BKKloppenborg

Hey guys, well finally figured out it wasn't my map sensor that was the issue with car. I replaced it 3 times still no luck.The check engine light says the Map sensor voltage is to low. I tested the Engine harness wires going into the map sensor. The 3 wires going to map sensor, only one is getting 5 volts, other two are getting 0.3. I was wondering if anyone has had this issue and the best way to fix it. Its drivng me fing crazy!

cruzalekz

map voltage for your car's connector should be a 5v bias voltage, a ground (.05mv), and a constant 2.5 volts because its a (frequency type map) unlike the regular analog type which moves from .5v to 4.8v depending on engine load.

so with the voltage you mentioned, i see something wrong there. if you replaced the map 3x already, chances are you have a wiring problem.

i personally think the signal wire (should be 2.5v) is shorted to ground whether its on the chassis or the ground wire. follow the signal wire and look if its stripped touching ground somewhere.
please dont change anymore map sensor.
goodluck