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Engine does not get hot enough for thermostat to open
2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Engine does not get hot enough for thermostat to open
1999 dodge ram 1500 5.2 engine will not get hot enough for thermostat to open. Had 195 only got to 189. Put 180 only gets to 178. New water pump. Flushed and back flushed entire cooling system. And replaced fan clutch. What is going on. Please help!
How are you measuring the actual temp? Cover the radiator with cardboard to varying degrees, to see if you can get it to open. Also, heat the thermostat in a pot to make sure it works.
Using a thermostat lower than that required by stock masks the symptoms.Always stick with a stock thermostat unless you're running a tune and have been directed to use something different.
If possibility of air in the system how to purge I've tried everything front of truck on ramps and all. Been a mechanic for 13 years have never had this much trouble.
More likely, the thermostat isn't closing fully, or, water is able to leak past it to quickly for the engine to ever get up to temp. Use a Stant SuperStat, to make sure it actually has a better than even chance of working right.