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Won't idle

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Old Sep 24, 2015 | 08:13 PM
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Won't idle
I have a 87 f150 with the 351 Windsor and the other day my brother was driving it and it had quit at a stop light. He started it up again and got it home, however it doesn't seem to wanna idle. I am suspecting ignition issues? Ran great before this little incident happened. I replaced the distributor cap today and that didn't seem to help. It has full power going down the road but just won't idle. Sounds like an old tractor.. Any ideas?
 
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Old Sep 24, 2015 | 08:53 PM
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Is it throwing any fault codes? Check you throttle position sensor.
 
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Old Sep 24, 2015 | 08:56 PM
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It is not. I've only owned it for a few months as I bought it from an elderly guy who took very good care of it. I replaced the wires and plugs right when I got it, ran great up until the other day. Now it won't idle..
 
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Old Sep 24, 2015 | 08:59 PM
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What brand name of plugs & plug wires?
 
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Old Sep 24, 2015 | 09:01 PM
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Autolite I believe and wires I got from Napa
 
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Old Sep 24, 2015 | 09:02 PM
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Originally Posted by Ford4you
It is not.
Did you actually run the KOEO tests or just assume there are no codes because the CEL is not on?

CEL = Check Engine Light
 
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Old Sep 24, 2015 | 09:04 PM
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I did not run any KOEO Tests
 
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Old Sep 24, 2015 | 09:04 PM
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Also, as long as you plugs are copper core, you should be fine. Did you route your plug wires correctly? Just trying to rule some things out.
 
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Old Sep 24, 2015 | 09:08 PM
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After replacing the distributor cap tonight I didn't run them in the correct firing order and wouldn't start but I looked in my repair Manuel and got the correct firing order and it starts now.
 
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Old Sep 24, 2015 | 09:45 PM
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Good. Glad to hear you got it back on the road.
 
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Old Sep 24, 2015 | 09:46 PM
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Remove and clean the idle air control valve with carburetor cleaner, it's not uncommon for them to stick closed and cause an abnormally slow Idle.
 
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Old Sep 24, 2015 | 09:46 PM
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Now I just have to figure out why it won't idle...
 
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Old Sep 24, 2015 | 10:16 PM
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Old Sep 24, 2015 | 10:18 PM
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Do you happen to know where it is located on the 351 Windsor?
 
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Old Sep 24, 2015 | 10:19 PM
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Don't mind my signature. The photo I posted is a 351.
 
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