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		Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Ford Escort \| Ford Laser \| Ford TX3 \| Ford Sierra \| Mercury Capri
'99 Escort check engine light

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Ford Escort | Ford Laser | Ford TX3 | Ford Sierra | Mercury Capri Forum for discussion of the Ford Laser, Ford TX3, Ford Escort, Ford Sierra and Mercury Capri.

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06-21-2006, 11:25	#1 (permalink)
mickeykool Registered User Join Date: Jun 2006 Posts: 2	'99 Escort check engine light I have a 99 Escort and just got a check engine light reading. p1131 - manfacturer controlled fuel and air metering. I have searched this on line and they say, " mass air flow sensor needs replaced" or "O2 senser needs replaced." I only have 140K miles on this car. Any ideas or suggestion?

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06-21-2006, 19:22	#2 (permalink)
leenny Registered User Join Date: Mar 2006 Posts: 5	Re: '99 Escort check engine light Hope this helps. The code P1131- Lack of HO2S11 Switches- Sensor Indicates Lean

06-21-2006, 20:22	#3 (permalink)
Johnny Mullet Hi-Tech Redneck Join Date: Jun 2006 Location: Ashtabula, Ohio Age: 42 Posts: 1,486	Re: '99 Escort check engine light I would change the O2 sensor. Especially if it has that many miles on it.

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