After an overrev killed my motor (broken valve guide, tear down showed I was on the verge of spinning a bearing (probably not related to over rev)) I decide to purchase a JDM F20c. Swapped it in and finally got the car to start, however a CEL came on and gave me P0336. The temp gauge went up to four bars (I’ve never seen it go up this high (MY2002 AP1)). Is there something I could’ve missed during the swap? I checked all of the wiring and it all looks good. Could it be a bad sensor?