Gas sending unit needs change in tank - 1997 Cadillac Eldorado

You need to drop your gas tank, first un clamp filler hose fro underneath, and vent hose. Undo the two gas tank straps and wiggle tank down around the exhaust system. Once on the ground you will see a small ring around the hoses going into the sending unit, being very careful to not get dirt in the tank. Sending unit should pop out . The fuel pump is bolted onto the sending unit. You un plug the 2 wires going to it and the bolts holding it on, and replace the opposite way good luck

No but you need to drop the tank and remove the retaining ring that holds the fuel pump and sending unit in.Replace the pump as well the cost is'nt much difference.

Fuel sending unit neeeds changed, This is what sends info to your gague, Good luck to you.

This problem is caused by a defective gas gauge sending unit inside the gas tank, to change the sending unit requires that the gas tank be removed from the car to access the gas gauge sending unit.

this problem is caused by a defective gas gage sending unit, the sending unit is located inside the gas tank and to replace it u must remove the fuel tank from the car.

mcdevito75 here, Hello john, the sending unit in the gas tank could be faulty of stuck, try leaning against one of the back fenders to move the body of the car from side to side to try to free up the sending unit. You may have to live with it unless yoyur local shop changes the sending unit in the gas tank.

Inside the gas tank is the fuel sending unit. It is a floating device that is held on rails and it slides up and down depending on gas level and then sends a signal to the gas gauge. Either the float is leaky or it is stuck. The down side is you have to pull out the tank, then use brass punch and knock the ring counter-clockwise until it becomes loose. Then pull out and change the sending unit. Do make sure negative battery cable is disconnected and wiring harness and fuel lines are disconnected before pulling the tank.

If the gauge works on the rear tank but not the front, the problem is most likely the sending unit in the front tank. You will have to drop the tank to change it. I guess what I would do is, set your trip meter to zero when you fill the front tank. Then, run that tank to the point where the truck is starting to run out of gas and then switch to rear tank. Keep track of how far you can go on the front tank. Then when you refill the front tank reset the trip meter and switch tanks about 20 miles before you think it's going to run out. It's not a good idea to run those pumps dry. Just make sure you have gas in the rear tank. If you do decide to change the sending unit, run that front tank as empty as you can, also, I would change the pump too. In 92, I think the pump or the sending unit can be replaced seperately. The worst thing about changing those in tank fuel pumps is getting the gas out of the tank. No trip meter? Just write down the mileage from the odometer. Good luck.

this is not the gas gauge, this problem is caused by the gas gauge sending unit inside the gas tank, drop the gas tank and rep[lace the fuel pump/sending unit module, about $200 for the part from rockauto.com.

Well that tells me that someone installed the wrong fuel level sensor. Your going to have to drop the tank and pull the pump and float assymbly out. Then go to a parts store and get a sending unit that has the opposite resistance of that sending unit. Just wait until the tank is empty so its a lot lighter. You can call the parts store or go down and see if there is multiple sending units. The sending units work by resistance, when the tank is full the float moves up and turns a wheel in the sending unit, which either removes or increases the resistance causing the gauge to lower. The sending units either give full resistance at full or no resistance at full and then changes as the level goes down until it does the opposite at empty.