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Did anyone have any problems installing a lower temp thermo? Will it throw a cel? Any info would be greatly appreciated on what i can expect to happen while putting it in or after its in.
 

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A lower temp thermostat in my Focus did absolutely NOTHING. It will probably make it run cooler in the winter if outside temp is pretty low.

I checked mine with an OBD II scanner when it was 82 degrees outside with the stock thermostat. I changed to a 180 degree thermostat and checked again when the outside temp was 80 degrees. EXACTLY the same temp range. About 200 to 215 degrees depending on how I was driving.

My engine is apart right now for some other mods and when I put it back together I'm puttin the stock one back in. A thermostat doesn't set your operating temperature, the capacity of the cooling system does. Just my .02.
 

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Guys, I think that the fans would need to be reprogramed as well to maintain a cooler temp. The thermostat may open earlier but the engine will eventually get to the same temp unless the fans are trying to cool it to a lower temp. This is what is recomended for my friends Z28. I'm not sure how or if you can change the fan programing. In his case he uses a hypertech reprogramer instead of a preprogramed chip.

Dan
 

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Can't a custom chip control your fans and whatnot? So is a thermostat not worth it? It's not like it's all that expensive.
 

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I have my fans set to 160, and a 160 thermostat, my car runs at about 170 in 30 deg temps, and the warmest day thet I took a look at it was in the low 70's, and it was around 185.

I had a chip burned for my toms mic, and he set it at 160 that way.

Its also not really a performance mod, so much as it is an engine life extender.
 

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i'm pretty sure that the thermostat will just make it think its slightly cooler. i was looking back over some older posts on this and no one really saw any form of gains. if you can get it for damn cheap, i'd say go for it. it might work better in your climate than others.

 

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Yeah, true. It does get fargin hot in herr
 

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If you use your heat in the winter, don't do the change until summer. I noticed no difference in cooling or performance, only froze my butt off when it started into winter. Needless to say its was outta there PDQ.
 
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