Question about 2003 Ford Ranger Regular Cab

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Ranger 2003 ranger 3.0 stalls when accelerating

I have replaced everything on this thing from fuel filter to air filter, mass air flow sensor, coil pack, wires and plugs, cam position sensor. I am baffled and dont know where to look for the problem now. I have had the fuel pump out to replace it too bu when I went to put the new one in it was the wrong one. they sold me one that wasnt for flex fuel. Parts are hard to come by for this thing where i live. The truck runs great except for when you accelerate hard taking off or passing someone. Then it cuts out, rpms drop and it comes back over and over until you let off. It doesnt do it all of the time. It can do it really bad one day and not at all the next. I drove it about 140 miles yesterday with no problems. Go again today and it does it terrible. Any help with this would be greatly appreciated....

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  • badluck911 Aug 16, 2008

    The check engine light has never come on and yes I have tried having the codes read by my mechanic. He says there is no codes displaying. I dont know if this is true but he says that the check engine light has to come on for it to throw codes.. Of coarse the stupid thing wouldnt act up when i left it with my mechanic so he just thought I was crazy. That is why i started replacing some of the more inexpensive parts thinking i might get lucky and fix it myself.....

  • Theroad Dec 09, 2008

    In neutral and rev to about 3 to 4 K rpm it drops power pack and forth.


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I guess I have to ask is the CHECK ENGINE LIGHT ON? I have seen a crack in the air intake hose that only opens up on hard acceleration because of the engine torque Im sure you looked at that, just mentioning it.
Has a TPS been check don't just replace parts test then replace sure its slower but sure is less expensive and you learn something too.
If the engine light is on, get the code then contaact me and Ill tell you how to TROUBLESHOOT AND DIAGNOSE NOT JSUT CHANGE PARTS

Posted on Aug 16, 2008

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