So follow up to the oem T-stat replacement thread on the Kia Forte 2.4L. ( https://bobistheoilguy.com/forums/threads/hyundai-kia-2-4l-thermostat-replacement-on-forte.360076/ )
I was greeted with a check engine light (P0128) This am. I replaced the perfectly fine oem working T-stat because it has a few years and some miles on it with a new oem genuine 82C t-stat. also wanted to replace coolant and keep the oem coolant type.. Long story short I had to do the job twice. The first time I put the gasket on the t-stat housing (It did not come off like that, I don't know what I was thinking....) and not the engine block. Then it started to leak under pressure. Drained coolant again disassembled the t-stat housing put the gasket in the correct location on engine block and reassembled.. Filled up coolant bleed the system of air for over a hour then drove it for a day and repeat just to make sure all air was out of system. Triple checked for leaks none are present and it holds pressure perfectly the system.
I did not look at freeze frame data to see what conditions the light was set. But the first drive after the final coolant refil/ t-stat replacement and bleed. I gave it a couple gear wot pull and noticed the temp dropped to 1/4 and heat got cooler. Outside temps were 34F. That was a day or two ago.. I just assumed the T-stat opened and air was expelled. I let the car cool checked level after I started on cold engine and added maybe a cup to radiator. Currently no air bubbles are preset and the temp drop has not occurred again even after wot shifts in 34 degree air. But that's when the the check engine lit up. The engine will register heat within a min of starting and show full operating temperature in about seven minutes even in mid 30's temps. The heat output is really nice no fluctuating or anything like that and its very warm. Same for temperature gauge on the dash it will go to about half not fluctuate one single LCD pixel.
So that background. Could this just be a old code after the thermostat/coolant replacement and the one temp drop that happened? Give me your thoughts on this please. Thanks!.
I was greeted with a check engine light (P0128) This am. I replaced the perfectly fine oem working T-stat because it has a few years and some miles on it with a new oem genuine 82C t-stat. also wanted to replace coolant and keep the oem coolant type.. Long story short I had to do the job twice. The first time I put the gasket on the t-stat housing (It did not come off like that, I don't know what I was thinking....) and not the engine block. Then it started to leak under pressure. Drained coolant again disassembled the t-stat housing put the gasket in the correct location on engine block and reassembled.. Filled up coolant bleed the system of air for over a hour then drove it for a day and repeat just to make sure all air was out of system. Triple checked for leaks none are present and it holds pressure perfectly the system.
I did not look at freeze frame data to see what conditions the light was set. But the first drive after the final coolant refil/ t-stat replacement and bleed. I gave it a couple gear wot pull and noticed the temp dropped to 1/4 and heat got cooler. Outside temps were 34F. That was a day or two ago.. I just assumed the T-stat opened and air was expelled. I let the car cool checked level after I started on cold engine and added maybe a cup to radiator. Currently no air bubbles are preset and the temp drop has not occurred again even after wot shifts in 34 degree air. But that's when the the check engine lit up. The engine will register heat within a min of starting and show full operating temperature in about seven minutes even in mid 30's temps. The heat output is really nice no fluctuating or anything like that and its very warm. Same for temperature gauge on the dash it will go to about half not fluctuate one single LCD pixel.
So that background. Could this just be a old code after the thermostat/coolant replacement and the one temp drop that happened? Give me your thoughts on this please. Thanks!.