map sensor?

[nistech]

96 240sx ka check engine light is on and the code is map sensor. i went to the connell nissan to pick up the part and he tells me that nissans dont have map sensors they are called boost sensors. so some how i found which sensor it is and there is vacuum going to it should i just get the sensor and hope it works i dunno what to do i need help/ here is a pic of thing


http://img160.imageshack.us/img160/9563/photo0924050012kx.jpg

[sr240mike]

There is neither a map sensor or boost sensor on Ka's.

[FRpilot]

maybe you mean its the 'maf' sensor near the airbox.

[240mph]

He provided a pic. Thats not a maf.
And you say you got a 96' right?
What is the actual code?

[kaje36]

my 98 had a air pressure sensor (map) its just for emitions stuff.. I dont exactly what it does.. pulled it out.. and didnt even throw a code

[S14DB]

S14's have 2 pressure sensors. One is the MAP and Barometric sensor(the one you are holding). The other is the Evap Pressure sensor.
http://img.photobucket.com/albums/v108/S14DB/240sx/MAP/MAPfront.jpg
http://img.photobucket.com/albums/v108/S14DB/240sx/MAP/MAPtop.jpg

You have to watch out cause when mine went the parts store and the dealership gave me the Evap sensor rather than the Map. They have a different voltage sweeps and the ECU doesn't like it. It took the dealer a day and a half of tracing to figure it out.

The major difference is in the vacuum nipple. The MAP one comes straight out where as the EVAP has a 90* bend in it. If they give you the one below, don't take it.
http://img.photobucket.com/albums/v108/S14DB/240sx/MAP/EVAP.jpg
The two models:
http://img.photobucket.com/albums/v108/S14DB/240sx/MAP/MAPvsEVAP.jpg

[nistech]

u guys are the best

[chuy]

Im at a govt computer so I cant see pics but if you could e-maik them too me
[email protected]

Also Ive bought one from Auto Zone that is the wrong part too so I was out like $90 for a sensor that is not needed.

[sr240mike]

OMG, 4 bar map sensor, now I can finally eliminate my MAF. J/k, anybody know what they use the map sensor for, seeing how there's no turbo, and there already is a MAF.

[S14DB]

S14's do fuel trim by MAF and IAT/MAP. When mine went I had a dyno day and I went 18:1 and then shut it down. Replaced it then came back to normal.

[sr240mike]

Very good to know, thanks.

[skatanic28]

too bad its only a 1 bar sensor.
im currently running the aem with just that sensor, no more mafs, works great.

[NemeGuero]

So as far as function goes.. is the MAP sensor necessary? For anything other than emissions.. I didn't clearly understand the IAT/MAP comment..