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Old 08-27-2015, 12:43 PM   #1 (permalink)
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Default Overheating

Hey guys/gals,

So ive go a 88 samurai that always seems to want to start heating up to the point of over heating. It only seems to happen when im out in the wild, which leads me to believe its not getting enough air. Before i just start replacing parts sensuously, i wanted to see if anyone else has had the same issue or if there is a small fix for this.
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Old 08-27-2015, 02:01 PM   #2 (permalink)
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Is the fan clutch working properly?
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Old 08-27-2015, 02:39 PM   #3 (permalink)
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The fan engages perfectly. Just seems like when I'm not driving around town the engine wants to heat up. Probably when I'm not driving above 10 miles per hour.
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Old 08-27-2015, 08:13 PM   #4 (permalink)
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+1 fan clutch. Look for any signs of leakage around the clutch hub and make sure that it doesn't feel loose. A bad fan clutch can shake the water pump to death and vice versa. They can look like they are spinning just fine but be inadequate to keep it cool on a warm day without driving fast enough for the wind to do what the fan cant.

Is there a fan shroud in place? Thermostat in place and operating correctly?
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Old 08-27-2015, 09:24 PM   #5 (permalink)
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Yeah seems like it's secure. The themost are and water pump we re replaced about s month ago
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Old 08-28-2015, 02:57 AM   #6 (permalink)
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Another possibility that comes to mind would be radiator, maybe when it starts to run a little warm, shut it down then run your hand along the radiator and look for any strange cool spots.

Does it boil coolant out when it gets warm or do you ever have to ad any coolant?
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Old 08-28-2015, 08:22 PM   #7 (permalink)
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I'll have to test the radiator, but never have to replace fluid holds it very well.
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Old 08-30-2015, 10:53 AM   #8 (permalink)
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Fan Clutch
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Old 08-30-2015, 09:46 PM   #9 (permalink)
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Radiator might be your problem, with time water lines inside radiator get clogged, reducing it's cooling capacity. An internal cleaning might be necessary
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Old 08-31-2015, 07:09 AM   #10 (permalink)
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Quote:
Originally Posted by Robgt22 View Post
Radiator might be your problem, with time water lines inside radiator get clogged, reducing it's cooling capacity. An internal cleaning might be necessary

Been myself few weeks ago when I purchase a 1993 swift glx auto 1300 ,
to find that rad was over heating not long after start up and loosing coolant,
before fans kick in and return system to low heat,
I replace thermostat flushed engine and replace radiator and coolant ,
replace temp sensor redid engine timing and ignition timing ,
new plug and leads ,
to no avail
still boiled and lost coolant until fans started after that engine tem seem to remain fairly stable unless left in tick over to long that would starting boiling be fore fan cut in ,
Look to water pump,
See no leaks or stains bearing ok seems nothing wrong with it
but as last in line thinking it might be blocked there was a lot of scale and black goo in first coolant flush, why I replace radiator as you cant get this crap out by flushing
I remove WATER PUMP and found the pump rotor vanes corroded off and all the was left was lumpy nub that had been pump rotor vanes,
So please check water pump,
I have work on my own cars most of my life [56yrs ] first time I ever found this , seems that Suzuki use soft aluminium water pump rotors in some of their engines and lack of/ or old dilated antifreeze made them corrode very fast ,
and BLOCK radiator cores as well you may find radiator has been replace but not water pump ,
so the movement of coolant is down to convection and is not pumping.:}
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