truck is making a humming noise - Dodge Cummins Diesel Forum
98.5-02 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect..NO ADVERTISING .

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post #1 of 1 (permalink) Old 02-27-2010, 10:53 AM Thread Starter
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truck is making a humming noise

my truck makes a humming noise under the dash/hood right beside the firewall everytime i push the brakes when its cold outside. could this be from the master cylinder being cold?......or something more serious?.......cause it does finaly stop after the truck runs for bout 15-20 mins

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