holocron:


Don't you think the 2 bolded sentences contradict each other? Your 2nd assertion rhymes with what we are saying. The engine takes a shorter time (than in colder climes) to attain operating temperature (88°C). Without thermostat, the water constantly coming in from the radiator is about 50°C - 60°C, gets to the engine and rapidly rises to 88 degrees before moving on to the radiator.

holocron:


Don't you think the 2 bolded sentences contradict each other? Your 2nd assertion rhymes with what we are saying. The engine takes a shorter time (than in colder climes) to attain operating temperature (88°C for the toyota sequoia V8). Without thermostat, the water constantly coming in from the radiator is about 50°C - 60°C, gets to the engine and rapidly rises to 88 degrees before moving on to the radiator.

timifakay:


On the average, cars operate within the 88°c to 97°c temperature range. This means that at start up when cold, the thermostat is shut till vehicle reaches 88°c. This ensures the coolant temperature rises rapidly.
Then the fan only works when the upper temperature range of 97°c is attained and it goes off when temperature drops to lower operating limit of 88°c.
But when the thermostat is out and fan works at all times, the temperature takes longer to rise to minimum limit and never attains maximum limit.

honmusa:
We will like to continue the discussion on this thread by showcasing case study of live issues .
( Strictly cooling system and overheating issues)

inikamoze:
What can be done to block a leakage in the AC unit. Was told there is a leakage blocking material that can b used to stop the ;leakage.

inikamoze:
What can be done to block a leakage in the AC unit. Was told there is a leakage blocking material that can b used to stop the ;leakage.

moluwaseun:
I really appreciate the good works you are doing, I noticed coolant loss in the radiator on my Toyota Highlander 2004, took it to the mechanic and he replaced radiator cap, still had same issues and car got overheated, took it back and noticed a leak on the plastic part on the top of the radiator, he replaced the plastic part and still same issue of coolant loss after driving, while washing the car this morning, I noticed lots of coolant on the rear floor behind the front passenger seat, the coolant gets so much and also little around the front passenger just along the door side, but that if the rear floor seems so plenty after driving what could be the cause and solution I would appreciate thanks

inikamoze:
What can be done to block a leakage in the AC unit. Was told there is a leakage blocking material that can b used to stop the ;leakage.

honmusa:

Stuck close thermostat, faulty water pump ,bad Radiator cap,clogged Radiator and also watch for extremely lean condition of air fuel mixture.

honmusa:

Go for cooling system pressure test ,this test will pinpoint the source of leakage within few minutes .
If you are in Lagos , you can call autologic (08061166316 ) for the test .
This is the pic showing the test being done on a Mazda car.

Hellustic:


Not at all... I checked and there is no leak.. My mechanic had to change the radiator with another mazda mpv to confirm and it was still overheating

holocron:


I know and accept all you have said. I am more interested at the bolded. Yes, Nigeria lies very close to the equator b/w latitudes 4° and 13°in the tropics and as such the sun is almost always overhead all year round. These other areas you mentioned are all above latitude 30°, part pf the temperate regions of the world. Note: The sun can never be directly above your head anywhere above 30° latitude. Those places you mentioned, there midday sun even in summer is like our 10am sun. Nigeria is far hotter than those areas. Thats why our skin evolved to black and they remained fair.

Elsueno:


Unless u tempered with the wiring, When a car cooling system fails it automatically activates the highest speed of cooling fan when it reaches d danger zone!

When my Peugeot fan resistor failed, the engine temperature shot up..But a very noisy fan speed kicked in at high temperature & cool the engine to 95 degree. though I stopped immediately & car refused to start till temperature dropped to below 80

okoroemeka:
all I know is that it's far more safer and cheaper to remove the thermostat and drive on a slightly colder engine,than leave it and risk catastrophic overheat when it malfunctions,and remember most of these modern aluminum block engines overheat is mostly the cause of their death,any car that I use I remove the thermostat,it will only affect a micro amount of fuel consumption when still cold but after some minutes of driving the car will warmup,I have experienced overheat caused by a faulty thermostat that destroyed the top cylinder and valves,I am no longer interested in that factory spec

autologic:

Some arguments are not worth going into cos this has trashed countless times on this forum. And what fail to realize is that removing that same thermostat can also cost you your engine not only about fuel alone
It your car ,you can thow anything at it na since you know more than the manufacturer ,at least mechanic and parts sellers must chop na

okoroemeka:
all my previous cars were used without thermostat and they worked perfectly fine, without all noticable increase in fuel consumption, wear or tear,the thermostat is mainly meant for colder places with below freezing point temperature to allow engines to heat up faster,I doubt if fully tropicalized cars will have thermostats or heated interiors.most of cars we are using are used cars made in us,Canada or Europe,these countries have extreme cold weather and put in place features to help like day running lights,winter tyres,anti freeze, thermostats, heated interior,heated seats,these things are not needed in the tropics,who in his sane mind will switch on his seat heater in Nigeria?is will simply roast your buttocks.

Elsueno:


Brother, He is right woh, older vehicles might not be affected by thermostat & direct fan connection much...But it's seriously detrimental to modern cars. The kind of codes a modern car throws due to direct fan connection might reach up to 5 sef. And to me honestly, fuel consumption is very noticeable, as I reset counter after a full tank. And to be honest, engine sound, smooth driving etc. The car feels totally different when it's operating at correct temperature. Hate to burst ur burble even cars in Dubai have thermostat