FordTaurus2003DOHC |
07-11-2010 03:15 PM |
2003 Ford Taurus DOHC idles rough
2003 Ford Taurus DOHC, 100,000 miles: After the engine runs for about 2 minutes at idle, the engine shakes and surges, rpm varies at idle and eventually stalls. At driving speeds engine runs fine, plenty of power. Engine light on. Codes P0171, P1151 & P1131. Running lean? Shortly before this problem developed put in new air cleaner, fuel filter and spark plugs. After problem put in new wire set, upper oxygen sensors and cleaned the mass flow sensor. No obvious vacuum leaks. What can be the problem?
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