96 DX hatch, overheating, missing o2 sensor.
10-19-2007, 09:45 AM
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96 DX hatch, overheating, missing o2 sensor.
I picked up a 96 dx hatch about a month ago. I've been having problems with it overheating at idle. It is basically stock except for a pacesetter header, and apexi exhaust which came with it. I checked the fan, the fan on the radiator looks to be brand new. There are no coolant leaks. Trying to figure out why it's overheating.
Also, I just noticed that the O2 sensor on the header isn't actually hooked up; no where on the exhaust can I find a hooked up O2 sensor. I'm not throwing a CEL which that alone surprises me. I don't understand how the car can be running fine with no O2 sensor hooked up. Should I go get a new one and hook it up right away, and why wouldn't the car throw a CEL for a cut/missing O2 sensor?
I was also thinking that might be the cause of the overheating if the car is running really out of tune, I don't know much about D series honda motors, but I'm assuming the O2 sensor is the main part of tuning the fuel map, which without it I would think it would throw a CEL and possible run really lean or rich. I'm going to start by checking the fuses on the fan.
Also, I just noticed that the O2 sensor on the header isn't actually hooked up; no where on the exhaust can I find a hooked up O2 sensor. I'm not throwing a CEL which that alone surprises me. I don't understand how the car can be running fine with no O2 sensor hooked up. Should I go get a new one and hook it up right away, and why wouldn't the car throw a CEL for a cut/missing O2 sensor?
I was also thinking that might be the cause of the overheating if the car is running really out of tune, I don't know much about D series honda motors, but I'm assuming the O2 sensor is the main part of tuning the fuel map, which without it I would think it would throw a CEL and possible run really lean or rich. I'm going to start by checking the fuses on the fan.
10-19-2007, 09:21 PM
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Re: 96 DX hatch, overheating, missing o2 sensor. (awalp)
anybody have any insight on the no o2 sensor but no CEL and car running seeming fine?
10-19-2007, 09:37 PM
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check to see if ur fan turn on when it gets hot., could b thermostat buddie, check to see if ur radiator fan switch is plug, an add some antifreeze while your at it
10-21-2007, 09:47 PM
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you are the chosen one its possible who ever owned your car wired it toa fuse with the correct voltage or whatever needed to not throw a code .. but dont hold me to that.
10-23-2007, 01:42 PM
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Re: (95ej2)
I'll check that but the dash seems untouched and I see no extra/different wiring, and the car runs great, an auto, chrips second, and gets 32mpg.
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10-24-2007, 07:41 PM
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that is my one and only O2 sensor not hooked up, but the car gets 32mpg ??? explanation!!!
also, how can I check to make sure my check engine light is working properly?
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