heater core

Asked by Jan 16, 2016 at 09:58 PM about the 2003 Chevrolet Malibu LS

Question type: Maintenance & Repair

Which line on the heater core is the inlet line the
top one or the bottom one

3 Answers

80

cant tell you for sure, but if you pinch closed one of the soft hoses coming off the heater core and then warm the car up to normal operating temp. If only one of the lines feel hot to the touch you just found the inlet because you must have pinched the outlet because hot anti freeze isnt able to leave the heater core and heat the hose attached to outlet of heater core.

80

Or just pull both hoses and start car and see which hose has anti freeze coming out?

73,655

If this is all hooked up and running jim6789 first answer is a good idea.

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