2 sensors?
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Old 08-19-2012, 03:59 PM   #4
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Quote:
Originally Posted by Brake.handle
I haven't checked my o2 sensors but I know there is no leaks around my MAF. How would you check your o2 sensors?
Just tighten them !
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Old 08-19-2012, 04:25 PM   #5
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Re: Rich on right and left bank

Quote:
Originally Posted by Brake.handle View Post
I haven't checked my o2 sensors but I know there is no leaks around my MAF. How would you check your o2 sensors?
If you have a scanner..you can snap your throttle,,they should go high on the numbers like 700 or higher millivolts,,then it will go low about 100 millivolts..Not sure what year that is,,but if you have a o2 on each bank,,unlikely both is bad at the same time..Do you have a evap purge on you car,,if you do ive seen them get stuck in the open position..Make sure there is not any air restrictions ,,like the air filter dirty..Is your car idling ok ,,sometimes a stuck idle air can cause that too..I have seen a dripping injector on one side,,cause the computer to throw both sides even though the problem is only one side
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Old 08-19-2012, 05:48 PM   #6
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I have a 97 GT it seems to idle good and it has a brand new air filter but on occasion it will smoke and it smells like oil
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