Ford truck dies sometimes when I stop?

J

JeremyR

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I have a 1997 F150 4x4 with a 4.6L sometimes when I stop or am ideling the RPMs will jump up and down then it might die. If the AC is on it wont hardly ever do it. I have already replaced the fuel filter,IAC,EGR,EGR pressure sensor and the throttle positioning sensor. check engine light is not on and it has no codes.
 
sometimes the map sensor will make it do that. test it to see if it is bad. It also could be the o2 sensor.
 
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