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Fuel system problems

Old 01-20-2018, 08:36 AM
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Join Date: Jan 2018
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Default Fuel system problems

Last summer my 07 2.4 camry would not start, but only once the engine was warm. Replaced the fuel pump and the problem was solved until the fuel pump stopped working completely. Replaced the fuel pump AGAIN (both were cheaper models) and the car ran and drove fine for about 3 month. The fuel pump went out again! Replaced it with a higher priced Denso pump, now the car is throwing system lean bank one code, but runs fine. Anyone experiened anything similar? I'm out of ideas.
Old 01-20-2018, 11:01 AM
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Join Date: Jan 2008
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Posts: 11,684

The fuel pump is cooled and lubed by fuel. Fuel both surrounds the pump and runs through it.

The following can cause pump damage. Running low on tank fuel. Debris in the tank plugging the sock filter restricting fuel intake. Debris being drawn into the pump to limit fuel intake.

Running out of fuel either by pump failure or by running the tank dry can cause a lean code. The engine is running lean due to less fuel available.

It takes a few driving trips for the computer set any code(s). The two failed pumps might been enough to set a code(s).

Suggest you clear the code(s) and assuming the new pump does not fail. Determine if they come back. If they don't come back, no worries.

Often with a lean code there is an additional code that is more specific to the problem area.
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