Have 92 acura legend no fier please tell me what going on

This issue can be different things. This can be an electrical problem, Fuel pump may not be getting electricity continuously, Fuel filter may be clogged, or Fuel Pump is defective.

what a hard question... so many things to check
.internal reg, or PCM reg.
Amp output and physical fit. pulley size, type, and clocking. connector type, and pinout., to say the least.

i picked an autostore, at random , and it dont match.
not only that, you risk blowing your engine PCM using the wrong alt.
you never said which car was the donor, so can really answer fully.
my guess the legend.

the legend has an internal reg.
the accord is PCM controlled, a hopeless match
i looked this up, on alldata.com , schematics.

Go to Autozone,show them what it's doing and they will help you troubleshoot and repair.

Possibly valve body in steering mechanism, try changing oil in steering .
Giltronics

sounds like a bad head gasket or a cracked head

Neutral safety switch may cause those symptoms

plugged heater core, must bring it in for proper flush.

You have to do this: If you have jumped or replaced the battery at anytime this will happen. You have to get the serial number off the radio by removing it or partially taking it out to see the numbers on it try not to remove any cords. With the stereo out (to make sure you get the right number off of it) call an Acura dealership with the number and they will give you the another number to enter into the stereo and directions on how to punch the numbers in. Make sure while you have the stereo out you write the serial number down and keep it in a safe place also the number that the Acura dealership gives you because if you sell the car or if it happens again its easily accessible. Good Luck!

dose'nt matter long as you make sure they are exactly the same but if you are going to go through the pain of changing it you should put a new one in unless you would like to do it again.

change vss.vechile speed sensor