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Overheating At High Speed Of Between 60-80 Km/h - Car Talk - Nairaland

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Overheating At High Speed Of Between 60-80 Km/h by MarkAfoo: 1:16am On Jul 19, 2017
I have seeing cars overheating in traffic jam and hold-ups but my own case is special. My car overheats at 70-80 km/h and each time I stop to check what was wrong with the cooling system I discovered that the coolant/water level is normal. If I allow the engine to cool down and continue at 50-60 km/h, the temperature will be normal. The engine thermostat is intact. I even changed the thermostat on my way back to check whether it is bad, it still did the same thing after about 20 km. Please what can I do to get the cooling system back to normal.
Re: Overheating At High Speed Of Between 60-80 Km/h by honmusa(m): 2:06am On Jul 19, 2017
MarkAfoo:
I have seeing cars overheating in traffic jam and hold-ups but my own case is special. My car overheats at 70-80 km/h and each time I stop to check what was wrong with the cooling system I discovered that the coolant/water level is normal. If I allow the engine to cool down and continue at 50-60 km/h, the temperature will be normal. The engine thermostat is intact. I even changed the thermostat on my way back to check whether it is bad, it still did the same thing after about 20 km. Please what can I do to get the cooling system back to normal.
Model of vehicle ??
Re: Overheating At High Speed Of Between 60-80 Km/h by GAZZUZZ(m): 6:42am On Jul 19, 2017
MarkAfoo:
I have seeing cars overheating in traffic jam and hold-ups but my own case is special. My car overheats at 70-80 km/h and each time I stop to check what was wrong with the cooling system I discovered that the coolant/water level is normal. If I allow the engine to cool down and continue at 50-60 km/h, the temperature will be normal. The engine thermostat is intact. I even changed the thermostat on my way back to check whether it is bad, it still did the same thing after about 20 km. Please what can I do to get the cooling system back to normal.

* check that fans are turning in the proper dire0tion, air flow should be in the direction of the engine.

Check for excessive buildup of dirt on condenser and radiator.

If you done with the 2 above and no issues found, replace radiator.
Re: Overheating At High Speed Of Between 60-80 Km/h by Alexgray(m): 9:14am On Jul 19, 2017
I experienced this once.,i had to check fan,drive belt,water pump,radiator and condenser.i later discovered the cells in the radiator were blocked..i had the blocked cells flushed and cleaned and radiator was as good as new.
Note: the process was not flushing the radiator alone,it involved having the radiator cover removed and the cells flushed.it was not done in the car wash,it was done by one guy who deals only with radiators.
Re: Overheating At High Speed Of Between 60-80 Km/h by GAZZUZZ(m): 8:45pm On Jul 19, 2017
Alexgray:
I experienced this once.,i had to check fan,drive belt,water pump,radiator and condenser.i later discovered the cells in the radiator were blocked..i had the blocked cells flushed and cleaned and radiator was as good as new.
Note: the process was not flushing the radiator alone,it involved having the radiator cover removed and the cells flushed.it was not done in the car wash,it was done by one guy who deals only with radiators.

safer to replace.

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Re: Overheating At High Speed Of Between 60-80 Km/h by Alexgray(m): 7:41am On Jul 20, 2017
GAZZUZZ:


safer to replace.

Well,it wasnt as if it was not also safe,it was also cheaper.i was using a 1996 toyota previa at that time.but let me just say i would recommend replacement in that case for 2000 models and above..how about that? smiley
Re: Overheating At High Speed Of Between 60-80 Km/h by honmusa(m): 9:21am On Jul 20, 2017
Alexgray:


Well,it wasnt as if it was not also safe,it was also cheaper.i was using a 1996 toyota previa at that time.but let me just say i would recommend replacement in that case for 2000 models and above..how about that? smiley
Principle of cooling system remain the same regardless of car model .If the radiator is bad ,just replace it instead of taking the huge risk that can cost you another engine !!! Repairing a bad radiator seemly look cheaper in the beginning but much more expensive in the long run .
Re: Overheating At High Speed Of Between 60-80 Km/h by Alexgray(m): 11:32am On Jul 20, 2017
honmusa:

Principle of cooling system remain the same regardless of car model .If the radiator is bad ,just replace it instead of taking the huge risk that can cost you another engine !!! Repairing a bad radiator seemly look cheaper in the beginning but much more expensive in the long run .

Yes i agree the principles of cooling remain the same.but if u take a closer look models differ a lot.same kind of radiator for both manual and auto transmission but not the same activity.in a manual transmission vehicle,no provision for ATF coolant in the radiator.i took my time before having the radiator repaired.the same guy took his time to explain the process and he even told me that most of the said 'tokunbo' , '1st grade radiators are refurbished,resprayed and resold even with warranty! My search for a brand new radiator yielded no result.so i thot of it,if i buy a new tyre today and it punctured 2moro,wont i have the tyre patched instead of buyin a new one all cos of a tiny hole? And its not as if im goin for F1 with it anyway.
I knew how the radiator works.tiny cells that coolant passes through..once coolant cant go through easily when speed increases,overheating sets in..but once in traffic,the little coolant it delivers is enough as there is not much the engine is doing at idle speed.there was absolutely no risk involved.and it was pocket friendly.n
Re: Overheating At High Speed Of Between 60-80 Km/h by erico2k2(m): 12:37pm On Jul 20, 2017
sounds like water pump. Talking from my own experience. At high speed the wind helps. But if the water is not circulating, then the water in the Engine over heats too.

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Re: Overheating At High Speed Of Between 60-80 Km/h by Originalsly: 5:50pm On Jul 20, 2017
erico2k2:
sounds like water pump. Talking from my own experience. At high speed the wind helps. But if the water is not circulating, then the water in the Engine over heats too.
Not into mechanics...but that's what I was thinking.... maybe the coolant isn't circulating. What if the hoses are blocked?...but I guess any blockage would must likely be in the radiator.
Re: Overheating At High Speed Of Between 60-80 Km/h by GAZZUZZ(m): 5:59pm On Jul 20, 2017
erico2k2:
sounds like water pump. Talking from my own experience. At high speed the wind helps. But if the water is not circulating, then the water in the Engine over heats too.

Originalsly:
Not into mechanics...but that's what I was thinking.... maybe the coolant isn't circulating. What if the hoses are blocked?...but I guess any blockage would must likely be in the radiator.

if the water pump is bad, he will not do 5km before parking
Re: Overheating At High Speed Of Between 60-80 Km/h by Originalsly: 6:20pm On Jul 20, 2017
Hmmm....I wonder why so many people use water instead of coolant?... yes it's heaper...but would it really be in the long run?..just wondering.
Re: Overheating At High Speed Of Between 60-80 Km/h by erico2k2(m): 6:52pm On Jul 20, 2017
GAZZUZZ:




if the water pump is bad, he will not do 5km before parking
true,
Re: Overheating At High Speed Of Between 60-80 Km/h by erico2k2(m): 9:20pm On Jul 20, 2017
Originalsly:
Hmmm....I wonder why so many people use water instead of coolant?... yes it's heaper...but would it really be in the long run?..just wondering.
%90 of people in NIgeria use water ahah

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