map sensor? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nistech · 09-24-2005, 03:16 PM

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

sr240mike · 09-24-2005, 08:30 PM

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

FRpilot · 09-24-2005, 08:37 PM

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

240mph · 09-24-2005, 08:57 PM

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

kaje36 · 09-24-2005, 09:32 PM

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*** · 09-24-2005, 10:09 PM

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.

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.

The two models:

nistech · 09-25-2005, 05:37 AM

u guys are the best

chuy · 09-25-2005, 10:58 AM

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 · 09-25-2005, 01:06 PM

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*** · 09-25-2005, 01:09 PM

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 · 09-25-2005, 01:27 PM

Very good to know, thanks.

skatanic28 · 09-25-2005, 04:36 PM

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

*NemeGuero* · 09-25-2005, 09:35 PM

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..

09-24-2005, 03:16 PM	#1
nistech Zilvia Addict Join Date: Dec 2004 Location: CAli Age: 41 Posts: 746 Trader Rating: (0) Feedback Score: 0 reviews	map sensor? 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

09-24-2005, 08:30 PM	#2
sr240mike Zilvia FREAK! Join Date: Apr 2004 Location: California, Norcal biiaatch Posts: 1,185 Trader Rating: (0) Feedback Score: 0 reviews	There is neither a map sensor or boost sensor on Ka's. __________________ TWO IN THE COOT, ONE IN THE POOT

09-24-2005, 08:57 PM	#4
240mph Zilvia Junkie Join Date: Nov 2002 Location: guam Posts: 422 Trader Rating: (0) Feedback Score: 0 reviews	He provided a pic. Thats not a maf. And you say you got a 96' right? What is the actual code? __________________

09-24-2005, 10:09 PM	#6
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	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. 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. The two models: __________________ Comments should be taken as Opinions not as Statements of Fact

09-25-2005, 10:58 AM	#8
chuy Zilvia Addict Join Date: Mar 2003 Location: Colorado some where Age: 48 Posts: 623 Trader Rating: (2) Feedback Score: 2 reviews	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. __________________ Slide Happy

09-24-2005, 09:32 PM	#5
kaje36 Leaky Injector Join Date: Oct 2003 Location: new hampshire Age: 43 Posts: 149 Trader Rating: (2) Feedback Score: 2 reviews	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

09-25-2005, 05:37 AM	#7
nistech Zilvia Addict Join Date: Dec 2004 Location: CAli Age: 41 Posts: 746 Trader Rating: (0) Feedback Score: 0 reviews	u guys are the best

09-25-2005, 01:06 PM	#9
sr240mike Zilvia FREAK! Join Date: Apr 2004 Location: California, Norcal biiaatch Posts: 1,185 Trader Rating: (0) Feedback Score: 0 reviews	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. __________________ TWO IN THE COOT, ONE IN THE POOT

09-25-2005, 01:09 PM	#10
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	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. __________________ Comments should be taken as Opinions not as Statements of Fact

09-25-2005, 01:27 PM	#11
sr240mike Zilvia FREAK! Join Date: Apr 2004 Location: California, Norcal biiaatch Posts: 1,185 Trader Rating: (0) Feedback Score: 0 reviews	Very good to know, thanks. __________________ TWO IN THE COOT, ONE IN THE POOT

09-25-2005, 04:36 PM	#12
skatanic28 Zilvia Junkie Join Date: Oct 2002 Location: ny Age: 41 Posts: 443 Trader Rating: (0) Feedback Score: 0 reviews	too bad its only a 1 bar sensor. im currently running the aem with just that sensor, no more mafs, works great.

09-25-2005, 09:35 PM	#13
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	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..