heater is warm but not hot?

2007 SUZUKI FORENZA
126,000 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
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GLENN88
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car temperature is running normal heater is warm but not hot,then all of a sudden it blows cold air all the hoses are hot to touch except for one of the heater core hoses the one on the driver side of the car
Feb 26, 2015 at 4:06 PM
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HMAC300
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This is common when the heater core get clogged up which you can remove one of the heater hoses and use a garden hose to help flush it out or the coolant level is low and you have a leak somewhere here are two guides to help you fix the problem.

https://www.2carpros.com/articles/car-heater-not-working

and

https://www.2carpros.com/articles/car-is-leaking-coolant


Please go over these guides and get back to us.
Feb 27, 2015 at 9:30 AM