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ford 460

glyn
I have a 1994 RV with a ford 460 engine,done about 110000 miles.Went to start it yesterday.Left it running for a while left my son with it while I ran an errand,while I was away he said it literaly reved up on its own he had to turn it off thought it was going to blow up.Any of you mechanics out there got any ideas.Does an engine this old have a computer.
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16 comments

Date Votes
  • glyn
    I have just been offered a ford RV,1984 very nice condition with 57000 documented miles on it.My question is not about the RV which is immaculate but the engine.What is the Ford 460 like what do I need to look for.It sounds great just need some hints on it.Thanks fellas.
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  • Mk 19
    all engines have had computers since 1987, so you have one
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  • spryor
    Dunno, but i had a generator do that a few years back...still don't know what caused it.
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  • glyn
    Thanks eor the fast reply MK19 but I put in the wrong year it is 1984.
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  • TrinityScrimshaw
    Sounds like something going haywire with the intake. Is it electronic fuel, or carburetor? I had this happen once and it was the automatic choke on the carburetor malfunctioning. I don't think it has anything to do with the fact it is a 460, as much as it does the age & mileage.

    Trinity +++
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  • gjshaw
    I had the 460 in my f250 and what he may have heard was the clutch fan totally engage. As you said, you left it idling and when you do that the clutch fan totally engages to cool down the engine that would normally be cooled by air flowing thru the radiator if you were moving. Mine did it alot and sounded like it was taking off the first time I heard it.
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  • HandLoad
    Engine that old is carbureted - means that as it sits there, warming up, the choke is stuck until someone steps on the gas - will go to a high idle maybe 2000 rpm or so unless someone steps on the throttle.
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  • Cubslover
    Maybe lost a vacuum line.
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  • reloader44mag
    Have you tried to start it and let it run since the last episode. It sounds as if the choke is the problem. Assuming the choke is not of the manual type. If you can get at it spray the carb down with cleaner and see if that helps. If not, you may be looking at a new electronic choke assembly.
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  • dheffley
    I cannot imagine what would or could make a carburated engine rev up without some mechanical manipulation of the carburator. I would be very interested to see what you find out.
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  • iceracerx
    So, what happened when you restarted it?
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  • whiteclouder
    I'm not casting aspersions, honestly, but I'd want to hear it myself. What a youngster perceives as a reving engine, mught well be something else.

    Clouder..
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  • Ray Boone
    When I start my 460 in an '86 F350 it idles until it loads-up, then if I'm not there to push the throttle, it dies.
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  • glyn
    Havnt tried to start it since been away for the weekend,will try again today but the choke sounds about right.Hey Whiteclouder my son would love to be called a youngster again he is 36 years old.Mind you he is like his dad 12 mentally or so my wife said.
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  • whiteclouder
    quote:Originally posted by glyn
    Havnt tried to start it since been away for the weekend,will try again today but the choke sounds about right.Hey Whiteclouder my son would love to be called a youngster again he is 36 years old.Mind you he is like his dad 12 mentally or so my wife said.

    36? That's a youngster. [:D]

    Clouder..
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  • calamitywood
    handload gave you the correct answere. All my older carburated vehicles did the same thing. Proper starting instructions for a cold engine states to press the accelerator slowley to the floor and then turn the key to start it. This sets the choke. when the engine warms up you need to give the accelerator a quick push to turn the choke down (reduce the fuel flow) then the motor will return to normal running speed.
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