I'm getting a high map code, I took the map sensor off to test the wires from the pcm. They checked out fine, but the wiring harness is cracked to pieces so i need to find a new one.

Also, how do i test the Map sensor. None of the parts stores know how.

 

Pigtails here http://www.eficonnection.com/eficonn..._pigtails.aspx

To test it you'll need a hand vacuum pump and a voltmeter (analog or digital).

Run 5 volts and ground to the sensor. The Signal Out wire will vary from something like .2 volts to 4.9 volts depending on vacuum. More pressure = higher voltage; remember it's just an absolute pressure sensor.
It should sweep smoothly and have no glitchy spots or anything. I'm not sure if it's a completely linear output relative to pressure... you might be about to find some information on that somewhere but it should be somewhat close.
Ideally an oscilloscope would be used so you can watch the voltage rise and fall in real time without delay.

If the voltage is stuck high no matter what, it's likely that pressure has leaked past the internal diaphragm and the sensor is shot.

 

The high MAP code may be caused by lack of intake manifold vacuum at idle. It isn't necessarily the sensor. But the typical "crumbling" harness connector will do it.

And just to clarify, is it the code for high voltage (low vacuum) or the code for high vacuum (low voltage)?

 

Malf 33 Manifold Absolute Pressure (MAP) sensor circuit (signal voltage high, low vacuum)

With my cam (cc306) should i look into a vacuum canister?

 

First find out what is causing the code. What's the MAP at idle? If it goes above 68kPa, it will set the code.

 

At idle the car tries to die when the map pressure goes up, or something else is wrong and it causes the rpm to go down and the map to go up. It gets all the way to 81kpa and when it does the idle goes down like crazy (581rpm).

 

Thanks for the link, lots of good stuff on there.