94 Explorer-acts like starving for fuel when accelerating, but.....

When I accelerate hard, as in pulling out into traffic, the engine
coughs and sputters. Loss of power. When I ease off then the engine
operates normally. This basically happens over 2000 RPMs.

I've added fuel additives, injector cleaners, octane boosters, you
name it. The performance did improve somewhat. At least it quit dying
when I accelerated. When that was happening, I would pull over and
restart it, sometimes it would take a while and others it would start
right up.

I have installed new fuel pump and replaced fuel filter. Fuel pressure
is constant at 30PSI. Fuel pump relay OK. When I jump the relay as in
remove it and and add a jumper for continuous operation the pressure
continues to increase up to 40PSI. Vacuum tested OK.

Tested the coil pack and Ignition Control Module. Tested OK .

Replaced PCV, EGR, and a few other items.

Also it idles a little rough, intermittent misses, but smoothes out as
I accelerate, slowly of course.

This happened once before, but stopped after it sat over night.

By the way, on the freeway I can get it up to 85MPH, but if I stomp on
it, it cough and sputters until I ease off.

Appreciate any suggestions.

Thanks

Jim
.

Relevant Pages

  • Re: 94 Explorer-acts like starving for fuel when accelerating, but.....
    ... Easy to replace - the air filter. ... coughs and sputters. ... I have installed new fuel pump and replaced fuel filter. ... it cough and sputters until I ease off. ...
    (rec.autos.makers.ford.explorer)
  • Re: Solar Foundry/Solar Forge--Speculation on Future Space Industrial Processes
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  • Re: WTF
    ... At the minute my MK2 is cheaper to fuel than this thing by about a halfpenny a mile... ... Accelerate less, lift off sooner, avoid braking..? ... Engine efficiency isn't the same as fuel efficiency... ... Actually given correct fueling engine efficiency at WOT and at the rpm that vgives the best brake mean effective bresswure IS the most fuel efficient given that you have a gear suitable that this coincides with best aerodynamic efficiency ast your chosen speed. ...
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  • Re: WTF
    ... pretty much any petrol engined car driven hard is just lies. ... The digifant engines are shockingly good on fuel. ... The harder you accelerate the sooner you can lift off. ...
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  • Re: The Mileage Miracle
    ... the hills and keeping a stead throttle and not a steady speed. ... A vacuum guage works wonders also. ... I suspect that a similar technique works to increase fuel economy/range for cars, ... You want to keep periods of high fuel flow as short as possible (in other words, if you need to accelerate, do it as quickly as you can). ...
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