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missing at an idle

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Old May 14, 2012 | 07:37 PM
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missing at an idle

it's missing at an idle and it acts like it dont wanna take gas but once you get it going on the road it does good. the motor is a remanufacture motor it's only got 6,000 miles, new coils, plugs and wires, cam sensor, crank sensor, idle air control, mass air flow,and temp switch. If you have any suggestions on what the problem could be please let me know thank you.
 
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Old May 14, 2012 | 07:46 PM
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What are we working on?
 
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Old May 14, 2012 | 07:59 PM
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1997 f-150
 
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Old May 15, 2012 | 12:56 AM
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What motor are you working on?
4.2 v6, 4.6 or 5.4 v8!
Are there any codes set?
 
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Old May 15, 2012 | 07:54 AM
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it's a 4.6 and the only code it shows is the o2 sensor but it's got a new one in it
 
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Old May 15, 2012 | 11:39 AM
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Which O2? Problem in the "circuit".
 
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Old May 15, 2012 | 11:55 AM
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What is the code?
You don't change the sensor for the code unless the code say it's heater circuit is in fault or some direct sensor fault.
The codes shown are the only way the system has to tell about faults with other areas of the motor involving fuel and air.
If you want help, stop being so tight with info and tell it all.
It as taken 6 replys to even get this far and still we have nothing to go on other than what motor you have and an Ox sensor 'issued' code.
 
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Old May 15, 2012 | 08:19 PM
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the code was the heated o2 upstream but we replaced it.
 
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Old May 15, 2012 | 09:42 PM
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I give up!
 
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Old May 16, 2012 | 01:14 PM
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ok thanks for your help anyway.
 
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