hello, I have a 1999 Toyota Camry LE
with the 5s-FE engine
and I have an overcooling problem. I have done quite a lot to fix this problem with no success. I have posted a well informative post on another site that has a lot of fixes I have already done. I will also post a video of my problem and I will copy and paste my question from the other site.
thank you in advanced.
Hello, I have a 1999 Toyota Camry with the I-4 2.2 Engine. (5S-FE)
My engine does always seem to run cold for no particular reason. I noticed that it happened slowly over the course of months the car would run a bit colder and just a little more cold next week. I Thought the Thermostat was stuck open.
So I just changed it with an aftermarket one. Took it for a test drive and Still the same thing. Replaced it again this time with a new OEM Thermostat. It helped a bit more but still much too cold. Other things I have done is check the Coolant Temp sensors. I have 2 of them One is for the ECU and one is for the Gauge on the Instrument cluster. Both appear to read the same. ECU says it runs about 145-160F.
I took an inferred thermometer to the engine and I get almost the same reading. My heat also does not work that great. In Traffic everything is nice and warm and great.
Im at a loss of what I need to do. Cooling fans Turn on as they should at 205F and turn off around 190. I threw cardboard in the Rad and that has helped a lot.
Thanks for any help provided
Things I have Done:
Removed Air In cooling System twice
Changed Thermostat (New OEM is Installed)
Checked Coolant Temp Readings
Compared Coolant Readings to Actual Engine Temp
Checked Fan Relays
Cardboard in Rad.
Changed Coolant temp Sensors with known working
Checked for Codes Stored and Found none
Using 50/50 ish Collant Mix
Checked make sure belt is going right way
Removed Thermostat and saw Further Temp drop
All coolant hoses feel about the same temp so there is no clog anywhere
If you need any other info let me know. I also have access to the Toyota service manual