Question about Volkswagen Jetta

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My 1997 vr6 jetta runs for 20 min then loses all power to the fuel pump. after sitting for like fifteen minutes it will start back up and run for another twenty minutes.. i already replaced the fuel pump relay and the fuel filter n it still does it.

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First of all get the fuel pressure checked.If the pressure of fuel is low from what is required then replacing the fuel pump and fuel filter will not help.You can get fuel pressure checked at any local car garage.This will confirm if the pressure is low due to any fuel leak or loose pump fitting.But if fuel pressure checked ok then the other possibility is the fault in fuel pump relay.It has to be checked.The fuel pump relay is located on the drivers side under the dash. It is the first one on the left in the bottom row. 
Also get the fuel pump connections checked at fuel pump relay.It will show exact 12 volt.in some cases the relay is getting overheated and due to that it stops functioning and causes such problems.
Also check the fuel strainer.  Fuel strainer (attached to the bottom of the fuel pump) .
The other possibility can be the fuel pump itself.In some cases Compatible pump does not works.Did you got original fuel pump and fuel filter replaced or compatible.If not then get OEM fuel pump and filter.

If the fuel pump you installed was not OEM original equipment manufacture, that is the problem. The fuel pressure it takes to run you vehicle depends on 60 psi fuel pressure constant. Inexpensive fuel pumps are that way for a reason, there are not as good and cannot hold pressure. Replace fuel pump with OEM fuel pump to repair problem. Also cheaper fuel pumps don't last half as long, even if they do run.
But if you have used original fuel pump and filter then ignore this last possibility.
Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.



Posted on Jul 14, 2010

  • Jason Jul 15, 2010

    if the fuel pump is bad would it trip something other than the relay to shut off power to the pump. I bought two new relays.. when it shut off i switched the relay and it still did not have power to the pump. but if i wait half hour it does have power.

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