Water temp on a 98 5.7 Vortec
Posted 06 November 2002 - 05:23 PM
Posted 06 November 2002 - 05:30 PM
Posted 08 November 2002 - 01:01 PM
GM now installs 195 degree thermostats. Why? Well...Physics dictates that the hotter you operate an engine, the more efficient it is, to an extent...overheating is always bad. The hotter you can run an engine, the more complete the combustion, the less emission, less wasted fuel, more bang per ounce of gasoline etc....
So...if your 98 is showing between 200 & 210...you're okay. Many folks replace the 195 t-stat with a 180 because (like me) they think YEOW! I am borderline overheating.
But the down side of that is that the computer knows what the engine is supposed to do...and if you don't let it get up to the operating temperature that the computer thinks you are supposed to have...the computer thinks that you are still warming up the motor and chokes the engine etc...
If you are not overheating...leave it alone. If it scares you, replace the tstat with a 180...and prepare to suffer fuel economy!
2004 GMC Yukon SLT 5.3 120K & counting
2007 1500 LTZ Silverado 5.3 CC sold off at 40K
2004 GMC 2500HD 6.0 CC 120K
Posted 08 November 2002 - 02:01 PM
Summer toy #1) 2004 Pontiac GTO - Impulse Blue Metallic, M6, lots of mods to create senseless levels of power
Summer toy #2) 2006 Cadillac STS-V - Light Platinum Metallic, A6, also lots of mods to create senseless levels of power
Daily Drivers/Vehicles subject to the wrath of Mother Nature:1) 1999 Chevrolet Suburban LT 4x4. 2) 2007 Chrysler Town & Country Limited 3) 2009 Chevrolet Impala SS
Posted 10 November 2002 - 11:19 AM
Posted 11 November 2002 - 10:08 PM
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