What would have caused car to make a noise and jump out of gear going down the road. when I pulled over car would not start again? What could be the problem alternator, starter,?????

maybe battery connection
check for corrosion on battery terminals

This usually occurs when the internal parts are worn and there is slack between parts to where they can not stay in mesh, If the bearing inside are worn then the shaft that the gears are on can move causing the transmission to jump out of gear. If you have an automatic it could also be due to the clutches being worn and slipping or the transmission pump, torque converter, or valve body having a problem with leakage or fluid control.

There is a black fuel relay way up under the top left driver side dash that breaks its main wire solder connections on the circuit board under over-heat conditions. Resolder that relay. Starting fluid will show that you have lost fuel delivery under no start conditions. You can use the breather hose from the valve cover for this test.

run fault codes and look for faults in idle sensor---MAF sensor

sound like main shaft bearing assuming it is manual( if it comes on all the gears)

if it is automatic it must be your torque converter bearing

sounds like speedometer cable is gone or the gears between the cable and transmission which makes the reduction for sppedometer if no cable on that year they have a sensor

Hello.

The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems ca cause many drive-ability related problem such as rough idle and other symptoms

Have you replaced the main power relay? It's what causes the 90's Accords to just suddenly shut off and not want to start back for a few. Also, how old is your distributor? It's another problem part on those Accords, that has all these sensors inside that go bad.

it might be the start up gear or the transmission or engine might need to check the oil. i think that the transmission needs replacing.

speedometer drive gear stripped or cable binding