What happens if you change your fuel pump on your car without changing the fuel filter?

had a mechanic replace the fuel pump on my chevy van because the engine would crank but not turn over. car ran fine for a week then same problem, crank but no turn over. brought it back to him and he said it started right up. drove it for a week then same problem, crank but no start. brought it back to him this third time, and he replaced the neutral safety switch. car ran for about a week then same problem, crank but no start. by this time, i figure he's ripping me off or doesn't know what he's doing. i decide to take to another shop and they tell me its bad fuel pump, the very same problem first shop was supposed to fix. gave this new shop permission to replace pump again (if it was ever replaced the first time). this shop told me that the first shop never even replaced the fuel filter. even if the first shop had replaced the fuel pump, by not replacing the filter at the same time, could this have been the cause of my vehicle continually breaking down?
What happens if you change your fuel pump on your car without changing the fuel filter?
The fuel filter doesn't usually plug up completely all at once. The sign of a dirty fuel filter is lack of power or cannot maintain highway speeds. The engine will usually start with a dirty fuel filter because there is enough gas getting through to start the engine.

It could just be the fuel filter relay. My nephew had this same problem. It appeared as if the fuel pump was not working but before changing the pump we checked the relay. A new relay is about $20 and you can get a used one at a scrap yard.
What happens if you change your fuel pump on your car without changing the fuel filter?
not changing a fuel filter when u changed the fuel pump is like taking a shower and putting on the same dirty clothes feels good for the moment then u start to smell sooner than later
pluasably very likely

sometimes it happens that a new pump will only last a short time.

aftermarket electric pumps of the less expensive grade are a bit notorious for it but always want new filter AND SOCK... with a new pump
I would be looking at the coil or the ignition.The ignition has contacts in it if they are not operating right it could well be it but also have the coil checked out.I don't think the problem your having is the fuel system.Also replace your ignition module in the distributor that could be also related to the problem of it not starting.Because all of what your saying I believe is in the ignition system and not the fuel system.The next time it doesn't start check to see if you have spark at the plugs by pulling one of them and hook up a spark tester you can get at a parts store will have them.Place the spark tester on the spark plug wire and watch for a spark but have someone else turn the ignition to the start position and crank it.If no spark your problem is in the ignition primary side which is the coil or the ignition module in the distributor if you have the coil in the cap type of ignition.If you have any other questions email me at hgm20002000@yahoo.com

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any advice appreciated