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1992 chevy silverado 1500
02-15-2014, 05:32 PM
Post: #1
1992 chevy silverado 1500
I have a 92 siverado 1500 5.7 auto in washington state that has had overheating issues now for a while. I have replaced the water pump, sending unit, thermostat twice. The cooling fan is always on. Even when engine is very hot, radiator and all hoses are cold. Is this a clogged radiator?
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02-15-2014, 08:27 PM (This post was last modified: 02-15-2014 08:28 PM by Rupe.)
Post: #2
RE: 1992 chevy silverado 1500
Could be.

Try feeling the heater hoses. That will be a good indication of engine temp. There's also more than one sending unit for temp. Could be the one for the dash gauge is NG (side of the left cyl head) or the wire is shorted out causing a high reading. The sending unit with 2-3 wires and a weather-pac connector is for the computer. Which one did you change?

BTW, the stock radiator fan is not electric and a mechanical one (on the water pump) runs all the time. Could that be another issue? If the mechanical one has a clutch on it let me know and I will tell you how to check that.
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