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Why isnt the coolant surculating through the radiator to thethermostat?

(1990 Pontiac Grand Prix)
in North Liberty, IN on August 07, 2013
all new parts are as follows... water pump, fuel pressure reg., thermostat. p0155 car starts, purs then dies when temp. reaches 200 then will only start when cools
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on August 08, 2013
Any other codes? P0155 should not cause your problem! Has nothing to do with engine temp. just the heater circuit to the O2 sensor. More testing needed!
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on August 08, 2013
Any other codes? P0155 should not cause your problem! Has nothing to do with engine temp. just the heater circuit to the O2 sensor. More testing needed!
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