Nissan Patrol heater has stopped working

The radiator on my 2002 Nissan Patrol was leaking, so I put radiator weld into it. However, a few months later, the heater stopped blowing warm air, could this be a faulty thermostat?

Asked on 16 July 2014 by RJG

Answered by Honest John
The radweld could have blocked something such as the valve to the heater matrix.
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