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WHy does it need to be lower then 145?
Well, the thermostat opens around 180*
No problem. It's part of the EFI system. Search YouTube for 22re performance, they have a video on there on how to check that sensor.
You're correct. That other senior is the thermo switch sensor. It talks to the ecm.
The thermo switch activates the cold start injector. What type of aftermarket gauge you using? The ones I've seen you have to splice a tube in the radiator hose, and it has a sensor in it. I want to put in a pillar cluster with real gauges.
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