Question about 2002 Jeep Liberty
Need MAP/IAT wiring diagram to show what wire go to MAP and IAT
Posted by Anonymous on
Go to autozone and ask for the wiring diagram. They will print one for you for free. If you dont have an autozone near you try another parts store. If you purchase a haines of chiltons manual ($25 in a retail store or $18 on amazon), it will have a detailed wiring diagram of the MAP sensor.
Posted on Jan 04, 2015
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Posted on Jan 02, 2017
The MAP sensor (MANIFOLD ABSOLUTE PRESSURE) changes voltage or frequency as intake manifold pressure changes (air flow increases or decreases). The engine's computer uses the reading to advance or ****** engine timing. On older, non-fuel injected engines the vacuum advance on the distributor did basically the same thing.
The MAP sensor also works with other sensors on the Jeep engine, specifically the Throttle Position Sensor (on the throttle body) and Crank Position Sensor (on the transmission bell housing) to control other fuel flow and ignition timing functions.
If you're having problems with the MAP sensor, or are getting a Check Engine light and code for the MAP sensor keep in mind that other problems may cause that error code.
Bad vacuum hoses, vacuum leaks, bad EGR valves, intake manifold leaks, clogged air filter can all affect the MAP. sensor. To know for sure all the other sensors should be checked for correct voltage and perimeters
Also, if you have done any mods to the engine, especially intake, exhaust and ignition mods you may get an error code for the MAP or incorrect reading and a resulting loss in power or increased fuel usage.
The map sensor is easy to change with a couple screws off the Throttle body.. The part the air inters (the air breather). Buy one from the auto parts store if your sure that is the problem and just replace it..There is no adjustments to it...
It really sounds to me that you have a small vacuum leak in a line somewhere.You can try spraying the motor vacuum lines with soapy water with the vehicle running to find a leak. Also listen and feel under the dash for leaks and hissing sounds.
Hope this helps.......
Posted on Oct 31, 2008
SOURCE: i need to replace the
The Manifold Absolute Pressure sensor is located on top of the cylinder head, right side, about 2/3 of the way back. there is one screw holding it in. You will need to take off the plastic engine cover off to access it. The sensor in the airbox is the MAF sensor.
Posted on Feb 15, 2009
DK/GR&RED. Center wire.Other wires are 5 volt ref and system ground.
Posted on Jun 22, 2010
Testimonial: "Thanks for your help, although on my 97 there are two whites and a red, but there are still only three so i'll try the center wire, nice to have a starting point !"
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