Mishimoto Racing Thermostat Problem
Jun 20, 2011, 11:28 AM
#16
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I installed the Mishimoto thermostat,,, OEM Stock EVO thermostat opens at 82 Celsius and the Mishimoto opens at 63 Celsius but since I put it the light from the "check engine" turns on even if I disconect the battery and reset the computer, two or three hours later the "check engine" light turns back on again. But the Evo X has no mechanical failure. Can anyone tell me what this is about?
2. Did you bother to pull the codes?
Pull the codes, could be unrelated. Either way unless there is a very specific reason you went to a colder thermostat just go back to OEM.
Jun 21, 2011, 03:07 AM
#17
OK so I just got off the phone with Mishimoto and from what the tech told me these thermostats are used on a case by case basis. They are for vehicles that are overheating too quickly.
With that being said on my personal car I use an OEM thermostat after trying a lower temp thermostat and finding my car could not get up to operating temps. I do not use radiator fans, just distilled water and water wetter. The car is a road race car only. I do 99% of my races in the South West. There are not a whole lot of applications I could reccomend these for. I am a vendor for these products as well and if you do find yourself in need of one please feel free to contact me for pricing!
With that being said on my personal car I use an OEM thermostat after trying a lower temp thermostat and finding my car could not get up to operating temps. I do not use radiator fans, just distilled water and water wetter. The car is a road race car only. I do 99% of my races in the South West. There are not a whole lot of applications I could reccomend these for. I am a vendor for these products as well and if you do find yourself in need of one please feel free to contact me for pricing!
Jun 21, 2011, 09:19 AM
#18
Thanks, can you give me (us) an idea in which you would recommend the thermostat? What are the circumstances in which a car is overheating too quickly? High ambient heat maybe? Or a drag car? I'm road racing only as well and using water and WW, while oil gets pretty darn hot (240 +/-) water temp stays pretty stable. oh, and why no fans? Not really a weight thing...
And with the fans weighing in at ~8 ish lbs thats plenty of reasnon for me to get rid of them. They also were never coming on so when I built my own wire harness I just left them out. My race water temps are aboout 180, and my oil is about 235.
240 is not that high, Evo's routinely run hotter than other cars, I was seeing 290'ish for a while till I rebuilt my engine and put on a monster oil cooler.
Feb 22, 2016, 12:56 PM
#21
I know this is a old thread, but what is the general consensus on running without a thermostat on Evo okay?. I mean really I don't think anybody here just turns their car on in the morning and start driving immediately after 15-20 seconds. Operating temperature is very operating when discussing about engine longetivity, bearings life, fuel economy. I don't think a part that cost $10 is not worth a new head or block replacement.
Feb 23, 2016, 07:18 AM
#22
Evolved Member
umm the thread appears to be about running either a mishimoto one or a stock one. And it looks like sticking with the stock one was the way to go. Im pretty sure not running one would cause the car to always be cooling and never reaching the correct operating temp...and im not sure how or why you would bypass it.
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