ok i got a 91 crx si w a d15b vtec, i did the obd1 conv harness from jkobd.com. works great, i have ALL the necesarry parts to meke it all work. between 3-4k rpm it feels like it falls on its face, also it idles real low like it want to shut off some times.. the code reads primary oxygen sensor heater, what is that and how do i fix it asap.

THANX IN ADVANCE

 

Think the p08 (stock ecu for the motor) wants a 1 wire o2 sensor, and the p28 is looking for a 4 wire. So get a one wire, get a p08, or chip the p28 to run p08 code.

 

Thanks... Bump

 

I have a Vx, and have the P28 ECU, Which requires the 4- wire, well my Vx has a 5- wire... Therefore, it reads no o2 sensor.

 

Yay for vx.

 

yeah but if i have a p28 it looks for the 4 wire, and im runnig the 4 wire.. i would understabd if it waz a po8 than yes. if some has the same mtr and setup please help me

 

Possible the heater or something is messed up, try swapping ecus with a known good one or 4 wire o2s with a known good one and you'll be able to knock down two things.

 

whats the heater??

 

The o2 sensor heater, the 4 wires have one to get it to operating temperature more quickly.

 

mifght be code
41- flux capacitor.

 

dam need some ytrash and thats it. no but really whats the oxygen sensor heater.?

 

It's just a heater on the o2 sensor itself (it's built in) that heats it up.

 

**** ,theres a good chance that i have a fucked o2 than. cuz i know for a fact that my p28 wokz fine cuz i had in my friends car not too long ago.i just bought this o2 from jpr last week. its funny cuz it will not go on till a few min. thanx anyways