Manuella4ace:


Replace your thermostat first.
And I think your problem would be solved.
Your coolant is just flowing freely without being controlled with the opening and closing of the thermostat at high and normal temperature, since you've confirmed that there's no thermostat, just replace it.

Also fill your radiator, and also fill the reservoir to the fill mark, try and bleed your cooling system.
To bleed, Start your car, switch your heater on to highest temperature, open the radiator cover, allow the car to steam the radiator fan should come on twice, then top up the radiator with coolant and close the cap, and your good to go.

yeah I plan to buy the thermostat regardless as I want the cooling system to be in factory setting.
I'll run that test when I do, thanks.

mechanic says about 7k for thermostat, what do you all think about that price?

Dozieson:


fill the radiator and reservoir then monitor the drop in coolant day by day, Dont open your engine anyhow. it may not return to its original state if handled by some kazeems

yeah I've started monitoring,
can't even rush into that yet

jceesquare:

Start with the simple then move to the difficult.
1. Check your radiator cap
2. Coolant hose and pipes
3. Radiator
4. Water pump
5. Then gasket.

my mechanic says 1- 4 are okay, I can confirm somewhere else though

Good day guys,
Please I need your diagnosis,

I have a 2010 corolla that seems to have an overheating issue.
bought it with the fan wired directly so recently I had it reset in July.
now the temperature guage rises a bit above middle point (about 60%) when the engine gets warm,
fan working intermittently as it should, also found out thermostat is missing
scanning sometimes reveals P0128, it comes and goes, the only other code is P0037 - oxygen sensor related

notable coolant loss but no coolant leak, although now that I think of it, I never actually fully filled the radiator since I bought the car late last year.
I also noticed that the coolant returns to the reservoir during sunny days

my mechanic suggested gasket replacement but I want to be absolutely sure it's the cause.

heard about combustion leak test for bad gasket,
where can I do that in Lagos? I'm around Maryland.

Thank you

godwinchuka how much is 2010 corolla gearbox?