Replace it with a new or used one.
It depends on what is wrong with the cable. When you pull the hood release within the car, is the latch not popping? If you can get the hood up at all, then you should look at the actual latch system where the cable runs, there is a metal clip that holds the cable to the latch. Have another person pull the interior latch release and watch the cable.
If the cable is broken on the inside of the car it isn't too difficult. Simply pull the cable out of the hood release bracket. Then peel back the outer housing to the small inner cable and pull that to release the hood latch. I have done that and it works. On the other hand if the cable broke on the latch release lever under the hood that gets somewhat more difficult. I have never had that problem but if I did this is what I would try first. Take out the six screws that hold the grill in from the outside. Then reach up through the opening to the left side of the latch. Make a hook on the end of a rod and insert that between the latch bracket and the top of the radiator support and attempt to catch the latch release lever and pull back to release the latch. It might take several tries but it might work. Then there is another alternative. Take it to a body shop and see if they have some easier trick to open the latch. That might be a lot easier.
The cable between the latch and the handle may be broken or needs adjustement to shorten the cable so that the latch will fully release.
right behind the seatbelt mounts on both sides,there is a small cable with a loop on the end.stick you finger in the loop and pull,this will release the latch pin.
cable broke release latch for the hood can't open it
There is a secondary safety latch. The coil on the cable rests against the center pin of the secondary latch. If you push this pin up, into the main hanging bracket to release the hanger. Carfull, the whole things comes down at that point.
To fix a Toyota MR2 2000 hood latch release cable, first, check for any visible damage or fraying along the cable. If it's stuck or not functioning, you may need to access the latch mechanism, which typically involves removing the interior panel near the driver's side. Once exposed, you can either lubricate the latch or replace the cable if it's broken. Reinstall everything securely and test the release mechanism to ensure it's working properly.
If the hood release cable on your 1989 Chevy Celebrity is broken at the inside pull handle you can simply pull the cable out a bit, then cut off the outer housing leaving the center cable. You can pull on that bit of cable and unlatch the hood. If the cable is broken at the actual hood latch you could try: The grill is held on with six screws, remove them and take the grill out. Then use a hook and reach in between the top of the radiator support bracket and the bottom of the latch mechanism and catch the lever with the hook. Pull the lever and release the latch. This may take multiple tries to get it right. Of course you want to change the cable as soon as possible, these methods become real nuisances quickly.
From under car... its not too bad on a lift you can find cable near the hood need to get the inner wire and pull with pliers
Directly in front of the radiator. You can't miss it; it's mounted on the metal bracket that holds down the latch for the hood.
The latch is broken, not the cable. You can still get to the cable where it is attached to the latch in the foot-well of the car. Grab the cable with a small vice-grip (or similar) and pull. Note that it is very unlikely the cable will break -the latch typically breaks before the cable since the latch is made from plastic and the cable from steel wire.
reach in from underneath grille area and pull on latch mechanism, use a stiff piece of wire with end bent into a hook(coat hanger) if you look you will see where cable attaches to latch pull on this area