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  1. M

    20mpg drop, no CEL... bad map sensor?

    Wow. Major update. So I was driving the 10hr trip back to my school, and after about 2hrs the car died. First time thats ever happened to me, and was actually pretty interesting because its a manual and it kept cutting in and out until I finally came to a stop. But anyway I got it towed, and...
  2. M

    20mpg drop, no CEL... bad map sensor?

    I changed my fuel filter a couple of months ago, when I did the mpfi swap, so I don't think theres any problems there. As for my oxygen sensor, I hooked up a multimeter a couple of days ago and it generally sat at .8volts (it didn't ever go as high as 1-1.3) Once it gets "warmed up" to where...
  3. M

    20mpg drop, no CEL... bad map sensor?

    I had a problem with the o2 sensor during the summer; it kept throwing a code 1. Replaced the o2 sensor, no results. Turned out to be a loose ground wire. Tightened that up and checked to make sure the voltages the sensor was sending was the same as the voltage the computer was receiving, and...
  4. M

    20mpg drop, no CEL... bad map sensor?

    My question is, is 4.17V approximately 5 volts? I have tested the voltage at the map sensor, and the manual describes that both of the voltages should be about 5 volts. My results were 5.00 V pretty much on the dot, and 4.17 V. Is this "close enough" to 5V? As a little background info, my...
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