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Horsepower theft

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Old Oct 28, 2007 | 12:04 PM
  #1  
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ozone11
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Horsepower theft

what other stock parts rob a vehicle of power? I have already replaced the oil/filter, air filter, spark plugs, and PCV valve. Thanks for the help.

1993 Ford Ranger 4x4 4.0

ozone11@cinci.rr.com
 
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Old Oct 28, 2007 | 05:08 PM
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Fuel filter, spark plugs & wires, worn distributor cap & rotor, dirty MAF sensor & throttle body, dirty fuel injectors or EGR valve, lazy O2 senors, plugged cat converter, or bent closed/restricted exhaust system, big tires, low tire air pressure, wrong viscosity lubricants, poor quality fuel, or wrong octane fuel, lugging around unnecessary weight are a few things that come to mind.

I see you have already replaced some good suspects.

Maybe just bring this puppy up to date on due, past & present scheduled maintenance items.
Your owners manual, or scheduled maintenance book would likely list them all.
 
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Old Oct 28, 2007 | 08:09 PM
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thanks for the info
 
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Old Oct 29, 2007 | 12:10 AM
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Yeah, doesn't narrow it down much. For the record, the plugged cat is usually caused by other problems that rob power, such as leaking injectors, faulty O2 sensors, or fouled plugs. So don't jump to the conclusion of a clogged cat unless the other factors have been investigated.
 
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Old Oct 29, 2007 | 01:43 AM
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I have found in my performance applications that plug wires, cap, rotor and plugs cause more problems than most people realize.
 
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