Silverado 5.7 liter 350. Replaced radiator, thermostat, water pump and gauge sensor. Engine temperature runs at 190 at idle. At 2000 rpm temperature runs to 250-260. Have checked thermostat in boiling water and it works. No sign at all of blown head gasket with emissions, power, smoke, etc. Will idle all day long at 190. Seems to be a flow problem somewhere? Could it be new water pump?
Fan and clutch good too.
have the same problem?
Saturday, April 8th, 2017 AT 12:30 PM