Having problems with your 2001 Pontiac Aztek ?

Engine heats up blower works but no heat. - 2001 Pontiac Aztek

Posted / edited by AnonymousUser on : 20-11-2017

Answers :

Hi
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\015\012\015\012Thanks\015\012for using FixYa. Try and check if the heater core is plugged. Find\015\012the 2 coolant lines going to the heater core. They are right next to each other\015\012with approx 3/4" hoses going to the engine. Now, warm up the engine with\015\012the heater on max (don’t turn on the fan). Next, feel if the hoses are warm\015\012(maybe HOT!) If they are not warm, then you most likely have a plugged core. A\015\012back flush will resolve the issue. If your hoses are warm, turn on the fan. One\015\012hose should go cold (or cooler than the other, actually should be about the\015\012same temp as the air from your air vents, if there is a plug). If both hoses\015\012are hot and stay hot, and you have no heat, then the problem is not with the\015\012heater core but with the blend doors.
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\015\012\015\012There are\015\012electric motors that operate the "blend doors" inside the dash\015\012directing air flow from the heater core and A/C evaporator core to the cab of\015\012the vehicle. If you feel a drastic difference in one of the radiator hoses,\015\012then try replacing the thermostat and see what happens. If all the heater and\015\012radiator hoses are pretty much the same temperature I would suspect a control\015\012problem in the dash controls or in the blend door operation. You’ll need to\015\012remove the dash to check these.
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\015\012\015\012Please do\015\012accept the solution if the issue is resolved or else revert for further\015\012assistance.
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\015\012\015\012Thanks
\015\012\015\012Rylee
Repair Help & Product Troubleshooting for 2001 Pontiac Aztek

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