When to replace the fuel pump on a Chevy Blazer?

If you notice your Blazer’s fuel economy suddenly changing, or if it jolts when you accelerate, then you might need to replace your Chevrolet Blazer fuel pump with a durable upgrade from AutoZone.

Why does my fuel pump not start when I change it?

You always want to replace the fuel filter when replacing the fuel pump. This could cause the concern you are having. It may seem as you are getting enough fuel from the pressure regulator but if the pressure from the fuel tank is not correct, it will still not start. Another problem you could be having is spark.

Do you need to replace fuel filter when replacing fuel pump?

The fuel level sensor is a separate component attached to the fuel pump. This part does not always come with the fuel pump and sometimes is not interchangeable with aftermarket fuel pumps. Chevrolets have a common issue with fuel filters getting clogged. You always want to replace the fuel filter when replacing the fuel pump.

If you notice your Blazer’s fuel economy suddenly changing, or if it jolts when you accelerate, then you might need to replace your Chevrolet Blazer fuel pump with a durable upgrade from AutoZone.

What should fuel pressure be on GM 4.3L Vortec?

You can find this tutorial in Spanish here: Cómo Probar La Bomba de Combustible (GM 4.3L, 5.0L, 5.7L) (at: autotecnico-online.com ). The fuel system in your 4.3L, 5.0L, or 5.7L Vortec engine needs at least 50 PSI of fuel pressure to start.

What should the fuel pump pressure be to start the engine?

The fuel pump produces much more than just 50 PSI of course but the bare minimum the engine needs to start is 50 PSI. Anything less and it will crank for ever before it starts or not start at all. So, the very first thing you need to do is to verify that the fuel pump is delivering at least 50 PSI of fuel pressure while the engine is cranking.

Why does my Chevy fuel pump keep failing?

The Chevrolet service bulletin states that the cause of the repeat failures is due to worn or damaged electrical connectors at the fuel pump assembly. When you get the Delco replacement parts it comes with a new connector on the fuel pump side.

Where is the connector on a Chevy fuel pump?

When you get the Delco replacement parts it comes with a new connector on the fuel pump side. The problem is the connector on the vehicle side of the harness. In the online Chevrolet repair manual I use, a Tech Tip states, the connector should be replaced with the fuel pump assembly.

When did the Chevy fuel pump come out?

It started on Chevrolet truck models from 1996 to 2003 model years, but has expanded to other models as the connector and pump assemblies are not aging well. In fact, I have a financially strapped friend with an 04 Silverado that now caries a heavy rubber mallet in the truck.

How do you remove a gas tank from a blazer?

Make sure all the lines, hoses, and connectors are disconnected. Now that the tank is out, clean off the top and blow off with compressed air or a brush. Gas Fumes Can Explode, so Be Cautious! You can remove the fuel pump from the tank by tapping the ring with with a screw driver and working it around until it’s loose.

Where is the fuel pump connector on my Blazer?

This connector is located, at least on my truck, on the inside of the frame, driver’s side, over the rear axle. The pigtail from the fuel pump to the connector seemed OK, so that left the fuel pump itself. There’s a short red test lead on the fuel pump relay connector.

Where is the oil pressure switch on a K5 Blazer?

The oil pressure switch is located towards the top of the block near the distributor (this is the one we’re concerned with now), and the oil pressure sending unit is near the oil filter. Even if it’s the oil pressure switch, you should see voltage at the fuel pump for 2 seconds after turning on the ignition.

Is the fuel pump on my S10 Blazers defective?

Hard starts and a loss of power can be a sign that your fuel pump is defective. Chevrolet S10 Blazers with fuel injection were designed with an electric pump mounted inside the gas tank. Removing and servicing the fuel pump is within the abilities of the home mechanic, but one must always take special precautions when working with gasoline.

How do you change the fuel line on a Chevy Blazer?

Start the engine. Allow it to run until all the fuel is drawn out of the fuel lines and the engine stalls out. Turn the motor over (turn the key to start) for at least five seconds. This will remove all the pressure from the lines.

When was the last time my Chevy fuel pump failed?

The technical service bulletin that explains the cause of the repeat failure of the Chevy fuel pump replacement unit covers all years from 1996 to 2003 and includes all of the pickup trucks. Also included is the Tahoe and suburban and their GMC counterparts such as the Sierra and Envoy. Oh and don’t forget the Cadillac Escalade is also included.

Can a defective fuel pump cause a car to stall?

More details about this are below, but you might want to download your Chevy manual to help. The defective Chevy fuel pumps can cause a stalling condition or a no start situation that can leave you stranded.

Is it easy to replace a fuel pump?

Replacement of the fuel pump is not a quick or easy job. This is because the pump is tank mounted and the fuel pump is replaced as a unit. The less gas in the tank the easier it is to deal with. The replacement parts for the job are also not inexpensive.

