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

Sputtering,missing and running rough while accelrating

Old Nov 12, 2011 | 01:22 PM
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Sputtering,missing and running rough while accelrating

I am having a problem with the 86' in my sig. I will preface that the truck sits alot. a few months ago I noticed that when accelerating the truck was sputtering and missing and occasionally it was backfireing through the intake. At first it would get better when warm but now it never stops. I cleaned the throttle body and changed the cap and rotor. It is the EFI 5.0. It seems slightly better now but still not running right. Anyone have any ideas on where to check first. I checked to make sure all the boots were tight on the plugs and no damage to the wires that I can see. Thanks, Dan
 
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Old Nov 12, 2011 | 03:39 PM
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First thing you should do is pull the codes.
 
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Old Nov 12, 2011 | 09:07 PM
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Shouldn't there be a check engine light on then or does it even have one?? I guess I could take it up and let them plug it in at advance and see?? Maybe the bulb is burned out it is so old. Lol.
 
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Old Nov 12, 2011 | 09:53 PM
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First year for a CEL connected to a computer was 1988.

These use OBD 1 computers, the connectors are under the hood.

Ford Fuel Injection » How To Run a Self-Test
 
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