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<blockquote data-quote="skinny_pedal" data-source="post: 1459661" data-attributes="member: 16039"><p>The throttle bore and throttle plates may be carboned up. This causes the throttle to hang open preventing the throttle position sensor idle contacts from closing. When this occurs, the ECU advances ignition timing beyond the idle mode causing the problem. </p><p> </p><p>Backprobe the signal wire at the idle contacts with a meter. There should be 0 volts at idle and 5.0, 11.0 or 12.0 volts when the throttle is opened approximately 1/4". If there is voltage in the idle mode, check the throttle plates and clean them if any carbon is present. Also, check to see that the idle stop screw has not been moved. If the voltage at the idle switch does not drop to 0 volts after cleaning and adjustment, replace the idle switch </p><p></p><p>Be patient, its just nuts, bolts and wires. It can be fixed:awesomework:</p></blockquote><p></p>
[QUOTE="skinny_pedal, post: 1459661, member: 16039"] The throttle bore and throttle plates may be carboned up. This causes the throttle to hang open preventing the throttle position sensor idle contacts from closing. When this occurs, the ECU advances ignition timing beyond the idle mode causing the problem. Backprobe the signal wire at the idle contacts with a meter. There should be 0 volts at idle and 5.0, 11.0 or 12.0 volts when the throttle is opened approximately 1/4". If there is voltage in the idle mode, check the throttle plates and clean them if any carbon is present. Also, check to see that the idle stop screw has not been moved. If the voltage at the idle switch does not drop to 0 volts after cleaning and adjustment, replace the idle switch Be patient, its just nuts, bolts and wires. It can be fixed:awesomework: [/QUOTE]
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