suddenly overheating... how bad?

sd88supra · 06-20-2006, 06:56 PM

when my 87 idles a lot, such as in very heavy traffic (or crossing the us/mex border), my baby suddenly starts to overheat, as the temp gauge indicates. my question is, it neither smokes nor feels significantly hotter than if it were running normal. however, im not gonna take my chances and ive been avoiding the possibilty of hitting heavy traffic. my guess is its a bad fan clutch. im not losing coolant. as soon as i start driving normal again, the temp gauge quickly goes back down.

so, bad fan clutch? i also dont have a fan shroud but neither does my 86.5 and that one doesnt have heating problems (and seems to have a much stronger fan clutch). i think ill switch over to electric fans...

theWeezL · 06-20-2006, 08:58 PM

I would recommend getting the fan shroud. It makes a world of difference in just the situation you're describing. Maybe the 86.5's radiator is in better shape or some other reason it stays cooler.

But yeah, you could have a weak fan clutch. If there is one thing NOT to fool around with its an overheating Supra. FIX IT SOON...or fix alot more later!

sd88supra · 06-20-2006, 10:12 PM

actually my 87 has a 6 month-old radiator. would i need the fan shroud even w/ electric fans?

ddmcse · 06-21-2006, 10:21 AM

some of the elect fans come with a shroud

mine didn't but i made a small shroud for it

06-20-2006, 06:56 PM	#1
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	suddenly overheating... how bad? when my 87 idles a lot, such as in very heavy traffic (or crossing the us/mex border), my baby suddenly starts to overheat, as the temp gauge indicates. my question is, it neither smokes nor feels significantly hotter than if it were running normal. however, im not gonna take my chances and ive been avoiding the possibilty of hitting heavy traffic. my guess is its a bad fan clutch. im not losing coolant. as soon as i start driving normal again, the temp gauge quickly goes back down. so, bad fan clutch? i also dont have a fan shroud but neither does my 86.5 and that one doesnt have heating problems (and seems to have a much stronger fan clutch). i think ill switch over to electric fans...

06-20-2006, 08:58 PM	#2
theWeezL 12psi boost Join Date: May 2006 Location: Oregon Posts: 376	I would recommend getting the fan shroud. It makes a world of difference in just the situation you're describing. Maybe the 86.5's radiator is in better shape or some other reason it stays cooler. But yeah, you could have a weak fan clutch. If there is one thing NOT to fool around with its an overheating Supra. FIX IT SOON...or fix alot more later! __________________ *____________* *Eagles may soar, but weezl's never get sucked into jet engines!*

06-21-2006, 10:21 AM	#4
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	some of the elect fans come with a shroud mine didn't but i made a small shroud for it __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

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06-20-2006, 10:12 PM	#3
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	actually my 87 has a 6 month-old radiator. would i need the fan shroud even w/ electric fans?