recently my car's check engine light turns On again. it happened few months ago and i got a mechanic who specialises honda car
in ubi area to fix it for $280 in 5 mins. i guess i want to try and get it fix somewhere else to see if i could get it done one and for all without having to be a carrot.
well, i'm driving an EK. when the engine light turns ON, sometimes it lost power on gear one. sometimes it works as fine. and
sometimes, it goes back to normal after i restart engine.
this problem has been a few days. today, it just doesn't turn Off after i tried to restart.
all the good honda mec i know are located in the WEST, i wish not to travel that far to fix this.
Let me make a guess. EG/EK those era cars I think they like to tinker with the exhaust.
Modified original, remove cat converter,
There are two o2 sensors. One upstream near the exhaust and the other downstream, after the cat converter.
Since the cat converter can be missing, the two o2 sensor reads the same, and this triggers CEL.
The upstream o2 sensor is more important as It controls fueling and power.
The trick to disable CEL due to missing cat converter is to change the signal.
Some mech put spacer on the lower o2 sensor, some add capacitors/resistors to the signal.
Sometimes it work, sometimes it doesn't. So your CEL will come on and go off.
If your engine has other problem due to misfiring, it will also affect power output.
And also light up CEL.
The first thing to do is to check the code of the CEL, then you can work from there.