86 5.0 running rich

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Nov 8, 2003 | 05:45 PM

coppage54

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Joined: Jul 2003

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86 5.0 running rich

Have 86 5.0 bronco that runs rich replaced map sensor and idle air control still runs rich . Leaking injector Maybe?

Nov 8, 2003 | 08:04 PM

steve83

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Joined: Nov 2002

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From: Memphis, TN

See if there's gasoline inside the red vacuum line to the fuel pressure regulator. Yours will look slightly different from this:

Nov 9, 2003 | 11:57 AM

Norm Carter

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Joined: Aug 2003

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From: Southern California

I've heard that if the coolant temp sensor is bad, the computer might think the engine is cold when it's really warmed up, and might richen the mixture to compensate. I don't know if this is the same coolant temp unit that drives the temp guage, or a different sensor.