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SES and a tstat?

This is a discussion on SES and a tstat? within the General Help forums, part of the LSx Technical Help Section category; Will putting a 160 or a 180 Tstat make my SES light turn on? Will i need to get a ...

  1. #1
    Member zeetwentyeight's Avatar
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    SES and a tstat?

    Will putting a 160 or a 180 Tstat make my SES light turn on?
    Will i need to get a tune to run one to not have the light turn on?

  2. #2
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    It won't throw a code/SES. If you want the fan on/off temps changed, that would require a tune.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by 2001NBMZ28 View Post
    It won't throw a code/SES. If you want the fan on/off temps changed, that would require a tune.
    Cool do you think i need to go with a hyper tech or can i just go with a usual 180 degree stat?

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    Member zeetwentyeight's Avatar
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    Is this good enough?
    or do you think i should stick with hypertech?
    http://cgi.ebay.com/ebaymotors/LS1-L...Q5fAccessories

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    I've had a hypertech 160 in mine for years with no issues, don't know about that one. Are you needing to replace yours or just want to change the opening temp? Reason I ask is because my owners manual says 180 is stock, not sure if the '98's are a different temp.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by 2001NBMZ28 View Post
    I've had a hypertech 160 in mine for years with no issues, don't know about that one. Are you needing to replace yours or just want to change the opening temp? Reason I ask is because my owners manual says 180 is stock, not sure if the '98's are a different temp.
    I hate hot running cars its running at like 213 and my stat opens at 190

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    Senior Member 98maro's Avatar
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    My car temp goes higher than 200.
    I dnt like that

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    Quote Originally Posted by zeetwentyeight View Post
    I hate hot running cars its running at like 213 and my stat opens at 190
    Quote Originally Posted by 98maro View Post
    My car temp goes higher than 200.
    I dnt like that
    I would'nt put a ton of stock in the factory guage... They are usually junk from day 1... 213 on a factory guage = "warm"....
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    Senior Member 00z28bubba's Avatar
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    getting a tune for the fans makes the t stat work like it is supposed to. if you put in a 160 t stat with stock fan settings keeps the t stat open with no fan help with the cooling. i put in a 180 and the first fan opens at 175 and the second opens at 185 and as far as hptuners shows on my logs it hasnt gone higher than 189.

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    Senior Member 98maro's Avatar
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    So the only way to keep the temp under 200 is with a tune?

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    Moderator Cutlass's Avatar
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    Quote Originally Posted by 98maro View Post
    So the only way to keep the temp under 200 is with a tune?
    Yep for speeds under about 35 mph, you'll need the fans on and off temps adjusted. Above 35ish, there is enough airflow to through the radiator to keep it cool

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    Moderator Cutlass's Avatar
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    Quote Originally Posted by zeetwentyeight View Post
    I hate hot running cars its running at like 213 and my stat opens at 190
    213 is not hot and is nothing to worry about.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by Smittro View Post
    I would'nt put a ton of stock in the factory guage... They are usually junk from day 1... 213 on a factory guage = "warm"....
    From what i hear the 98's have a three wire harness so it reads alot more accurate then the newer ones

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    is the stock stat 180 ???

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by sjsingle1 View Post
    is the stock stat 180 ???
    Around 190 or just 190

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    i read in some reference material that it is 180

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    Member zeetwentyeight's Avatar
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    From what i have picked up its 190 from what i have heard anyway

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    Moderator Cutlass's Avatar
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    It is 190. I don't think any manufacturer would put a 180 t-stat in for the sake of engine efficiency(fuel economy) and exhaust emissions. Engines run more efficiently at hotter temp

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    Smiles for 9.5 Years cammed goat's Avatar
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    Mine was tuned and the fans were adjusted with HPT. I dunno if the replacement waterpump came with a 160, 180, or 190.

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    Member zeetwentyeight's Avatar
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    Quote Originally Posted by Cutlass View Post
    It is 190. I don't think any manufacturer would put a 180 t-stat in for the sake of engine efficiency(fuel economy) and exhaust emissions. Engines run more efficiently at hotter temp
    But it is better to have a lower one right?

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