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Originally Posted by Twyztidmind
I got a MAP code on my ecu, my car will not rev above 3K rpm's.
I got out my repair manual, did a voltage test over 2 of the wires and it didnt have any power accros them. The manual does not say how to fix the problem, it just says to take it to the shop, but i am pretty handy when it comes to the wireing. Does anyone know if i can fix this, wouldnt it just be a shorted wire some were, what if i ran new wires from ecu to the map plug?
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I have heard that the ground becomes bad.
So you are not getting 5v on one of the wires? you should have a ground, a 5v power and a signal wire.
I would attach your voltmeter's (-) to the battery (-) and probe the connector with the three wires and see if you get anything. (Don't disconnect anything) backprobe the connector with the (+). You can use a pin or a paperclip to get in there.
You should have a 5v on one, 3.6v on another (with the key on engine off) and a very small amount of voltage on the last 0.1v.
Try these checks and get back.
Smoghog