Question about 1999 Pontiac Grand Am GT

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1994 2.3 lt grand am. i have replaced the water pump thermostat and heater core car still heats up top rad hose is cold and when you remove the top heater hose interior car heater starts blowing hot air but when u replace that hose the air gets cold inside car and car motor temp goes up over 140 can anyone help?

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  • ccn7 May 11, 2010

    If radiator pluged might cause that, but also air pocket in system, are you sure you got the heater hoses on right?

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Change the upper hose and if thats no good change your radiater it maybe no good with this car it happens alot

Posted on Feb 21, 2009

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