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

86F-150 warning

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Old Jul 6, 2005 | 10:11 AM
  #1  
Trial and Error's Avatar
Trial and Error
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86F-150 warning

86 F150 emissions warning light is on. Anyone know how to turn it off? Neither my owner manual nor my repair manual tell me anything about turning it off. Does it just go out after a while or what? I removed the bulb until I get an answer.
 
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Old Jul 6, 2005 | 02:38 PM
  #2  
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83stepside32784
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disconnect positive and negative battery cables that should reset it it works on my 2000 F-150 so it should work on an 86
 
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Old Jul 6, 2005 | 02:53 PM
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Red face Pulling the bulb doesent fix it!

You need to find out what has happened to cause the light to come on. I guarantee you that you are going to have performance issues, and / or worse gas mileage if you dont check things out.
 
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Old Jul 6, 2005 | 03:47 PM
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As I understand it, when the emissions light comes on in a 1986 model, it only means that scheduled maintenance should be done, i.e. replace two or three emission components, etc. It is supposed to come on at 60,000 mile intervals + or - according to actual run time. I have already replaced everything which can be replaced on this truck in the past 2 years so it shouldn't need anything at all. As for disconnecting the battery, I have tried that and it doesn't work on this truck. Thanks for the replies.
 
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Old Jul 6, 2005 | 03:58 PM
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I think that yours was one of the first to have a computer controlled system on it. Others here know more about the 1986 than I. Best of luck.
 
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Old Jul 6, 2005 | 04:26 PM
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trial and error, check your other post on this. And your right, its a maintanence(sp) reminder.
 

Last edited by 220k-f-150; Jul 6, 2005 at 04:29 PM.
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Old Nov 6, 2005 | 09:09 PM
  #7  
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86 f-150

unplugged my computer control 5 years ago , no prop on check engine light.....
 
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