11-11-2009, 03:05 PM
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CC Member
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Join Date: Nov 1999
Location: Pentwater,
Mi
Cobra Make, Engine: Professional Cobra & Streetrod Builder
Posts: 5,352
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Not Ranked
Rodger, an Oil pressure switch may turn off your motor if somehow you motor just quits, but it will not turn off the fuel pump.
As fAR as your switch not turning off the engine in a rear end-ala serious accident, that is highly unusual. The dealer would most likely just tell you as bad as it was, it wasn't a hard enough hit to "kick it".
Think of a TILT mechanism in a pin-ball machine, you can beat the heck out of the machine getting that last little "English" on the ball and it wont "tilt". Next time you hit it just right and it shuts off!
Most inertia switches are built on the same principle, a small internal cup of some type with a ball bearing centered in the cup. It wont "tilt" until the ball is knocked out of the cup and grounds out the system it is hooked to.
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