“My truck will start but will not stay running. It dies after just a few seconds. I replaced the fuel pump but it still does it.” In this case the fuel pump could be the problem or it could be something else entirely. The fuel pump was replaced without any formal testing or proof the pump was the cause. This was an expensive guess. As it turns out the fuel pump was not the issue. The computer lost the theft code because battery voltage was too low. All it needed was the battery charged (it had not been driven for a few weeks) and the theft system relearned. This was about a quarter of the cost of the new fuel pump that had been installed. Proper testing and diagnoses is usually more efficient than guessing and replacing unneeded parts.
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