Mass Air? Oxygen Sensors? What Could It Be?

vristang · 02-03-2006, 02:57 AM

I have had problems with the mixture that were solved by replacing the O2s, but never saw an engine code.
Not saying it will work for you, but sometimes bad O2s don't throw codes.

Cleaning the maf as described above is a very good place to start. I would use Brake Cleaner though, as it will not leave ANY residue behind, unlike most solvents.

jason

redsn95vert · 02-03-2006, 07:51 PM

Another thing to worry about is, if both O2s are bad and are throwing codes, they may not be the problem, usually if they both throw codes, it means it's a bad MAF.

02-03-2006, 02:57 AM	#1
vristang Registered Member Join Date: Feb 2006 Posts: 50	Re: Mass Air? Oxygen Sensors? What Could It Be? I have had problems with the mixture that were solved by replacing the O2s, but never saw an engine code. Not saying it will work for you, but sometimes bad O2s don't throw codes. Cleaning the maf as described above is a very good place to start. I would use Brake Cleaner though, as it will not leave ANY residue behind, unlike most solvents. jason __________________ Check out my new Mustang website! - Including: TwEECer, EEC-IV, C&L, 351w Fox Swaps, PCV Oil Control, and more. 1990 GT - 408w - 17mpg TwEECer RT 1.30A10 - X3Z - A9L strat. / EA Forged Bottom End / Gapless Rings / CR 8.85:1 / Custom Cam / Ported Trick Flow Heads / Box Upr / Lightning Lwr 17x9 Cobras / Front 255s / Rear 275s / 5 Lug Cobra Disc Conversion / Auburn Ltd. Slip / 3.27 / 31 spline axles / Panhard Rod / Upr&Lwr Control Arms 1987 Red LX - 2.3L - Planning 2.3t Converison

02-03-2006, 07:51 PM	#2
redsn95vert Registered Member Join Date: Jul 2000 Location: Rochester Posts: 323	Re: Mass Air? Oxygen Sensors? What Could It Be? Another thing to worry about is, if both O2s are bad and are throwing codes, they may not be the problem, usually if they both throw codes, it means it's a bad MAF. __________________ 95 GT convertable, ported+polished GT40 heads, port matched upper and lower Cobra intake manifold, Flowthech headers, Catco hi-flow h-pipe with 2 hi-flow cats, Mac true fit catback exhaust, 3.73 gears, underdrive pullies, Edelbrock 70mm throttle body, Mac cold air intake, FMS 24lb injectors, Granatelli 75mm mass air

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