cbr900boy
New member
Hello all, I recently purchased a BAFX Bluetooth OBDII reader and downloaded Torque Pro on my phone. I own a 2001 4runner 2WD as my DD and a 1998 Limited 4WD as my fun toy. After comparing specs on both vehicles I noticed that the coolant temp on my 2001 ranged anywhere between 181F to 190F at normal operating temp. My 1998 on the other hand ranged between 198F to 208F!!! WTF??? Keep in mind I bought my 98 used with 260K on the ODO so I replaced all the critical components: new OEM radiator, cap, timing belt, hoses, water pump, thermostat, red coolant, etc...everything OEM Toyota.
After doing some research, many have stated that the thermostat jiggle valve orientation is key to reducing temps at least 10 degrees. The jiggle valve MUST be in the 6 o'clock position according to the Toyota FSM, be warned I believe either Chiltons or Haynes states it must be in the 12 o'clock position which is completely WRONG.
So being the OCD person that I am, I check the thermostat and lo and behold, it was in the 12 o'clock position. I placed it in the 6 o'clock position and placed everything back together. The temp now ranges from 182F to 192F, never exceeding 192F.
arty:
I know this have been discussed plenty of times before but just wanted to share another positive experience.
After doing some research, many have stated that the thermostat jiggle valve orientation is key to reducing temps at least 10 degrees. The jiggle valve MUST be in the 6 o'clock position according to the Toyota FSM, be warned I believe either Chiltons or Haynes states it must be in the 12 o'clock position which is completely WRONG.
So being the OCD person that I am, I check the thermostat and lo and behold, it was in the 12 o'clock position. I placed it in the 6 o'clock position and placed everything back together. The temp now ranges from 182F to 192F, never exceeding 192F.
arty:I know this have been discussed plenty of times before but just wanted to share another positive experience.
