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Old 07-19-2018, 07:47 PM   #26
racecougar
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Re: PCM is not grounding fans properly

So then you're only going to run one fan speed?
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Old 07-19-2018, 07:48 PM   #27
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Re: PCM is not grounding fans properly

Yes. Instead of one kicking on at 195 and the other kicking on at 205 they will both kick on at 205. I suspect it will be fine. Is a manual tranny with no A/C.
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Old 10-24-2018, 11:15 AM   #28
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Re: PCM is not grounding fans properly

Same problem here. One fan works great 2nd fan pulses and relay clicks. 2000 5.3 4L60E swapped into a 72 C10. Don't have ac hooked up but that is why I bought a 2 fan set up. I will update post if I figure it out.
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Old 10-24-2018, 11:29 AM   #29
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Re: PCM is not grounding fans properly

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Old 10-24-2018, 02:17 PM   #30
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Re: PCM is not grounding fans properly

See posts #21 and #23 in this thread on how to correct the issue in the tune file.
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