What is normal operating temp on 96 K? - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

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What is normal operating temp on 96 K?

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Old 03-15-2004, 09:10 AM
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Default What is normal operating temp on 96 K?

Hey Guys,
Please help.
I want to do the 180 T-stat thing on my 96 but the protocol for the PCM to "re-learn"
any mod you make is this:
1) Engine must be at operating temp and Idling for ECM to re-learn. or
2) Engine must be at operating temp and driven moderately to re-learn.
My question is:
Does anyone know what the programmed "operating temp" the PCM looks
for on a 96?
I don't want to bypass this feature and thus effect future performance.
If a 180 stat is standard on a 99 could they have re-programmed the
PCM to this temp before making this mod at the factory?
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Old 03-15-2004, 09:30 AM
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Changing the thermostat won't actually change the temp the engine gets to, it just opens the thermostst earlier, making the temp top out slower.

And, to answer your actual question, mine (98, but same engine) generally varies from just a tad above to just a tad below the first mark on the gage. I hope I didn't get too technical on that for ya
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Old 03-15-2004, 11:11 AM
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Thats good to know.
I assume you have a 180? What brand is it.
I found the stant tops out higher than say a robertshaw.
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Old 03-15-2004, 11:31 AM
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If a 180 stat is standard on a 99 could they have re-programmed the
PCM to this temp before making this mod at the factory?
Stock on the 99s is 195. My 99 has the original 195 in it.
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Old 03-15-2004, 05:38 PM
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Originally Posted by MOS95B
Changing the thermostat won't actually change the temp the engine gets to, it just opens the thermostst earlier, making the temp top out slower.

And, to answer your actual question, mine (98, but same engine) generally varies from just a tad above to just a tad below the first mark on the gage. I hope I didn't get too technical on that for ya

The thermostat does set the minimum operating temperature for the vehicle. I just changed from the 195 to the 180 and I am now running about 15-20 degrees cooler.
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Old 03-16-2004, 11:02 AM
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This tech info link said 99 was changed to 180.
http://www.bonnevilleclub.com/techinfo/?article=26
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Old 03-16-2004, 12:30 PM
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That was a vicious rumor circulating at the time. We had a member that swore his came new with a 180 from the factory. Ignore that one.
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Old 03-16-2004, 12:46 PM
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I was gonna say!!! Mine definitely has the 195 from the factory!!!
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Old 03-16-2004, 01:06 PM
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I was wondering about this myself, I bought one a couple of days ago. Is it safe to use with the Dexicool 2 or that orange stuff in my 92? I'm going to do this toward the end of the week, I assume it will work out alright. Also, our these t-stats to be used all year round or just for spring, summer, and fall?

and one last question, what should the Temp be at when I install the new T-stat? mines now usaully stays in the middle.
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