1995 5.0 Running Lean

jcc1991 · September 6th, 2006, 03:31 PM

I have a 1995 GT 5.0 that is running rough. The codes keep telling me that each bank is too lean or that the O2 sensor is not switching. I put in new O2 sensors and even a MIL eliminator and still no help. What else could it be? It also starts to knock and ping after it gets good and warmed up so it is definately running lean.

mdvaldosta · September 6th, 2006, 03:59 PM

You didn't put MIL eliminators on the front 02 sensors did you?

jcc1991 · September 7th, 2006, 08:39 AM

Yes I did. That must be bad or you wouldn't have said that.

Autotech · September 7th, 2006, 10:58 AM

the o2 eliminators are for 96 and up, to be placed on the rear 02 sensors ONLY!!!! It is impairative that the front 2 be functional!!!!!!! this is what tells the computer to rich ' en the fuel mixture and the pulse width...If there is no switching and you know they are good o2 sensors, check the ground and check for voltage.

September 6th, 2006, 03:31 PM	#1
jcc1991 Newbie Join Date: Sep 2006 Posts: 5 iTrader: 0 reviews	1995 5.0 Running Lean I have a 1995 GT 5.0 that is running rough. The codes keep telling me that each bank is too lean or that the O2 sensor is not switching. I put in new O2 sensors and even a MIL eliminator and still no help. What else could it be? It also starts to knock and ping after it gets good and warmed up so it is definately running lean.

September 7th, 2006, 10:58 AM	#4
Autotech Regular Join Date: Aug 2006 Posts: 79 iTrader: 0 reviews	the o2 eliminators are for 96 and up, to be placed on the rear 02 sensors ONLY!!!! It is impairative that the front 2 be functional!!!!!!! this is what tells the computer to rich ' en the fuel mixture and the pulse width...If there is no switching and you know they are good o2 sensors, check the ground and check for voltage. __________________ www.freeautomechanic.com

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September 6th, 2006, 03:59 PM	#2
mdvaldosta MM Fanatic 2002 Mustang GT 11.47@120.58 Join Date: Aug 2005 Location: Valdosta, GA Posts: 3,940 iTrader: 0 reviews	You didn't put MIL eliminators on the front 02 sensors did you?

September 7th, 2006, 08:39 AM	#3
jcc1991 Newbie Join Date: Sep 2006 Posts: 5 iTrader: 0 reviews	Yes I did. That must be bad or you wouldn't have said that.

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