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Old 08-30-2016, 04:44 PM   #4
fdryer
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Join Date: Jan 2006
Location: NYC
Posts: 41,480
 

2003 L-Series 3.0L Sedan
Default Re: Throttle body problem?

Cruise control is a secondary function and should never pull throttle open when cc is OFF, broken, whatever. Throttle control is between the gas pedal and throttle body. CC is never a priority to control throttle position when its not used. The cc cable should never pull throttle open unless cc is ON and SET, using cc as a secondary means of throttle control. If the cc cable is tight without any slack, something is wrong and preventing throttle from closing to normal idle settings. Be aware, if some part of cc is broken like the bracket holding the cc module, you may have a safety issue that may cause unintended consequences like an engine runaway. Disconnecting power to cc and cable to throttle ensures you are the only one to control throttle position, not cruise control.

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