Question about 1987 Ford F 250

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Idles at around 3000 rpms and doesnt come down it just started doing it, dont know what to do?

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Have your idle valve check it could be stuck or some vacuum leaks on your intake manifold as more air intake than what is necessary at idle state

Posted on Jan 31, 2010

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Change the egr valve i just did it on my 1995 and it idles at 1000 rpm it was at 3000 at 1st
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I have a 2001 chevy camaro 3.8l v6 my car starts but idles rough like around 1000 rpms and i can drive it but when i go and step on the gas it bogs down and doesnt go over like 3000 or 3500 rpms and when i...


Having a qualified repair shop do diagnostic's is probably what you should do , rather then replacing a bunch of parts that are not needed . Testing fuel pressure an flow , engine managment sensor input's to the PCM - engine computer . Do you know what a professional scanner is ? mass air flow sensor data , fuel trims ,short an long term , are the O2 sensor's switching normally ,

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Have a 96 camaro 3.8 V6 engine that on start up revs up over 3000 rpms and doesn't rev back down already replaced throttle body sensor any suggestion?


Did you check for vacuum leaks? Get a can of some flammable brake cleaner and start spraying it near all of the vacuum lines and see if it idles down. Also spray it around the intake when you hit the right spot it should idle down. Then you know where your problem is.

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it sounds like a vacuum leak to me, my car had the same problem but when i changed the hose that connected the valve cover to the fuel injectors the rpms dropped back down to about 800 rpms

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