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AZTechBrian, ASE Certified Technician
Category: Nissan
Satisfied Customers: 708
Experience:  Owner
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The heater no produce heat, all is working the pipe that

Customer Question

the heater no produce heat
JA: Have you checked the coolant level? Have you checked to make sure the thermostat is working?
Customer: all is working the pipe that come out from the heater one is hot and one is not. i was thinking the problem is in the heater control valve
JA: What is the model/year of your Nissan?
Customer: 2003 model 2.5 liter petrol
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: at the moment only tuch the pipes and find one is hot and one is not.
JA: Anything else you think the mechanic should know?
Customer: before was running in LPG and 2 years ago is been remove the LPG and now running on petrol.
Submitted: 1 year ago.
Category: Nissan
Expert:  AZTechBrian replied 1 year ago.

Hello. The problem is that the heater core is clogged and will need to be back flushed to correct it. You can do that by disconnecting both hoses and running water through the side that was cold and out the side that was hot. This is a common problem.