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Engine dies in drive

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Old Nov 3, 2014 | 09:59 AM
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Engine dies in drive

I have a '94 F-150 5.0 with AOD transmission. When I put the truck in drive the engine dies. I can drive it in reverse ok. Engine runs in park and neutral. Please help!!
 
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Old Nov 3, 2014 | 10:19 AM
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Does it die immediately or do the rpms go low then it dies?
 
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Old Nov 3, 2014 | 11:35 AM
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It dies immediately
 
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Old Nov 4, 2014 | 12:50 PM
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Sounds like you might have a vacuum leak or or maybe need to clean the IAC. Start the motor and disconnect the IAC, if the engine starts to stumble the the IAC is working.
 
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Old Nov 4, 2014 | 01:44 PM
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Thanks Mike. I am not sure what the IAC is. Can you help me some?
 
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Old Nov 4, 2014 | 06:47 PM
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The IAC is the Idle Air Control. It's job is to maintain a steady idle rpm by varying a air bypass around the throttle body butterflies. My engine is a 351W, but it should be in the same general location on a 5.0 I believe.





1990 351W with E4OD, Cruise, and A/C
 
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Old Nov 5, 2014 | 09:25 AM
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Thanks Island Time for the information and the great picture.
 
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