Question about 1998 Mazda Protege

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Power/reving up issues

Got good idle but bad reving. loss of power when throttle is pulled open when i open it slow it trys to rev up and sometimes succeeds u got an idea what will cause this

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  • prince_dead Sep 11, 2008

    thats not the issue fixitman im not opening throttle all the way im just trying to get the car to actually go when i push the gas peddle. its not trany problems either cause it bottoms out power in every gear. i was told to start by replaceing fuel filter, then do a compression test on fuel line and then fuel rail ie pressure regulator valve, also try cleaning lenum what ever that is, also was told to take appart the throttle body and clean it up, another one was said to check vaccume, and somone else told me to replace spark plugs, wires, dist and i did that already i also replaced the mass airflow sensor since it was broke at the sensor plug. all i want to know is if somone else has had this kinda problem where the car idles but wont accelerate. and if they have let me know where to start and compare there problem with mine and there cure with my solutions.



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The engine has a rev limiter to keep from blowing engine up with too much rpms at idle.

Posted on Sep 10, 2008

  • M Trent Sep 11, 2008

    Have you checked vacuum yet? You may want to because you may have a stopped up exhaust system which when you check with a vacuum gauge and you open the throttle the vacuum goes to zero or very low. If your exhaust sysytem is operating properly when you open the throttle the vacuum will go down shortly but come back up pretty quickly. Also you may want to check the rubber boot that goes from the mass air flow sensor to the throttle body for air leaks because that can also cause alot of problems. Hope this may help you. Let me know if I can help any further.



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