Question about 1991 Peugeot 405

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Van has new rad on all pipes are hot including the pipes into the bulkhead although the out let pipe is warm, temp gauge in dash working normally, have flushed out the system for blocks everything coming out clean and flow is good, is it the matrix or is there an air lock, if so how do i get rid of it,,,

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YOUR problem could be either the air valve that opens the heater from hot to cold and is worked by vacuum and if the pipe is split then you wont get the heat etc.
also change the thermostat and open the heater to hot before bleeding the coolant system..

Posted on Oct 07, 2009

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