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Old 10-13-2007, 11:06 PM
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2.3L what temp?

i have a 94 ranger with a 2.3L. I have installed an electric fan. What does the minimum temp need to be set at. As of now I have the cooling fan cycling on at 175 off at 160. Now it is getting cool outside and when I am running the heat in the truck it is overcooling and I think it is knocking the computer into "open-loop" or warm up mode b/c when the temps get down in the 145-155 range the truck burns very rich and the check engine light comes on most every time this happens. Or could this be another issue? Even with the stock fan the truck has always ran rather cool for a 4 banger. As far as I know the t-stat is stock. I might need to open it up to check and see if there is even a t-stat in it. Any help/suggestions greatly appreciated.
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Old 10-14-2007, 11:29 AM
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I would for sure check that thermostat. It should be a 195║ thermostat as EFI engines are designed to run hotter for more complete combustion. If it's working properly then that fan shouldn't be able to cool the engine down to 150║ or so.

And I would set it to come on at around 200║, off at 195║. I like a manual override switch on 'em too...
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Old 10-14-2007, 08:41 PM
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thanks i thought it should run between 160 deg and 180 deg. but the hotter temps for complete combustion makes sense. I am used to carb. equipped vehicles and they dont like 200 deg.
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Old 10-14-2007, 08:53 PM
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Tell me about it...I used to freak when my Tiger hit 200║, but my race car regularly hit 220║ and I sort of got used to the higher temps. I was a bit surprised at first though when I found out that EFI engines ran those kinds of temps, but it does make sense.
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