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Anonymous Posted on Feb 24, 2018

My 1989 f-150 idles ok and can accelerate the engine but when the engine is placed under a load such as trying to go somewhere the engine sputters boggs down and dies. Fuel pressure is between 44 and 50 psi, fuel filter is new, mass flow sensor is new. whats next

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toddgilbert

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  • Ford Master 6,360 Answers
  • Posted on Mar 23, 2018
toddgilbert
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I tried the DIY service and repair manuals from a website and it actually helped me repair
transmission problem in my jcb 3cx site-master. it wont move forward or reverse, engine is good both solenoids for forward and reverse work.
I don't have much technical knowledge but I just followed it step-wise, and works perfect! got it from www.reliable-store.com

5 Related Answers

Anonymous

  • 104 Answers
  • Posted on Aug 20, 2009

SOURCE: I have a 1995 ford taurus engine stalls when

Start with smaller problems and check the fuel pressure regulator, the mass air flow sensor for these vehicles is pretty pricy. Is the check engine light on? If so, head to your nearest auto zone and have them check for trouble codes. If the check engine light isn't on, its not likely your mass air flow sensor

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Anonymous

  • 11896 Answers
  • Posted on Aug 24, 2009

SOURCE: 95 aspire sputters and back fires when you try to

Check spark in each cylinder. You may have a bad plugwire or coil pack. Make sure fuel is spraying from every injector.
You can remove one plug at a time, plug it back into the plug wire and lay it on top of engine block, have someone else turn motor over and you can view plug to see if it is sparking. Do this to each plug. If you have one or two plugs not firing, you may have bad coil pack.

johnjohn2

Johnny Brown

  • 5763 Answers
  • Posted on Nov 01, 2010

SOURCE: Car idles rough and sputters

this sounds like theres not enough fuel preasure or a bad sparkplug wire or coil, put gauge on the fuel rail and check the preasure, if its good then a tune up may be needed,

Anonymous

  • 245 Answers
  • Posted on Feb 02, 2011

SOURCE: im lossing fuel pressure it

POSSIBLE THAT IT MIGHT BE FUEL PRESSURE REGULATOR

headstrong56

headstrong56

  • 493 Answers
  • Posted on Jul 15, 2012

SOURCE: engine runs but makes no power stumbles and dies trying to accelerate.

i'm not sure what the psi from the pump should be, but it could be that it can't keep up with the quick acceleration since you said it was slow to build pressure. I would start with the cheapest first and change the plugs and air filter see if it improves, before I spent the money on a pump. if it turns out they are the problem it never hurts to have fresh plugs and air filter at least then you know what you have in it

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