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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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Old Feb 25, 2009 | 10:07 PM
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quick question

hi i have an 85 f150 302 auto 2wd and the emission light is on. what should i check to see what is causing this thanx
 
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Old Feb 25, 2009 | 10:35 PM
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The CHECK ENGINE or SERVICE ENGINE SOON dashboard warning lamp is referred to as the Malfunction Indicator Lamp (MIL). The lamp is connected to the engine control assembly and will alert the driver to certain malfunctions within the EEC-IV system. When the lamp is lit, the ECA has detected a fault and stored an identity code in memory.

Does it say "check engine" or "service engine soon".
 
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Old Feb 25, 2009 | 10:36 PM
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this was mentioned a few pages back. with our trucks, the light simply comes on periodically. nothing to fix. and no computer to pull codes from.
 
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Old Feb 25, 2009 | 10:38 PM
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that is if its the emissions light up near the right signal light
 
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Old Feb 26, 2009 | 05:45 AM
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This is just a timer and is called the "extended useful life" sensor, on my truck is up under the dash above the steering column near the chime.
Just another reason to get your truck in to the dealer for a service and inspection.
It can be reset by depressing a button with a pointy tool.

Let me see if I can find my post, or do a search for yourself.

It's easy to do.
EDIT:
Here you go....

https://www.ford-trucks.com/forums/s...73&postcount=6
 

Last edited by ArdWrknTrk; Feb 26, 2009 at 06:41 AM. Reason: add link to procedure
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Old Feb 26, 2009 | 09:29 AM
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thanx guys for the quick response
 
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