Very weird issue with the climate control system
01-04-12, 07:15 AM
#16
The short story is: adding coolant did solve this problem.
The long story is: the overflow reservoir (or whatever it's called) was completely empty. I filled it with coolant to the FULL line. Drove the car couple of days later but the cold air below 1000 RPM problem was still there. After the car had cooled down, I undid the radiator cap (it's actually away from the radiator under the engine cover) and filled the system with coolant through there. Drove the car the next day and the issue is gone!
So if your coolant reservoir is bone dry, fill the cooling system through the radiator cap (ONLY WHEN ENGINE IS COLD). Do it very slowly (I used a seringe) and any extra coolant will flow to the overflow reservoir. At that point add coolant to the actual reservoir.
On a side note, this experiance made me check the coolant level in my wife's 2004 4Runner and it was also so low that I had to fill it through the radiator cap (in this case actually located on the radiator). Thankfully it also uses the super long-life coolant so I had it handy. Overall, between the two vehicles I used about half of a gallon of coolant.
Moral of the story: check the coolant level I'd say at least once a year.
Thanks everyone that posted here and helped me fix this problem. I can always count on ClubLexus.
The long story is: the overflow reservoir (or whatever it's called) was completely empty. I filled it with coolant to the FULL line. Drove the car couple of days later but the cold air below 1000 RPM problem was still there. After the car had cooled down, I undid the radiator cap (it's actually away from the radiator under the engine cover) and filled the system with coolant through there. Drove the car the next day and the issue is gone!
So if your coolant reservoir is bone dry, fill the cooling system through the radiator cap (ONLY WHEN ENGINE IS COLD). Do it very slowly (I used a seringe) and any extra coolant will flow to the overflow reservoir. At that point add coolant to the actual reservoir.
On a side note, this experiance made me check the coolant level in my wife's 2004 4Runner and it was also so low that I had to fill it through the radiator cap (in this case actually located on the radiator). Thankfully it also uses the super long-life coolant so I had it handy. Overall, between the two vehicles I used about half of a gallon of coolant.
Moral of the story: check the coolant level I'd say at least once a year.
Thanks everyone that posted here and helped me fix this problem. I can always count on ClubLexus.
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latina08 (01-18-20)
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