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08-11-2011, 07:06 AM
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#1 |
 Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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I agree with the others that the stock fan should be more than sufficient. However, do note that the GTE already has a supplimental electric fan mounted between the radiator and a/c condenser.... not including the one or two small aux fans next to the mechanical fan. If your car is GTE and the A/C fan is still in place you could bypass it's relay so that it's on full time, but you're wasting energy doing to... the greater the electric draw on the alternator the greater it's resistence and you lose more power.
Fix the real problem is what I recommend.
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If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal.  Tip Jar --->  |
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08-11-2011, 12:32 PM
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#2 |
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Stock
Join Date: Aug 2011
Location: Portugal
Posts: 21
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Thank you all for your replies!
I am checking the entire cooling system, i changed the water pump, the thermostat valve, i will also check the radiator just to make sure it's not blocked or something. What other components should i check? |
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08-11-2011, 12:45 PM
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#3 |
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3" Exhaust
Join Date: Feb 2010
Location: Chicago
Posts: 240
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All of the hoses. Make sure the system is completely purged of air, the fan clutch is good, the shroud is present, check for blockage between the radiator and a/c condenser also if front of the condenser. The 7MGTE cooling system is complex and has many points of potential failure but in good condition it is capable of handling some serious heat.
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08-11-2011, 02:07 PM
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#4 |
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Stock
Join Date: Aug 2011
Location: Portugal
Posts: 21
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Just one more thing...how can i check if the fan clutch is working fine??
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08-14-2011, 02:25 PM
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#5 |
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3" Exhaust
Join Date: Feb 2010
Location: Chicago
Posts: 240
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I tried to search for a video or link with instructions but all I could find were idiots sticking things in the fan while it was running to see if it would stop. I can't recommend those methods. While the engine is cold (and off!), the fan should give resistance to turning by hand. You can check it for side to side wobble, there should be very little to none. You may have to remove it to check if the fluid inside has leaked out around the coil in the front, unless you can squeeze between the fan and radiator to look at it.
If you end up taking it off, and are unsure of how old it is, just replace it. It is pretty cheap and will eliminate it as the cause of your temp issues. |
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08-14-2011, 06:09 PM
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#6 |
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Supra Forum Moderator
Join Date: Nov 2009
Location: Green-Ohio
Posts: 1,297
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from what I remember from past posts that there are two types of fans you can install.. thermostat controlled ones and electrical switch types.. I believe the general consensus was the thermostat controlled ones are the way to go.
Am I close on this. It's been awhile.
__________________
 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines : |
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08-15-2011, 02:07 AM
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#7 |
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Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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If his existing fan is working then adding another isn't going to fix anything.
The fan clutch should get harder to spin the warmer it is (with the engine off). If it's as easy to spin when cold as it is when the engine is hot then it's bad. It should never spin completely freely nor refuse to be moved by hand. http://www.popularmechanics.com/cars...enance/1772922 http://www.ehow.com/how_5086903_test-fan-clutch.html There's also the infamous newspaper diagnosis technique but I'm not going to advise that myself... You can find it on YouTube. It's safe enough unless you're an idiot or happen to get startled and throw your hand into a moving belt...
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> |
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08-29-2011, 04:00 PM
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#8 |
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12psi boost
Join Date: Mar 2011
Location: fort myers florida
Posts: 345
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i got a 87 turbo which came whith one electrical fan and the heavy mechanical fan, so i went to the junk yard and found a N/A 89 i belive and took the shroud and the twin electrical fans, i spliced a few wires, swaped the shrouds and now the fans work great. its was cheap easy and thankfully the 89 shroud can retrofit the 87
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08-29-2011, 04:02 PM
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#9 |
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12psi boost
Join Date: Mar 2011
Location: fort myers florida
Posts: 345
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mine does the same thing as well. i put one of thes pressure caps whith the little pressure relive tabs on it when ever i release the pressure my overflow tank starts to gurgle and bubble. Doesent seem to hurt it any just wierd
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