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Q:

why would my truck run just fine then start to idle rough? on 1996 Ford Ranger

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
It runs fine plenty of power idles fine...After turning it off then on a few times it will run fine then start to idle rough? And run rough then starts to run fine again.
(2) Answers
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It could be many things, unfortunately and without experiencing the problem first hand or being able to do some basic diagnostic tests its hard to say. You may have an electronic idle control problem, a sticking EGR valve, a vacuum leak, or many other things. Again basic tests need to be done, your car has on board diagnostics using a scan tool may quickly identity a problem if the tool is capable of reading live sensor data.
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That's a tough question. It could be many things. I can tell you what I would check first. Is the ignition system in good working order? Is there a vacuum leak? Is the IAC Motor working correctly ? When it's running fine is the idle high ? I would recommend that you fine a good shop that you can trust and let them take a look at it
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