Thread: '91 300CE (M104) - What is the "throttle valve switch"?
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Old 08-21-2010, 04:59 PM
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Gilly Gilly is offline
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Look for a small microswitch near one of the throttle levers on top of the intake, has a small roller on the end and opens (or closes) when you take the engine off idle.
Gilly
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