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Thread: 2011 challenger start up noise
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Old 10-18-2019, 09:31 PM   #7
Beau388
Senior Member
 
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 4,182
THOR #6411
Challengers have a HydroMax brake master cylinder. This system uses a small electric motor to boost brake pressure if the engine is not running. If the engine is running the power steering pump supplies fluid to power the brakes. That is my guess.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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