Loud tapping noise under hood of my 06 chrysler 300c
There is loud tapping noise uner the hood of my 2006 chrysler 300c it sounds like its coming from the engine but im thinking its a loose valve cover or something that has to do with that can anybody answer that? if so what should i do?
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There are two relays in the integrated power module under the hood in the engine compartment , radiator fan high/low control relay an radiator fan high relay . They are controlled by the front control module . The ECT - engine coolant temperature sensor is an input to the PCM -powertrain control module , this module has logic programmed into it an when it sees a signal from the ECT ,it knows what the temp. of the engine is ! At 195 to 223 degrees the PCM commands the cooling fans on ! I won't get into the whole thing of serial data communication networking but the PCM sends a command to the module that controls the cooling fans ! You best bet is to take it to the dealer or another repair facility that has the tools an knowledge to diagnose the problem ! Aren't electronics great !
Open the hood and allow the gremlin to escape. He only wants to return to his family. NO GREMLIN? Open the hood, and utilize your ears to determine where the tapping is coming from. Do not place your ears next to anything hot, or near the cooling fans. Once you have pinpointed the source of the tapping noise, REPLACE THAT PART.