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Old 08-18-2014, 08:35 PM   #29 (permalink)
ijames
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Had to go out for awhile, and right as I was leaving I realized I didn't give a complete description of the coast down test to show throttle closed vs. wot with a kill switch. If the kill switch is wired into the injectors then no fuel will be injected and the test is completely safe. If it is wired into the spark side of the ignition system then fuel will flow while the pedal is down and the engine is being driven by the car so when you turn the kill switch back on there might be a backfire from the fuel in the exhaust system, so make sure the throttle is back at idle position before restarting. If the kill switch is wired into the crank sensor then the ecm won't see pulses and won't inject fuel, so again the test is completely safe. Sorry to be so longwinded.
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