1995 dodge caravan-need to drain fuel mtank and then drop it to replace bad fuel pump. How?

The sender unit in the tank has probably failed and needs replacing.

The pump is in the gas tank. On some early 90s models you could access the pump thru an access plate without dropping the tank.
Otherwise you have to drop the tank and take the pump out thru the top. If you do replace it, make sure you replace the filter too.

Removal

Remove fuel filler cap and perform Fuel System Pressure Release procedure.

1. Disconnect negative cable from battery.
2. Insert fuel siphon hose into fuel filler neck and push it into the tank.
3. Drain fuel tank dry into holding tank or a properly labeled GASOLINE safety container.
4. Raise vehicle on hoist.
5. Use a transmission jack to support the fuel tank. Remove bolts from fuel tank straps. Lower tank slightly.
6. Clean area around fuel tank module and tank to keep dirt and foreign material out of tank.
7. Disconnect fuel lines from fuel pump module by depressing quick connect retainers with thumb and fore finger
8. Slide fuel pump module electrical connector lock to unlock.
9. Push down on connector retainer and pull connector off module.
10. remove plastic locknut counterclockwise to release pump module
11. Carefully remove pump module and O-ring from tank
12. Discard old O-ring.

INSTALLATION

1. Wipe seal area of tank clean and place a new O-ring seal in position on pump.
2. Position fuel pump in tank with locknut.
3. Tighten locknut to 53 N·m (43 ft. lbs.)
4. Connect fuel lines.
5. Plug in electrical connector. Slide connector lock into position.
6. Raise fuel tank, install bolts into fuel tank straps and tighten.
7. Lower vehicle on hoist.
8. Connect negative cable from battery.
9. Fill fuel tank. Check for leaks.
10. Install fuel filler cap.

It is believed that the fuel pump is in the fuel tank, and you have to take the tank off the vehicle to replace it.

You need to drop the tank...sorry! Make sure you have it supported when you drop it.......it will probably be way heavier than you think.

Have you checked the fuel pressure? If it is high and fuel is not returning, the regulator is bad. If it is low and fuel is not returning, the pump is bad.

have you tried a noid light on the injectors to see if they are geting power

I doubt the regulator is bad, the fuel pressure regulator is after the injectors in the return stream to the tank, more likely it is the fuel pump.

If the a/c is charged good and the controls is working right I would say the air conditioner pump is bad. I would recheck every thing if it looks good and you will need to change the pump and recharge th a/c .

probably have to drop fuel tank and remove old fuel pump fuel pump is in fuel tank

The fuel pump resides inside the gas tank. You need to drop the tank and upen up the top to remove the pump. The car will need to be elevated in order to have enough room to remove the tank. Be careful as any spark created will be bad!

Dan