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Old 08-21-2005, 09:29 PM
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Waltz Waltz is offline
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Re: power fluctuates throughout the powerband

humm , dont even have to drive it , if you know how to use a multimeter that is ... TPS and MAFS are both 3 wire sensors * one for BAT+ - one for sensor signal - one for ground *

check the tps resistance or voltage (cant remember wich depends on make and model) while pulling the throttle , should either start with low resistance/voltage then work its way up as you pull the throttle or the other way around *depends on how ecu works* for voltage it should not be less then 0.5 volts and no more then 4.5 volts and should NOT fluctuate up and down while pulling throttle

as for the mafs , same thing as tps check for signal voltage , should stay put at idle and work it way up when rapidly pressing the accelerator pedal (thus creating vacuum) again no less then 0.5v and no more then 4.5v
basic sensor troubleshooting from my mecanics course
Best of luck
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