How to test the fuel pump on a Chevy Malibu?

The most accurate way to test the fuel pump on your 3.5L Chevy Malibu (Pontiac G6) is to use a fuel pump pressure tester. This fuel pump pressure tester is connected to the Schrader valve (see photo above) which is located on the fuel injector rail.

Where is the purge vent on a Chevy Malibu?

Attached to the fuel tank, right side, about the size of a soup can. You’ll need to drop the tank down a bit to get it out. Purge is under the hood and would depend on what engine you have as to exact location. You’ve ruled out the fuel cap already?

Where is the vent solenoid located on a Chevy Malibu?

The vent solenoid valve is located where it is to keep it away from the elements but then it’s not easy to service. The good news is that it’s usually not something that’s going to affect the driveability and thus you can take your time finding a reputable shop.

Can a fuel leak cause a Chevy Malibu to stop running?

While P0449 is not going to cause the Malibu’s engine to stop running, it should not be treated lightly. You could have a fuel leak. Pay extra attention to your tank level and make sure you are not leaking fuel. We recommend taking it in and/or dealing with it right away.

What causes a Chevy Malibu to throw a p0449?

Fuel Filler Neck – There is often a gasket where the fuel filler neck connects with the gas tank. This gasket can dry out, especially with vehicles that spend their time in dry climates. When it dries out, the fuel tank can’t hold pressure anymore, it may erroneously throw P0449.

What is the trouble code on a Chevy Malibu?

This trouble code is a reference number that is given to you when you plug your Malibu into a OBDII scanner. P0449 deals with the evaporative emissions control system. It often appears with, or is related other codes, such as P0420, P0446, and very often P0440. P0449: Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

How can I tell if my fuel pump is failing?

Check the fuel pump fuse. Often, it’s not the pump itself that fails to function, but the power that supplies it. Check in your owner’s manual for the location of the fuse box, then find the fuse that corresponds to the fuel pump. Pull it out and inspect it for signs of failure.

Can a bad fuel pump make a car not start?

A bad fuel pump will make your 3.1L or 3.4L Venture (or Malibu, Regal, Skylark, Corsica, Impala, Venture, etc.) crank but not start. Here are some more specific symptoms: All of the coil packs, sitting on top of the ignition control module, are creating and delivering spark to the spark plugs.

Why is my GM 3.1L fuel pump not working?

CASE 2: If the fuel pressure gauge registered 35 PSI. This fuel pressure gauge result lets you know that the fuel pump is working and delivering enough fuel to the fuel injectors. The reason your 3.1L or 3.4L GM vehicle is not starting is due to another reason.

How to test the fuel pump in a mini van?

This is due to the fact that GM has included a Schrader valve on the fuel rail to which you and I can attach a fuel pressure gauge to. Using a fuel pressure gauge to make sure that enough fuel is reaching the fuel injectors is the most accurate way to diagnose the fuel pump in your car or mini-van.

How to test the fuel pump on a Chevy Malibu?