Particularly since the miniature controls require a degree in enigmatology - the hand-held remote is thankfully simpler - and the display vanishes like Brigadoon in direct sunlight.įortunately, the MP3 has some other noteworthy tweaks that bump the roadability value above the more pedestrian Protegé models. The sumptuous sound from this radio and its 10-inch cochlea-compressing subwoofer seems as good as most bookshelf systems, but its presence alone isn't quite enough to get the resident rev heads here salivating. Hence, the name of this car and a big chunk of its $2230 premium over a similarly equipped Protegé ES manual. It accepts regular store-bought discs or self-burned jobs encoded with MP3 digital audio computer files. The MP3's 280-watt Kenwood Excelon Z919 head unit has a multicolor LCD that, when off, is populated by marine life and when on routinely performs a perfect imitation of Tokyo's Ginza district at midnight.įlip down the motorized faceplate (after locating the appropriate tiny button with an electron microscope), and a CD slot appears. It may sound as though we've snorted the whole bag of nutmeg, but not this time. Should you heed the message and put power to the stereo, a blazing iridescent quasar vaporizes Flipper and begins pulsing in a spectral orgy to the thump of the giant subwoofer. Their little pixilated bodies duck and weave across the dashboard reminding you that your ears are going to waste. The Mazda Protegé MP3 is inhabited by dolphins. The nice thing is that the scanner helps take some of the guesswork out of the process and provides documentation.ĭoes anyone know if the TPS is a variable resistance device or a Hall-type device? I can see the variable resistance stuff wearing out.Dolphins. The TPS is supposed to be here today, an aftermarket piece from Rock Auto. This is a SWAG on my part, supported by some evidence. If the Mazda's have that feature in the ECU programming, the mixture will go rich whenever a quick movement of the throttle is made, especially if the movment is exagerrated by the TPS. The rate of change of the position signal can also be used to enrichen the mixture, similar to the accelerator pumps on carburetors. At 60 mph, the throttle is operating down in that sensitive part of the throttle range.Īlso, there is more to some TPS signals than just the absolute throttle position. The on-highway OBDII scan shows a distinct on-off-on of the cruise control, reinforced by a seat-of-the-pants thing again. I already have a diagnosis of 'out of range' MAF from a technician, not necessarily a bad MAF but of something related. The non-linear behavior of my throttle may be part of this. On the Web, there are cases of TPS wear leading to 'out of range' operation of the MAF, basically by exagerrated throttle position signals. Some of these same people complain about poor fuel economy.įrom day one after I got the car, I have noticed that off-idle acceleration is brisk, enough that I need to really feather the throttle once I am at speed, in town or on the highway. Also, I have noticed other posters here commenting about this 'problem', with no apparent resolution. Some of this is seat of the pants, others are bits and pieces on the Web. Several things led to suspicion of the TPS and it's hard to gather the pieces that led me down this path. Think of the behavior as lively acceleration. My car has a very sensitive throttle, say for the first 10-15% of the travel.
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