Question about 1988 Ford F 250

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1988 F-250 460 engine stalls when dribing down the road

My 460 will be running fine, then start to cut out and stall. I've replaced 2 of 3 fuel pumps. It also has a fresh tune up, any ideas on what would be causing it to stall and die? about an hour later it will start again.

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  • grounds Aug 08, 2008

    We have a similar problem, when the outside temp reaches 95-100 degrees the engine will sputter and die. Let it sit for a few minutes to a half hour and it will start again and run briefly. We have changed the in tank pump, the frame rail pump, the pump relays and the coil. All seem to give it a temporary fix but the problem comes up again. If you let the truck sit and idle the problem will arrise within about 20 minutes. During the winter fall and spring we don't have this problem.

  • okgat Mar 06, 2009

    I have an Ford F350 superduty. I have replaced the spark plugs, checked the rotor, changed the oil. When I start the truck, it will run for about 20-30 seconds and then will cut out. If I try to restart it, it won't start. If I wait for a half hour or so and try to start the truck, it starts, but repeats by quitting after about 20-30 seconds.

    Any thoughts?

    thank you,

    Rick.

  • Anonymous Mar 13, 2014

    it starts fine but when i put it in drive it starts to stall and my check engine light does not come on it just stalls

  • Anonymous Mar 26, 2014

    fine on tick over. when driving and turning engine trys to stall but hasnt actually cut out as of yet, loud noise and engine strain

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On older, carbureted engines, cold stalling (and hard starting) is most often due to an automatic choke that is sticking, misadjusted or broken. Cleaning the choke mechanism with aerosol carburetor cleaner may free up the choke allowing it to work properly again. If the choke housing as an electrical heating element, the element may not be receiving voltage when the key is on, or the element may have burned out (check resistance with an ohmmeter).

Other causes of stalling with a carburetor include an idle speed adjustment screw that is set too low (turn screw to increase idle speed rpm). The engine may stall if the idle fuel mixture screw(s) are not adjusted correctly or the idle mixture port(s) are dirty or clogged with fuel varnish deposits (clean the carburetor and readjust the idle mixture screws for smoothest idle). Stalling can also occur is there are vacuum leaks in the carburetor, under the carburetor (bad base gasket), or any vacuum hose connections to the carburetor or intake manifold

Posted on Jun 23, 2008

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All 1988 460 automotive fords were fuel injected. Carb Solutions do not apply.
Use FI troubleshooting techniques. Does it fail due to fuel or voltage?
Jumper the fuel pump pin in the computer access connector and verify pressure when the thing stalls out.
The computer will turn off the fuel pumps when the engine is not running unless in the start position or the fp pin is jumpered.
Old totally electric engines cost more to repair than they are worth unless you do it yourself!!!!!!!!!!!!!!!!!!!!!!!

Posted on Nov 14, 2009

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