I have a 2002 mercury mountaineer v6 4.0,it runs fine when I first start it but after it reaches proper temperature it sputters out and dies then I have to wait 5-10 min before it will start again and its not overheating?
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Ford has had some idle air control (IAC) valve problems and usually they don't set the check engine light. A faulty IAC can cause hard starting, stalling, and lack of power. To be sure, scan the vehicle for related diagnostic trouble codes (DTCs). You may also have to check your vehicle's fuel pressure. Low fuel pressure could cause the same problems.