99 explorer 4.0 SOHC running funny, intermittenet stumble | Ford Explorer Forums

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99 explorer 4.0 SOHC running funny, intermittenet stumble

shanes76

Well-Known Member
Joined
May 24, 2011
Messages
106
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City, State
Zanesville, Ohio
Year, Model & Trim Level
99 Explorer Sport 4X4
changed the fuel filter, new plugs(APP103) new wires(autolite professional) did a fuel pressure check(64lbs at idle and while reving up) It seems to miss or cut out while driving, usually around 30 to 45 mph, no codes showing up. plugs are gapped at 54-55, could the TPS be going bad and not setting a code? almost like there is air getting in the fuel line, doin the Fuel pressure test, when I first turn the key on, it went to 40lbs, then turned off and back on and it went to 65lbs, after i turned it off it held at 64lbs, suppose the pump could have a weak spot or something
 






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