ok ive serched the archives and read every topic and forum but i still cant find out my problem and i was hoping that maybe some of u could help. i have a 89 si and i swaped a b16a in it and im having a map problem its throwing code 3 and running like s**t it idles at 700-760 rpms and will not reach any higher than 3500 rpms, ive swithed it out with 3 of the same maps and it still does the same thing, the weird thing is the car all this came out of never had any problems. ive checked the wiring and nothing looks wrong. if any body can help it is very much appreciated.

 

Are you sure you hooked the map sensor up to the right spot?

 

you may have the wires swithced. check that. make sure the connection to the ecu is good also,

 

If youve changed out the map sensor 3 times then its probably not the sensor. are your vacuum lines hooked up right? perhaps test for bad wires leading to the sensor. check your ecu to make sure none of the pins have pulled out of the ecu harness. see if you can substitute another computer (sometimes not so easy to get your hands on one without some $$). did you bring the wiring harness over from the other car or modify yours?

 

i brought the harness from the other car. and i was told u can use the map from a 90-93 integra and it only has one plug and one vac line is that true. and yeah i checked the ecu and all the wires are in. and i dont have a volt meter to test the wires, but how do i know which wires should be putting out power

 

i cant confirm the teg map sensor, but i have a 91 si map sensor in mine and that works. a helms manual will show you which wires to test and how to test the sensor. make sure you have the map sensor vacuum line hooked up to the right spot on the intake manifold/throttle body

 

sounds like a connection issue...if u have replaced it with a known working one and still no difference than it has to be a connection problem...ur not gonna be able to rev above 3.5k until the code clears...ur ecu is in limp mode right now...
might sound dumb but did u reset the ecu after u put the known working one in?

 

I have an ITR throttle body mounted map sensor on My B16A1 becasue I have a Skunk2 intake and 65mm throttlebody.

 

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