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heat problem

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Old 04-19-2008, 04:36 PM
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heat problem

Seems like since I installed my underdrive pullies my 5.0 runs hotter than I like it. Like today it was 25 degrees outside it was running at about 200 degrees. I would prefer if it would stay around the 180- 185 mark . the rad is a 3 core not the single core it use to be . And everything has approx 1700 km on it. Now I have 3 options that I can think of .
1- just change the water pump pulley and hope it works
2 -I have a tarus electric fan the I have adapted into a stock fan shroud
I also have a dual I think 10 inch fan set up .
If I was going to use the electric I would just wire them up to a heavy duty rocker from the negative side .
what is everyones thoughts on this
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Old 04-19-2008, 07:00 PM
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My Buddy had problems with his 5.0 doing the same thing and we were actually talking about this today. You might want to try a lower thermostat. He was running a 180 and dropped it to I think 150, and he has had no problems. Hope this helps you.
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Old 04-19-2008, 07:40 PM
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Thats odd, I never had a problem when I did U/D's on my 5.0.
What size thermostat you have in there now?
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Old 04-19-2008, 11:45 PM
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i should of mentioned I have a 180 thermo... you know I have been thinkin. overkill and I just changed the heater core.. maybe all the air isnt out of system yet .... thought i got it all
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Old 04-20-2008, 06:10 AM
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you may not want my opionion but im giving it anyway.


my 89 was a bitch to get all the air out. We finally had to park it on a hill with the front end up, bringing the rad cap to the highest point of the cooling system so the air gets out easier.
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Old 04-20-2008, 07:15 PM
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Originally Posted by StealthGT
you may not want my opionion but im giving it anyway.


my 89 was a bitch to get all the air out. We finally had to park it on a hill with the front end up, bringing the rad cap to the highest point of the cooling system so the air gets out easier.
why wouldnt I want your opinion. I value everyones .opinion.
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Old 04-20-2008, 08:14 PM
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You shouldn't have issues with the pullies. Does the fan have two speed levels ? Is the highest one on ?
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Old 04-21-2008, 06:31 AM
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Originally Posted by GregK
You shouldn't have issues with the pullies. Does the fan have two speed levels ? Is the highest one on ?
no its not the heaat coming from the heater its the temp of the water in the motor thatshotter than i like
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Old 04-21-2008, 04:03 PM
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Originally Posted by MID LIFE CRISIS
no its not the heaat coming from the heater its the temp of the water in the motor thatshotter than i like
GregK meant the fan on your rad. Some of them have High and low speed and depending on how you wired them. they may only be on low.
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Old 04-21-2008, 05:28 PM
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i had the same problem until i put the stock fan and shroud back on. I left the under drives on though.
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