2000 Ford Ranger runs great when parked, lol

2000 FORD RANGER
128,000 MILES • 6 CYL • 4WD • AUTOMATIC
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GREGMANNING1033
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  • 1 POST
i have had this truck for 4 years and never really thought much of the "problem" untill now that gas is $4.00 a gallon! the motor seems to run great all of the time, but when i need to accelerate.... weather it be from a lite or to merge on the freeway, it has no power or i would almost say a trans slip but there is no noise or grinding. the rpms seem to be right where the need to be, im just not accelerating as fast as it should be. and i seem to be geeting about 16 mph highway with it right now. i have already changed the: feul filter, plugs, wires, air filter, oil, and cleaned the MAF, and throttle body. any suggestions?
Jul 28, 2008 at 7:57 PM
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BLACKOP555
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 10,386 POSTS
get the engien scanned for codes, maf sensor could be bad still not throw a code, and cleaning not fix it remember that.

try disconnecting the o2 sensor and driving it, it run any better?
Jul 28, 2008 at 9:49 PM