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Q: I am working on a nissan Maxima that I have replaced the IAC, pigtail is burnt. on 2000 Nissan Maxima

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and idle will not come down, do you have any suggestions on what to try next. I replaced the fuse already and have power to the plug. Thank you, Brian
(1) Answer
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Have you been able to repair the electrical connection. I wonder if the electrical connection issue could have caused the computer to fail. Look for a vacuum leak that could cause a high idle. Is the Check Engine/ Service Engine Soon Light on? If so the computer in your car is going to have relevant information stored in its memory which will help figure out what is going on. A scan tool is needed to retrieve this information. A professional grade scan tool allows key engine sensor data to be analyzed right off the scan tool without having to do intrusive testing at each sensor. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online