I have a problem when my car hits a hard bump in the road at highway speeds. When I hit a bump the car seems to stumble/hesitate and lose power just for a quick second Then goes back to running fine. It runs great the rest of the time. It seems like it happens when the rear axle hits a Hard bump in the road. I don’t think it’s coming from the front Which makes me think it is a fuel line/pump issue or an electrical issue that causes some kind of short when I hit a bump. I put a new fuel tank and hot wire kit along with a fuel pump in about 10 years ago. Everything else except for a bigger down pipe is pretty much stock. Any one have any idea what could be causing this or what I should check? Thanks for the help!