On acceleration or hill climb car cuts up like it wants to die steady cruise runs fine code stated something about vapor

If your cruise control cuts off when going up a hill and will not immediately reset, there could be a few different issues causing the problem. Here are a few things you can try to troubleshoot the issue:

1. Check the brake switch: The brake switch is responsible for deactivating the cruise control when the brakes are applied. If the brake switch is faulty or misaligned, it can cause the cruise control to cut off when going up a hill. You can check the brake switch by inspecting it for any visible damage or looseness and making sure it is properly connected to the brake pedal.
2. Check the accelerator pedal position sensor: The accelerator pedal position sensor tells the cruise control system how much acceleration is being applied. If the sensor is faulty or out of alignment, it can cause the cruise control to cut off when going up a hill. You can check the accelerator pedal position sensor by inspecting it for any visible damage or looseness and making sure it is properly connected to the accelerator pedal.
3. Check the cruise control system: If the cruise control system itself is malfunctioning, it can cause the cruise control to cut off when going up a hill. You can try resetting the cruise control system by turning the ignition off and then back on again, or you can try resetting the system according to the manufacturer's instructions.
4. Check for any other visible issues: Inspect the vehicle and its components for any visible issues that may be causing the cruise control to cut off when going up a hill. This can include debris or foreign objects that may have gotten stuck in the vehicle, or damage to the vehicle or its components.
   If you have tried these troubleshooting steps and the problem persists, it may be necessary to have the vehicle and its components inspected and diagnosed by a professional mechanic. They will be able to identify the cause of the problem and determine the necessary repairs.
   In addition to the above troubleshooting steps, it is important to check for any diagnostic codes that may have been stored in the vehicle's computer system. These codes can help to pinpoint the root cause of the problem and assist with the diagnosis and repair process.
   To accurately diagnose the problem and determine the necessary repairs, it is important to have the vehicle and its components thoroughly inspected by a professional mechanic. They will be able to identify the cause of the issue and provide a repair plan to get your cruise control system functioning properly again.

Since it works one way and not the other, check wires first. I don't work on Harley's. But I know computers. Things to think about is this a can bus data system(2 wire)? Or just the old 1 data wire per computer. This would make a difference. But your possibilities are. Wiring, the PCM, or the cruise control module. Just a note. Always check all fuses first. The PCM can have up to 4 power wires on cars. Pull the fuse and visually inspect them. This takes care of bad connections.

A transmission issue would give vibration tremendously during uphill. If you're not getting the vibration, or burning smell of transmission fluid, suspect clogged catalytic converters.

check the connection between the accelerator pedal and the pump as there are two different operations at work . The accelerator cable linkage may be loose and not giving full throttle where as the cruise control is getting full throttle.

1 cable is for ur cruise control and does not pull unless ur cruise is on. the other 1 is ur throttle cable

possible mass air flow sensor fault, dissconnect it and see if it improves slightly to confirm or have scan for trouble codes

Could be vapor lock in the fuel system. Next time it does this, stop and try removing the fuel filler cap... Hope this helps...;-)

good chance you have a clogged cat converter ...with engine running have someone rev engine and see how much flow you have out tail pipe. also if you hear the sound of something rattling inside exhaust that is another tell tale sign

do this start your car. and disconnect the positive battery cable while the car is running. let me know if the the car dies.

could be alot things if it didnt pull a code might be ur torque convertor , dirty or faultyinjectors crank position sensor