When I am driving my engine looses power, I have a new fuel pump, and filter, Starts fine but has very little HP, my work van has over 245,000 miles on it. No heavy smoke coming from tailpipe, but has been a long time since i changed the sparkplugs, or could it be the electronic computer system on board, my chev. Express is a 2001, 6 cylinder., any help is better than nothing thank you larry.
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I Think Your Problem Is Still With The Fuel Supply,Have You Changed all Fuel Filters,Follow All The Fuel Lines Make Sure There Are No Kinked Fuel Hoses,Some Times You Find Small Filters In The Top Of The Fuel Injectors. Hope This Helps
It very well could be the fuel pump, alot of time when they are going bad they will do that. If the check engine light stays on while running that would indicate a sensor is bad or maybe just unpluged. you can have a pressure test preformed on your vans fuel system which would tell if fuel pump is bad or not.. If check engine light does not stay on, i would bet it is the fuel pump.
ENGINE STALL WHILE DRIVING COULD BE STOPPED UP FUEL FILTER OR FAULTY FUEL PUMP.IDLE SPEED TOO LOW.OR IGNITION COIL HAS A LOOSE ELECTRICAL CONNECTION.FAULTY IGNITION MODULE.BAD PLUGS AND WIRES. I WOULD DO A LITTLE TUNE UP.CHANGE FUEL FILTER AND AIR FILTER.IF SPARK PLUGS AND WIRES HAS OVER 30000 MILES ON THEM I WOULD CHANGE THEM.ALSO FUEL FILTER IF OVER 30000 MILES.CHANGE IT CLEAN FUEL INJECTORS. TO TROUBLE SHOOT CAR I WILL DO A LITTLE TUNE UP FIRST TO MAKE EVERYTHING TOP NOTCH ON THE ENGINE BEFORE I GO TO NEXT LEVEL.BUYING NEW PARTS DONT NEED.GET VECHICLE SCANNED WITH A SCANNER. THAT WILL ALSO PIN POINT PROBLEM QUICKLY.BUT DO THE LITTLE TUNE UP FIRST IF EVERYTHING PAST 30000 MILES MARK.SCAN VECHICLE FOR FAULTY IDLE SPEED CODES OR FAULTY IGNITION MODULE CODE THEY WILL COST MORE MONEY TO FIX.PARTS HIGH.
sounds like a possible pluged fuel filter or a tired fuel pump. the pump is cooled by the gas. so if you work it at 1/4 tank or below it tends to get hot. but towing may make it hot anyway. check fuel pressure and the replace the fuel filter
If this happens every time you start your truck and it shuts off the same each time, you just might have a dirty fuel filter only allowing so much gas pass through until it clogs once again. I once had a chevy van, when I would drive it, would go a few miles and engine would shut down. I would wait 10 or 15 minutes, it would start up and allow me to drive a few more miles then shut down again. I changed the fuel filter, It was fine after that.