Odometer has stopped working, like in the last day, check engine light is on, but car seems to run fine. Has way over 200.000 miles on it. Gas gage works rpm gage and heat gage works.Just noticed this during the day,so not sure if dash lights are affected. thanks
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I am no Honda expert, but a similar problem happened to my ex sister in-laws Ford Taurus. The speed odometer would jump around and it had trouble shifting (automatic transmission). After driving it I changed out the speed odometer sensor on the transmission and it's been fine ever since. I changed out the sensor because if the cars computer cannot tell how fast the car is traveling then fail safes in place go into effect and the computer will do it's best to keep the cars rpm's down based on the speed indicator and not let it shift or shift properly either. If it's getting false speeds then it will shut down the motor when the speed gets to high and allow it to run as the speeds fall (jumping speed odometer needle). It effects the transmission shift points also. It will either shift erratically or not shift out of say 2nd gear, so that the cars engine can't get damaged based on what signal the speed sensor is sending the computer.
My first guess is that your oxygen sensor has gone bad. However, I'd think you'd have an engine warning light come on. In my experience, a bad oxygen sensor can really mess up your fuel mileage, even though the car seems to run fine. I'll bet your friendly car shop can fix you up.
YES!!, you had it tuned, it runs good, but gas mileage dropped, and check engine light is on,it sounds like the o2 sensors are slow or even dead, i would replace them for sure and that just might solve all your problems,good luck, hope this helps.
DISCONCT THE EHXAUST BEFORE THE CAT AND ROAD TEST.
A GLOWING CAT HAS MOST LIKELY FAILED.
BUT LOOK FOR OTHER PROBLEMS THE MAY HAVE CAUSED THE CAT TO FAIL.
Pull instrument/ cluster panel and re-melt cold solder joints where circuit board connects to dash connectors. Get them hot enough to turn them bright silver, usually 3-5 seconds each pin.
Good Luck!
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