You might have a defective fuel tank pressure sensor!
I replaced the knock sensor, crank sensor, fuel filter, pressure regulator.. Clean the idle air control valve aswell nd nothing! The first symptoms that I saw was the rpm gauge immediately went to zero.. Nd stayed while I was accelerating, it's been there ever since. The car turns on every second time I turn the key over but once the engine is warm, it only cranks until engine is cooler then turns on. I know it's electronic but can't find what it is.. The engine sounds like it's in need of a lil more gas..
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I sed a rubber hammer taped the fuel tank,then ,when i turned on the ignition the fuel pump hummed .vehicle started but would not stay running..after several attempts the fuel pup stoped humming .im replacing the fuel pump.
SOURCE: 2003 Malibu won't start
If the theft light is not on, then it's not related to the security lock-out. This is classic fuel pump failure. If you don't hear the 2 second hum of the fuel pump when you turn the key, it has failed. If you hear it and you still have NO gas to the engine, it could be debris in the strainer or a severely clogged filter.
SOURCE: how to bypass passlock on 1999 chevy malibu ?
Does the dash gauges and digital mileage and idiot lights work when you turn the key on?
SOURCE: 2003 chevy malibu that cranks but won't run
If you haven't done so already, have the cam and crank shaft position sensors checked, or replaced, You have replaced everything else.
SOURCE: 1998 chevy c15 5.7 SFI SYSTEM
My truck did this after I replaced the fuel pump. Turned out to Fuel Pressure Regulator. It would crank and crank but never start. It's located underneath the black plastic manifold on the side of the injectors.
SOURCE: 1999 chevy malibu, stalls, no restart after
I had the same problem-my check engine kept coming up with crank sensor(replaced several times- the car would run for 2 days then stall again)finally checked and replaced the wiring harness and the car ran great for awhile. Now I have a whole new problem(abs lights started coming on and the gauges all died while driving at which point the car just stopped and woulkd not restart)thinking alternator(the battery works great in another car)
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I replaced the knock sensor, crank sensor, fuel filter, pressure regulator.. Clean the idle air control valve aswell nd nothing! The first symptoms that I saw was the rpm gauge immediately went to zero.. Nd stayed while I was accelerating, it's been there ever since. The car turns on every second time I turn the key over but once the engine is warm, it only cranks until engine is cooler then turns on. I know it's electronic but can't find what it is.. The engine sounds like it's in need of a lil more gas..
sounds like you have low fuel presure defective fuel pump
Have the IGN module in the distributer checked. Orillys has a machine that will check it you must remove it and take it to them..
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