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1997 Eldorado
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637 Posts
i hear different answers i always thought 195-210ish but my eldo runs 215-235. i have read many threads where some people say northstar motors run hotter than normal and thats fine. but then i go in my friends eldo and his doesnt get above 205. so im not sure but i would say 248 is pretty warm thats almost the second line right?
 

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94 Eldorado, and a 99 ETC
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3,887 Posts
248 is too hot. You have a problem. Check the coolant level, check for leaks, make sure the fans turn on at 224 degrees, and before you buy anything get an exhaust gas byproducts test done on the cooling system.
 

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2005 Escalade,1996 Eldorado
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23 Posts
Mine stays right on 203 or 204 consistantly but we never have any weather warmer that 65 or 70 here in Alaska.
 

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White Diamond '03 DHS (with DTS floor shift)
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87,118 Posts
My '97 (digital) ran a consistent 205 (summer) 215 (winter). 248 is definitely too high.
 

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White Diamond '03 DHS (with DTS floor shift)
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87,118 Posts
Stat is wide open in summer. Partially closed in winter.
 

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White Diamond '03 DHS (with DTS floor shift)
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87,118 Posts
230 is a tad over normal. Nothing will break at 248, though that is well over normal.
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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69,504 Posts
There's another thread like this somewhere close by.........The Northstar will tolerate a 70/30 coolant mix and 18 psi surge tank which raises the boil point to 276 degrees.

Nothing in a Northstar will break at 248 degrees. Nothing. The boil point of a normal load of 50/50 coolant with an earlier 16 psi cap is around 260 degrees, 12 degrees above this "248" figure. I don't believe that the engine enters "camel mode" until above 250.......
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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87,118 Posts
Surge tank cap not sealing, water pump belt tensioner slipping, clogged purge line, low coolant (leak), breached head gasket.
 

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not anymore 2007 Lexus ES350
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7,700 Posts
dont mean to hi jack a thread but figured whyll we where on the topic of what is normal temp id figure id ask
whyll the Mechanic is doing my Head gaskets this week is there antyhign that he can instal whyll he has it apart that will make it so i can have a digi read out on my temp just curiouse like are there units that can be installed so i can have somthing that reads what the tru temp is and not just the needle ttelling me where its at but something giving me numbers
 

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01 Eldo ETC, 02 Deville SOLD!
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1,815 Posts
Not sure if the '95 supports it but there are ways to program the DIC to show the coolant temp. Get your hands on a factory manual, and check out the DIC readouts and how you can change what shows there. I have the digital temp in the sequence on my ETC.
 

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not anymore 2007 Lexus ES350
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7,700 Posts
Not sure if the '95 supports it but there are ways to program the DIC to show the coolant temp. Get your hands on a factory manual, and check out the DIC readouts and how you can change what shows there. I have the digital temp in the sequence on my ETC.

its nt a 95 its a 2000
not sure where to get my hands on a book anyone know anyone who has it or does anyone know how to program it like that
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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69,504 Posts
Can't be done on a 2000+ - the unmarked gauge is IT. (....or spend $169 and go to www.scangauge.com)

GM/Cadillac Factory Service Manual: $135 (2 huge volumes) from www.helminc.com or try a search on eBay - they show up from time to time at prices from $40 to $120.
 
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