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1996 Cadillac DeVille Question: Is it common for the plastic heater core box on the firewall to disentegrate?

 

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theimber, Columbia, MO, February 12, 2013, 09:39
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I started smelling burning plastic from the engine compartment then I discovered the plastic housing is disentegrating due to engine temperature exposure. Bit of plastic are contacting the exhaust manifold. Is there a solution?

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