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Anything I need to know about thermostats?

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Old Aug 4, 2010 | 07:23 PM
  #1  
Zerocyde's Avatar
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From: Spokane, Wa.
Car: 88 Camaro
Engine: 416 Stroker LS
Transmission: Magnum F
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Anything I need to know about thermostats?

Put a 160 in when I first bought it. Anything wrong with this?

Got my fan on a switch, not automatic.
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Old Aug 4, 2010 | 07:31 PM
  #2  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
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Re: Anything I need to know about thermostats?

Originally Posted by Zerocyde
Put a 160 in when I first bought it. Anything wrong with this?

Got my fan on a switch, not automatic.
http://www.carnut.com/ramblin/_cool3.html

I only run 180s now.....
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Old Aug 4, 2010 | 07:34 PM
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From: Central California
Car: 92 Camaro RS
Engine: LO3
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Re: Anything I need to know about thermostats?

When the weather starts cooling down and you want warm air from the heater or for defrosting, it's going to take longer
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Old Aug 4, 2010 | 07:44 PM
  #4  
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
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Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Anything I need to know about thermostats?

The computer should be reprogrammed to operate at a lower temperature. If the ECM only sees it at 160, it may think the engine is too cold and run richer or in an open loop to try and warm it up. 180 is better.
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Old Aug 4, 2010 | 08:28 PM
  #5  
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From: Spokane, Wa.
Car: 88 Camaro
Engine: 416 Stroker LS
Transmission: Magnum F
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Re: Anything I need to know about thermostats?

Thanks fellas.
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Old Aug 4, 2010 | 08:55 PM
  #6  
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From: Andover, MN
Car: 1989 Trans Am GTA
Engine: 5.7L TPI
Transmission: 700R4
Axle/Gears: Stock 9bolt posi
Re: Anything I need to know about thermostats?

I was about to do that to my car also, put a 180 in. But my dad keeps telling me that the car needs to have a 195 because the coolant temp sensor needs to have the correct operating temperature to tell the tranny how to shift and whatnot. i would say put a 195 back in it, take out the A/C to get the radiator some more air, and hook up your electric fans to a switch so you can turn them on when you want. my 2cents
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Old Aug 4, 2010 | 09:07 PM
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Re: Anything I need to know about thermostats?

delete
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Old Aug 4, 2010 | 10:50 PM
  #8  
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
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Re: Anything I need to know about thermostats?

Originally Posted by HighTechRedneck
I was about to do that to my car also, put a 180 in. But my dad keeps telling me that the car needs to have a 195 because the coolant temp sensor needs to have the correct operating temperature to tell the tranny how to shift and whatnot.
In this case, your dad is wrong. Although the ECM does control the locking and unlocking of the toque converter, it has no control what-so-ever over the transmission shift points - that is controlled solely by the TV cable attached to the throttle linkage. 700R4's (4L60) had no computer control at all, except for the locking of the TC. BUT - the 4L60e did have a PCM that controlled shift points (the "e" is for electronic) - these were in the 4th gen cars after 1993 (most 1993 cars had the 4L60 non-"e" tranny).

As mentioned, the ECM can throw more fuel out if it's not sensing enough heat and it thinks the engine is running cold, but a 180 stat is fine - lower than 180 will cause issues though.
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Old Aug 5, 2010 | 03:37 PM
  #9  
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From: Andover, MN
Car: 1989 Trans Am GTA
Engine: 5.7L TPI
Transmission: 700R4
Axle/Gears: Stock 9bolt posi
Re: Anything I need to know about thermostats?

Originally Posted by camaronewbie
In this case, your dad is wrong. Although the ECM does control the locking and unlocking of the toque converter, it has no control what-so-ever over the transmission shift points - that is controlled solely by the TV cable attached to the throttle linkage. 700R4's (4L60) had no computer control at all, except for the locking of the TC. BUT - the 4L60e did have a PCM that controlled shift points (the "e" is for electronic) - these were in the 4th gen cars after 1993 (most 1993 cars had the 4L60 non-"e" tranny).

As mentioned, the ECM can throw more fuel out if it's not sensing enough heat and it thinks the engine is running cold, but a 180 stat is fine - lower than 180 will cause issues though.
ok, good to know. thanks for the info.
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