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Old 01-13-2004, 20:39   #1 (permalink)
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frown 95 f250 not running well

i have a 95 f250 with a 460 in it....i havent had any problems with it til lately when..once it warms up will not go past 3000 rpm and it is extremely sluggish...we changed plugs, plugwires, airfilter, and still same problem. it runs ok when its cold but once it starts to warm up it starts running crappy again...anyone know what this problem could be?
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Old 01-15-2004, 12:35   #2 (permalink)
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Re: 95 f250 not running well

anyone?
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Old 01-17-2004, 15:50   #3 (permalink)
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Re: 95 f250 not running well

I had a similar problem with a Jeep I used to own. It turned out to be the one of the heads. Needed to be completely reworked.
Good luck!
Eric Y.
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Old 01-17-2004, 22:13   #4 (permalink)
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Re: 95 f250 not running well

i have no clue about your problem mtx1 but if you are just looking for ideas, here are a couple things that will affect engines when the warm up.
1. ignition coils (most generally loss of spark when going bad)
2. module and or stator in the distributor ( again loss of spark, replace as pair)
3. heads or intake manifold (will allow coolant into cylinders after warmup, rare conditions)
4. there are numerous valves and that will open after warmup and could be the cause of a vacuum leak or similar.
i would start with #4 see if you can plug a line and make a difference but do it one at a time.
maybe while you are looking around you will come up with something.

let us know any more details about your problem that you can give !
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Old 01-18-2004, 04:18   #5 (permalink)
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Re: 95 f250 not running well

try http://fordmuscle.com.
more users of the big motors over there...

Is it an EFI motor?
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