Idle A/F Ratio ?
What A/F ratio (voltage) should be seen at idle?
Mine is currently in the .89-.91 range and it seems to be running rather rich. The exhaust stinks like fuel and the car stubles a bit. I just put a new motor in and when I fired it up I had to pull some fuel out using the PFC to get it to idle anywhere near decent since the A/F was around .98. now I have it idling fairly well but it still seems a bit rich to me. '93 RX-7 Mods are: Street ported motor Power FC Bosch fuel pump 550 primary 1300 seconary injectors N-Tech DP Mid Pipe N1 Dual cat back No emissions stuff Simplified turbo control system Once the engine is broken in it's going to the dyno, but untill then i would like to get the idle situation worked out. |
Sounds like you are not in closed loop yet. Is this with the car fully warmed up? Your O2 should cycle between .300-.900 V. If it's sticking around the .900+ range it is rich and is not in closed loop. Is it a new O2? If not did the old motor put coolant through the exhaust? If so this will destroy the O2, and you should buy a new O2. Or you have got ignition issues.
|
they dont run in closed loop at idle, because the air pump throws off the reading, from the o2 sensor. you should be ignoring the af meter at idle
mike |
All times are GMT -5. The time now is 08:07 AM. |
© 2024 MH Sub I, LLC dba Internet Brands