Ok so I bought a 1990 Integra. The idle is jumpy and my ecu is reading code 13 (barometric pressure) Wtf do I do to fix it

 

I think you may need a new ECU but try a good working MAP sensor first and reset the ECU.

 

Ok I'm buying a new (used) ecu. Tomorrow. Any tips on putting it in?
Also any way to tell what model my Integra is?

 

Pretty basic, disconnect the negative battery terminal, unbolt the 10mm ecu hold down bolts, unplug the old ecu, plug in the new ecu, bolt it back down, and reconnect the negative. Done.

 

There is a barometric sensor kinda near the ecu. My friend has this issue and has had it for about a year or 2 lol. He doesn't really care i guess. We swapped out the sensor and ecu but his never went away. His wiring is all messed up though so don't worry about that. If the ecu doesn't work, try swapping the sensor.

 

In the obd1 ecus the barometric pressure sensor is within the ecu. I don't recall the obd0 cars having an external barometric pressure sensor... it should also be within the ecu...

nicknick25, where was this located and what did it look like? I think you may be confusing this sensor with another...