Why would my 3.4 run 20 to 30 degrees hotter. At the bleeder

Asked by Tom Aug 26, 2020 at 04:37 PM about the 2003 Chevrolet Impala

Question type: Maintenance & Repair

Replaced water pump thermostat
Coolant temp sensor. Temp gun aim at
the bottom hose then at the bleeder
than at the small hose off the bleeder it
is like?a 20plus difference in temp.
Rest of  motor is same temp. For
instance 200 at the bleeder rest is
around 175- 180 then putting strain on
motor such as com climbing vail pass
Colorado jumps up to 230 240. Whole
motor. Any thoughts would be
gratefully appreciated.

1 Answer

F_O_R answered 4 years ago

The water in the bottom hose has passed through the radiator so it should be a lot cooler. 240 is high. Do a complete cooling system service and add some Water Wetter.

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