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> MR2 MAP Sensor problem, i had problems
post Apr 11, 2007 - 5:14 PM
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Celiracer18



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so today i received my 2BAR MAP sensor from a 93 MR2. When i got it put in and started it up i got this- IPB Image

i checked the wiring diagrams and they should be the same so im not sure what to think. Any suggestions?

BTW heres a pic of the 7A bracket modified to fit the 3S sensor
IPB Image
it wasnt too hard to bend it to the right position but the MR2 bracket might just bolt right on im not too sure.

This post has been edited by Celiracer18: Apr 11, 2007 - 5:56 PM


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post Apr 12, 2007 - 12:34 PM
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x_itchy_b_x



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honestly i think you need to be able to tell the ecu what map sensor you have in there. not in the sense of a name but be able to calibrate it. set the min and max voltage that the sensor will show the ecu. so the ecu can propery adjust that voltage signal to a certain cell in the map and determine engine load and barometric pressure/elevation. i have to recalibrate the aem when ever i change the map sensor or it will read the wrong load based on the map sensor.
the 7afe doesn't use a maf so i assume its also a speed density system and the engine load would be very off if you dont tune for it. in your safc the only think i can think of is the map sensor in out feature. find the right ratio or gain that would tell the ecu its proper voltage. hard for me to explain it.

just want to clarify i have no research into the 7afe and take that with a grain of salt.

This post has been edited by x_itchy_b_x: Apr 12, 2007 - 12:40 PM


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