1997 Mazda Protege question

1997 MAZDA PROTEGE
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GREENEDRIVER
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Engine Performance problem
1997 Mazda Protege 4 cyl Front Wheel Drive Manual 120k miles

i have a 97 mazda protege that i just recently just bought the previous owner put a new water pump ,timing belt valve cover gaskets and flushed all fluids. My question is when im in 1st gear the car has no power and doesnt accelerate well unless i rev my rpm's to 5000 then the car does fine. Im not to sure if i should give the car a tune up or put a new fuel pump or should i just do a induction service or something , im not to sure what to do.
Nov 1, 2009 at 8:53 PM
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RASMATAZ
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Sounds like the clutch is slipping
Nov 2, 2009 at 4:11 AM
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GREENEDRIVER
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there's a new clutch in it already it only maybe has 500 miles on it
Nov 2, 2009 at 9:42 PM
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RASMATAZ
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Check and test t he following:

Oxygen sensor
Catalytic converter
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
Nov 3, 2009 at 11:25 AM
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GREENEDRIVER
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well actually i put a scan tool on it and it said that i need a down stream o2 censor but will that make the car hesitate and stall ?
Nov 3, 2009 at 4:10 PM
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RASMATAZ
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It will cause it to hesitate if its not switching accordingly but wii not make it stall.
Nov 4, 2009 at 9:23 AM