Several months ago I had the new fuel pump installed on the truck. Ever since then, the truck has been having intermittent stalling issues. It used to happen on occasion. But now, it is happening with the increasing frequency. The stalling happens usually while I'm driving around 50 mph. Then, I would usually be able to restart it right away. But, if it fails to start up immediately, it would start after half an hour or so. The dash doesn't show any lights. There are no error codes either. I can hear the pump working too. I am unable to drive any longer distances as I already was towed before due to this stalling problem. Do you have any advice on what I should check next?
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