Why does the fuel pump on a 93 dodge grand caravan keep failing?

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Dj T

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My dad has a 1993 dodge grand caravan 3.3 liter we have replace the filter and the pump twice now. Once with an Airtex pump and once with a carter pump but both failed very quickly. The Airtex failed within in 3 weeks, the carter failed in about 3 months. I was just wondering if anything else could be causing this we cleaned the tank out very well and checked the lines. I would appreciate the help.
 
you know some times its just bad luck
i had changed the fuel pump in my truck once with a new one "that was bad " and ended up changing all kinda of stuff thinking the pump was good in the end i was just unlucky and ended up with a bad "new fuel pump"
but i would try this replacement pump need fuel to help them cool off
and when you run the tank down to almost empty and then only put 10 or 15 bucks in gas it will not help the pump cool off and make it overheat and burn up
 
i been through the same thing on one,a bad ground wire will cause it to fail because it works off constant variable voltage,and if the ground fails it cuts the flow rate down and also reduces the amount of voltage applied to it,once this happens the pump either over heats because it cant get enough voltage or it damages the relay unit,it would be better and cheaper if it would burn the relays out ,but it wont always do that, it gets the pump instead of the relay unit,try checking the ground wire real good on it and use a good pump,and verify that the voltage supply is correct to it when the key is switched off and on,if its low recheck the ground again,bad ground wires is the most common cause of pump failure and replacing pumps can be really expensive after a while,good luck on it,if you need more help with it i,ll be around sometime,good luck.
 
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