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post #1 of 4 (permalink) Old 06-23-09, 10:20 AM Thread Starter
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1986 Ford tempo running rich?

When i start my car and let it sit for a min or 2 there in a black spot left on the ground it smells like gas and it is wet. Its the Tempo Gl2.3l 4cylinder TBI

I also ran auto x ray and it gave me these errors.
Memory Code 41 No exhaust gas oxygen switching detected always indicating lean.
Memory Code 31 EGR valve position or exhaust pressure transducer sensor voltage low.

I replaced the o2 sensor last year and fuel injector 2 years ago. EGR valve was replaced 3 year ago as well.

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post #2 of 4 (permalink) Old 06-23-09, 11:59 AM
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Re: 1986 Ford tempo running rich?

Most likely the black wet spot on your driveway is water condensation from your cold
exhaust system. Normal. If it was liquid fuel your engine would be so rich it would not
run or even start.
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post #3 of 4 (permalink) Old 06-23-09, 12:22 PM Thread Starter
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Re: 1986 Ford tempo running rich?

Thanks . Any idea what Memory Code 41 Means ? Thanks
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post #4 of 4 (permalink) Old 06-23-09, 01:11 PM
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Re: 1986 Ford tempo running rich?

Might be "41 (R) System lean
(M) System was lean for 15 seconds or more (no HO2S switching) ". Still looks like fuel system, or intake. Perhaps a throttle body cleanup.

I feel more like I do now than I did when I got here.

Last edited by jglen490; 06-23-09 at 01:14 PM. Reason: Bad fingers
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