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Post by JC on Feb 19, 2013 18:20:14 GMT -5
What motor problems is your obs having?
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96obs
Diesel Rookie
Posts: 38 
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Post by 96obs on Feb 26, 2013 20:44:20 GMT -5
I've got a 96 7.3. All stock besides 4 inch exhaust and aftermarket filter. Sometimes when its warmed up the idle will slightly go up then down. Kinda sound like when you turn AC on and off it will drop idle a little. But I noticed it most when it warm like sitting at a red light. It don't do it while I'm driving. Is this normal?
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Post by docweld on Feb 26, 2013 21:00:43 GMT -5
do you have your heater switch on defrost? defrost will make your AC cycle. someone can correct me if I am wrong.
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96obs
Diesel Rookie
Posts: 38
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Post by 96obs on Feb 27, 2013 16:52:48 GMT -5
Nope. It will just do it occasionally. I'll check and make sure nothings on.
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96obs
Diesel Rookie
Posts: 38
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Post by 96obs on Feb 27, 2013 17:58:14 GMT -5
It actually revs up a little then comes down, then revs a little and comes Down. Its just enough to see it move the rpm hand a little.
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Post by T-Bone on Mar 4, 2013 8:47:43 GMT -5
Mine did that for awhile, and it went away... now it came back a few days ago, When ever i plugged my cell phone charger into the ac outlet it would drop real low in rpm (truck still running) then go back to normal, about 45 seconds later it would do it again... When i removed the cell phone charger it went away.
Tom
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96obs
Diesel Rookie
Posts: 38
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Post by 96obs on Mar 4, 2013 9:04:12 GMT -5
Ya I'm just gonna look the other way until it breaks. But I don't think its a major problem because when I bought it I drove it 4 hrs from Ohio to Knoxville, then drove it another 4hrs round trip and drive it everyday. If there was something wrong it would have broke by now.
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Post by docweld on Mar 4, 2013 9:57:20 GMT -5
What I was asking was is you heater switch set on defrost, not so much if you have the fan switch on? the reason I ask my 1999 Ford contour will cycle the AC pump on and off if the switch is on defrost. It is getting real bad now that I have to keep the switch on the off position to keep the rpm's from going up and down even when I am driving now. Something is wrong but I have not had time to look at it.
Try putting your defrost switch in the "OFF" position and see if it keeps doing it and let us know.
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96obs
Diesel Rookie
Posts: 38
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Post by 96obs on Mar 4, 2013 11:23:52 GMT -5
It does it even with nothing on. No lights, no AC, nor radio, nothing plugged in. Not sure what it is. I can't post videos or I would. But you barely hear it in the video. It is very slight. I'm probably over thinking it.
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