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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.
Internal transmission failure, What you describe is loss of prime.This can range from low fluid level to low pressure from the front pump.You can check you transmission fluid,have vehicle running placed in park check the transmission dip stick,The fluid must be in the range.You can also shot gun a repair by replacing the output speed sensor.
The speedometer sensor - VSS - vehicle speed sensor is a input to the PCM - powertrain control module -engine computer . The signal from the PCM to the instrument cluster for speed info. is sent on a serial data communication network (class 2 ) I would think it would be an instrument cluster problem . Get a used one from a auto salvage yard 15 - 20 bucks an see if it fixes it . If it does ,send your's out an have it repaired .
Sounds like the speed sensor in the transmission is faulty. Does the engine light come on? If it is , it would indicate the speed sensor code. Check the connection for looseness. Good Luck.
Common on those is the dash cluster connection itself, there is a plug on the back of it, that you pull off & i ended up using tweezers or needle nose pliers and just very slightly twisted or bent ends of the male spade (small) contacts on the cluster itself, one by one. re-attached everything & problem cured. If you just pull trim around the cluster, it will come off, then 3 or 4 screws and cluster will lift out of there, unplug harness, do as described & re-install. Let me know how you make out. Did it 2 or 3 times in my 95 neon & it cured it for a few years each time.
You probably have bad shocks. Check them by pushing up and down on the bumper and let go. Good shocks will make the bounce stop after a few times. Where as, bad shocks will keep the bouncing going for a while.
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