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Old 08-06-2009, 05:19 PM   #6
fdryer
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Join Date: Jan 2006
Location: NYC
Posts: 45,380
 

2003 L-Series 3.0L Sedan
Default Re: Rough Idle Wont Stay Running

The coolant light is from the float inside the coolant reservoir sticking or broken; remove the container for a thorough sloshing of HOT water and detergent to remove built up scum that may be causing the float to stick.

Were the plugs and wires ever replaced? Ignition module and coils removed and cleaned of corrosion including the mounting bolts? The ignition system is grounded so a clean corrosion free ignition module/coils ensures less misfiring from the ignition system.

When the ects was replaced did you check the two-wire connector for corrosion? This corrosion has the same effect as never replacing the older plastic ects - rich running all the time.
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