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Having a problem resetting "Check Engine" light

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Old Oct 30, 2017 | 02:16 PM
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oneneedybastard's Avatar
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Default Having a problem resetting "Check Engine" light

1988 F150 4x4 300 inline 6 w/ 5 sp. (OBD1)

Check Engine light will not go out! HAVE A CODE FOR THE ECT SENSOR ON THERMOSTAT NECK, replaced, two analsiers will not clear code. Disconnected battery for 4 days,, MADE THE CONNECTION AND THE LIGHT STILL SLOWS. bugging ME --- help!!!
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Old Oct 30, 2017 | 03:02 PM
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From: Big Easy
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Sounds like the light driver circuit is shorted, check wiring to the pcm for frayed wires touching, if no issue with wiring, probably gonna need a new pcm.
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