When customers give us the opportunity to respond, they are never disappointed. Due to the complexity of installing and diagnosing a fuel pump, having your fuel system repaired by a qualified service technician is strongly advised.Signs of a Bad Fuel Pump. Rough Running at Idle and Low Speed. Engine Stalls when Vehicle Temperature Rises. Vehicle Losses Performance (when climbing a hill or hauling heavy cargo). Engine Speed Variations While Driving at a Steady Speed. Check Engine Light Comes On. By leaving your feedback you show for us in the best way how we are performing our service and about the quality of our products. Customer service is our priority, we are every day looking to get better for making you satisfied. We also offer Next Day Air if necessary, ask us for quote. Have your system serviced by a professional to guarantee a long and trouble-free system for years to come.