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service engine soon light code PO125

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Old

Dec 2, 2008 | 06:59 PM

#1

'94Nichols

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From: shawnee, KS

service engine soon light code PO125

my buddy's service engin soon light comes on about every 400 miles. the code reader says "insufficient coolant temp for closed loop fuel control". what does this mean? what needs to be done to fix it?

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Old

Dec 2, 2008 | 09:19 PM

#2

steve(ill)

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normally means the thermostat is bad, or a 170 degree unit was installed. engine is not properly warmup up according to the computer.

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Old

Dec 2, 2008 | 11:11 PM

#3

projectSHO89

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From: St Louis

Replace the thermostat.

Steve

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