Question about 2003 Chevrolet Malibu

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Yesterday my 99 Malibu stopped working. It would turn on, and after about 5 seconds would sputter out and slowly die. I'm pretty good with machines, but I am kind of inexperienced with cars, so I looked up how to fix it. After talking to a few people, I determined it was the fuel filter, so I replaced that. Now the car won't turn over all the way. It actually is doing less than before. I can't imagine what it would be, as I tried to be gentle with the fuel line when I unscrewed the fuel filter. I did notice that the assembly bolt/screw on the fuel line end wasn't rooted in place(I don't know if it should be or not). I checked under the car for fuel leaks, and there didn't appear to be any. Has anybody heard of this before? What could I have effected by changing the fuel filter that would do this?

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Basically I have had this same problem, I own a 2006 Chevy Malibu as I work On it myself to find out rare things about it and managed to solve them quick. Basically If you Turn the key and have someone sit and listen for a buzzing sound underneath the rear bottom seat it means your fuel pump maybe gone, or Fuse, (fuse Box In trunk of Car), Other issue is if you've replaced the fuel pump you have to be careful these new aftermarket fuel pump haven't been working very well with the malibu at all, only the original Delphi Fuel Pump works well, as it is expensive, but A life saver and less time Consuming. I had this issue after I replaced the old fuel pump which work, but not the sending Unit and put A new one and did not work after 2nd replacment. Killed me, But I desided to keep the old one and fixed the sending Unit now the car runs perfect with the sending unit working. Try it..

Posted on Oct 16, 2013

Testimonial: "I am fairly certain that that the only aftermarket part is the new fuel filter. I heard the buzzing from the driver's seat, so I am fairly sure that the fuel pump is working. The car makes the noises like it is trying to start, but it will not turn over and stay on."


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 2007 Answers


Mass air flow sensor.

Posted on May 13, 2009

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SOURCE: how can i fix a clogged fuel pump on a 2001 chevy

Have you changed the fuel filter? Did it die while driving, or just wouldn't start? Don't use starting fluid on a gas engine! It will cause a lot more problems than it solves. Ether, starting fluid is made for diesel engines... not gas, not ever. If it won't start, it isn't lacking ether. It's lacking gas, air or spark.

Posted on Jul 20, 2009

  • 15935 Answers

SOURCE: 2001 Chevy Malibu, 89,000 miles, 3.1 engine, won't start

CLICK HERE for the injector schematic.
CLICK HERE for the Ignition schematic.

Since the PCM uses info gatheres from the crank and cam sensors to calculate ignition - and there are no OBD codes - in all likelihood, the PCM itself is bad.

The Ignition Module, also transmits to the PCM.

It appears after all your testing - that the PCM is at fault.

It does not error report on itself (unfortunately).

The ignition timing is controlled by the Powertrain Control Module (PCM). No adjustment is necessary (distributorless ignition) or possible.

Please see the following....

The ignition timing is controlled by the Powertrain Control Module (PCM). No adjustment is necessary or possible.
The engines covered by this manual are equipped with distributorless ignitions, ignition timing is controlled by the Powertrain Control Module (PCM), as applicable. No adjustments are possible. If ignition timing is not within specification, there is a fault in the engine control system. Diagnose and repair the problem as necessary.
Ignition timing is the measurement, in degrees of crankshaft rotation, of the point at which the spark plugs fire in each of the cylinders. It is measured in degrees before or after Top Dead Center (TDC) of the compression stroke.
Ideally, the air/fuel mixture in the cylinder will be ignited by the spark plug just as the piston passes TDC of the compression stroke. If this happens, the piston will be at the beginning of the power stroke just as the compressed and ignited air/fuel mixture forces the piston down and turns the crankshaft. Because it takes a fraction of a second for the spark plug to ignite the mixture in the cylinder, the spark plug must fire a little before the piston reaches TDC. Otherwise, the mixture will not be completely ignited as the piston passes TDC and the full power of the explosion will not be used by the engine.
The timing measurement is given in degrees of crankshaft rotation before the piston reaches TDC (BTDC). If the setting for the ignition timing is 10 BTDC, each spark plug must fire 10 degrees before each piston reaches TDC. This only holds true, however, when the engine is at idle speed. The combustion process must be complete by 23° ATDC to maintain proper engine performance, fuel mileage, and low emissions.
As the engine speed increases, the pistons go faster. The spark plugs have to ignite the fuel even sooner if it is to be completely ignited when the piston reaches TDC. Spark timing changes are accomplished electronically by the engine and ignition control computers.
If the ignition is set too far advanced (BTDC), the ignition and expansion of the fuel in the cylinder will occur too soon and tend to force the piston down while it is still traveling up. This causes pre ignition or -knocking and pinging-. If the ignition spark is set too far retarded, or after TDC (ATDC), the piston will have already started on its way down when the fuel is ignited. The piston will be forced down for only a portion of its travel, resulting in poor engine performance and lack of power.
Timing marks or scales can be found on the rim of the crankshaft pulley and the timing cover. The marks on the pulley correspond to the position of the piston in the No. 1 cylinder. A stroboscopic (dynamic) timing light is hooked onto the No. 1 cylinder spark plug wire (2.2L engine only, on the 2.4L engines, special adapters are needed) . Every time the spark plug fires, the timing light flashes. By aiming the light at the timing marks while the engine is running, the exact position of the piston within the cylinder can be easily read (the flash of light makes the mark on the pulley appear to be standing still). Proper timing is indicated when the mark and scale are in specified alignment.

WARNING When checking timing with the engine running, take care not to get the timing light wires tangled in the fan blades and/or drive belts.

The engines covered by this manual are equipped with distributorless ignitions, ignition timing is controlled by the Powertrain Control Module (PCM), as applicable. No adjustments are possible. If ignition timing is not within specification, there is a fault in the engine control system. Diagnose and repair the problem as necessary.

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Posted on Aug 18, 2009

  • 119 Answers

SOURCE: 99 chevy venture. battery is fine but it won't start.

it sounds like the fuel pump or fuel filter

Posted on Nov 06, 2009

Testimonial: "At least I have an avenue to begin exploring what the problem may be. thanks!"

  • 1608 Answers

SOURCE: 99 cavalier ETS OFF warning light and check engine

Get the codes checked.This will tell you what cylinder is causing the problem.If the wires and plugs didn`t help then you probably have a bad coil.Hope this helps.Good luck.

Posted on Mar 23, 2010

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