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Just replaced the lower spark plug seals on my 94 Accord. Did a valve adjustment at the same time. She was a bit tough to start, but when she did sounded nice. Ran the car around the block then parked it.Sounded even better after my run about. Next day fired it up. Was on the fourth attempt before it turned over. Was able to get it back in my garage while it was running. Had a check engine light on. The OBD code was a 48. Oxygen sensor. Is this a common occurrence after this repair? Any way to clean this sensor? Or just replace? Thanks.
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Have you tested the wiring (& heater circuit if it has one) in order to confirm that the O2 is actually bad? If the sensor is actually bad I don’t think it’s failure is related to your repair. I also don’t think I would mess with trying to clean it or rehab it.
I can’t say its a common occurrence. Check the fuse for the o2 sensor.
If fuse is good check for 12v on the two same colored wires at the o2.
if 12v is seen replace the o2.The o2 sensor was definitely part of the problem. Car starts runs nice, then after about ten minutes of run time. Dies abruptly and will not restart till a couple hours of cool down time. Ideas?
I did replace the O2 sensor. Runs for ten minutes then dies. Wont restart till it cools.
I believe i read the OBD code incorrectly. 4 & 8 not 48.
Distributor?
Mechanical timing?
Car sounds and runs great till it, well doesn’t. About ten minutes. Just dies. No noise no jerking.
Maybe just me, but the exhaust may have sounded a bit louder than normal.
ThanksChecked the distributor and points. There was some carbon build up on the rotor and two of the points. Cleaned them up and let the car run for almost 30 minutes. No check engine light. All seemed well. Dropped the hood to take her for a drive. I was cleaning up my tools before I left. Heard the fan kick on. Just before climbing in noticed my engine light was back on. OBD code was 4 & 8 again. Can one or both of the sensors be failing due to heat?
Thank you guys for your advice.
I found my problem. It was a little deeper than the rotor and points.
I pulled the entire distributor apart. Clear down to the sensors.
What I found were wires that had deteriorated and had begun to pull apart. Exposing the bare wires. There were many. I’m guessing when the engine heated up the wire jackets expanded and allowed an electrical current to pass into the distributor housing.
I red necked the repairs by painstakingly wrapping all of the broken electrical wiring with electrical tape. I did this just to see if this was the problem.
She fired right up. Ran for an hour in idle in my drive. Then took her out for a drive.
Runs great.
I’ll be replacing the distributor with a new OEM part.
Thanks again for helping me out! Cheers!
Not knowing how exactly to get this information out there, but I think this symptom and repair may be valuable to other people out there.
Would one of you please make sure this diagnosis and repair is seen by others.
Thanks.
I was off at 1st by the OBD code, but your help and persistence won the day .
Thanks
[quote=”Leftyisadogman” post=154899]Not knowing how exactly to get this information out there, but I think this symptom and repair may be valuable to other people out there.
Would one of you please make sure this diagnosis and repair is seen by others.
Thanks.
I was off at 1st by the OBD code, but your help and persistence won the day .
Thanks[/quote]
Glad you found the problem. Your post will stay in our data base for others to use. 🙂
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