I'm going to replace the fuel pump in a 2000 Dodge Caravan 3.0 and was wondering if there is anything I should know before ripping into this project. Do you have an opinion on how good the parts are from places like Autozone or Napa? Thanks.
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May be the problem is not the fuel pump but the regulator valve in the fuel manifold. Has a manifold pressure and pump pressure test been done . One has to be careful with caravans as by nature they sit for long times without use and it is a tendancy to leave the fuel tank with a limited amount of fuel in it with related problems.
unhook the battery wait 5 minutes and hook it back up, this might force the computer to reset itself , if not, ( and give it a while to happen) the dodge dealer in your area can rest the system and do a OBD check
Turn the key over 3x. Don't turn it far enough to engage starter, just run postion. Listen for the fuel pump to stop running each time you do this. Now at the fourth attempt, go ahead and start it. Does it start right up now? If it does, have the fuel pressure regulator tested, maybe replaced as needed. It maybe allowing fuel to go back to the gas tank and that is not suppose to happen. If this doesn't solve it, You will need to have the fuel pump checked for consistant pressure; rather not allowing fuel to leak bad to the tank. They have a check ball in the pump that sometimes fails.
the level sending unit in the tank is attached to the fuel pump module it is a varible resistor it moves as fuel level changes this sending unit can be replaced but if your going to the trouble of replacing it you just as well replace the fuel pump it comes together.
They could have installed the wrong pump assembly. I would first check to see if the float arm is binding on something not allowing it to reach the empty position. If you take the assembly out, have the key onand work the sender up and down thru its travel and see if the gauge matches the sender position. Disconnect the wire going to the pump so it doesn't get damaged.