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Q: My van loses power going uphill sputters like it's going to die I've changed my fuel filter and it has not helped

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My van loses power going uphill sputters like it's going to die I've changed my fuel filter and that has not helped
My car has an automatic transmission.

A: Hello. If the vehicle only does this while ...

Hello. If the vehicle only does this while going uphill and no other times then it is usually caused by a failing catalytic converter or a weak fuel pump. Both of these will cause this as well as a failure in one of the sensors.

I usually start by scanning the computer for codes to see if anything comes up. If not then I monitor the sensor readings and check the fuel trim readings to see if it is a sensor issue or a fuel system problem. If nothing comes up there then I check the converter.

If you are going to have this loss of power inspected, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this problem.

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