Question about 1991 Ford F150

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Just changed battery. Check engine light comes on

Just changed battery. Check engine light comes on and engine begins to run rough at idling speed. Engine light will go off, but will come back on. Any suggestions?

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You need a scanner to see the code for whats wrong,unhooking the battery for 15 or 20 secs will reset it to

Posted on Oct 04, 2009

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emissionwiz
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SOURCE: engine runs rough at certain speeds 3.0 v6 flex-fuel 1999 ranger

Check and see if the EGR valve is leaking, to check this spray water on it at idle, if the water steams off the valve is leaking and is the source of your problem, also are you sure you hooked the new DPFE sensor up right? re-check it..

Posted on Nov 23, 2008

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2 Answers

Engine runs rough at certain speeds 3.0 v6 flex-fuel 1999 ranger


Check and see if the EGR valve is leaking, to check this spray water on it at idle, if the water steams off the valve is leaking and is the source of your problem, also are you sure you hooked the new DPFE sensor up right? re-check it..

Nov 23, 2008 | 1999 Ford Ranger SuperCab

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