How many Chevy 1500 fuel pumps are left?

Only 4 left in stock – order soon. . . Only 13 left in stock (more on the way). . Only 20 left in stock – order soon. . Only 9 left in stock – order soon. . Only 6 left in stock – order soon.

What to do if your fuel pump fails?

If the fuel pump fails completely, rather than wearing down or having a problem with the relief valve, then your vehicle becomes undrivable. Visit your local AutoZone to find the perfect fuel pump replacement and enjoy perks like free battery charging and engine diagnostic testing while you shop.

Can a bad fuel pressure regulator cause a misfire?

There are also many causes of engine misfires. It can be a problem in the spark plug or the ignition coil. A fuel injector problem can also cause engine misfires. It is also one of the symptoms of a bad fuel pressure regulator. A problem with this device can lead to low fuel pressure.

When to replace the fuel pressure regulator in your car?

Replacing the fuel pressure regulator as soon as you notice a problem prevents you from being stranded by an engine that no longer wants to run properly. For the lowest prices on fuel pressure regulators and controls, look to your local AutoZone.

Can a fuel pressure regulator leak into the vacuum hose?

Presence of Fuel in the Car’s Vacuum Hose. One of the fuel pressure regulator symptoms that one should never ignore is the presence of fuel in the vehicle’s vacuum hose. This is an automotive component that connects to one side of the fuel pressure regulator. If there is a problem with the regulator, fuel can leak into the vacuum hose.

What happens if the fuel pump fails on a blazer?

There are a variety of ways that Blazer fuel pumps develop problems, which is why there are a number of signs to look out for, such as uneven performance during acceleration. If the fuel pump fails completely, rather than wearing down or having a problem with the relief valve, then your vehicle becomes undrivable.

What are the symptoms of a bad fuel pump?

The engine may still crank when the key is turned, however it will not be able to start due to lack of fuel. This symptom can also be caused by a wide variety of other issues, so having the vehicle properly diagnosed is highly recommended. 3. No noise from the fuel pump

What do GM genuine parts fuel pump assemblies do?

GM Genuine Parts Fuel Pump Module Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These module assemblies help deliver fuel to your vehicle’s fuel injectors, providing a steady, reliable fuel supply to your vehicle’s engine.

What should the fuel pressure be on a GM 4.3L?

This is where you’ll connect your fuel pressure gauge (the first photo, in the image viewer, is of a 4.3L, and the second of the V8 engine). NOTE: In case you’re wondering, the factory manual specifies that the fuel pressure for the CSFI system should be between 56-62 PSI. The CPI system’s fuel pressure should be between 60-66 PSI.

What causes low fuel pressure in an engine?

1 Clogged Fuel Filter The fuel filter cleans the fuel entering the engine. 2 Bad Fuel Pump A bad fuel pump is probably the most common cause of low fuel pressure. 3 Bad Fuel Pressure Regulator The fuel pressure regulator controls the fuel pressure in the fuel rail.

What kind of engine does a 2002 blazer have?

I have a 2002 Blazer 4×4…love the body style and its off road manners HATE the 4.3 v6 ! Want good ole v8 power. Was thinking of a 5.2 l v8 w the comp and wire harness for same… ?will the trans work (4l60)? different EFI systems? need the comp and forward ECM harness ?

Can you use stock oil pan on s10v8 Blazer?

As far as the headers, s10v8.com sells custom ones and conversion mounts for the LS series motor. As far as the oil pan goes I was able to retain the stock truck pan because I no longer have the independent front suspension. I went to a solid front axle.

What kind of fuel injection does GM 4.3L use?

‘Spider’ Fuel Injection Basics There are two types of the ‘Spider’ fuel injector assemblies used on the GM 4.3L, 5.0L, 5.7L engines and this article will help you with both types. In case you’re wondering, one type belongs to the Central Port Injection (CPI) system and the other to the Central Sequential Fuel Injection (CSFI) system.

How to check no fuel condition on GM 4.3L?

I’ve also included how to check a no fuel condition with starting fluid (although this is not the most effective way to test the fuel pump). It’s been my experience that misdiagnosing a bad fuel pump is a common occurrence on the 4.3L, 5.0L, 5.7L GM vehicles with the ‘Spider’ fuel injector assembly.

The first sign that your fuel pump may need replacing occurs when your Blazer begins to slow down and sputter significantly with a full tank. If the condition does not improve after you first change your fuel filter, you must replace your fuel pump.

How do you change the gas tank on a Chevy Blazer?

Raise the tank to the top with the jack, and reinsert and screw in the holding straps with a screwdriver. Raise the rear of the truck with the jack, remove the jack stands and lower the truck with the jack. Refill the gas tank. Reconnect the battery. Reconnect the spare tire into the spare tire harness beneath the truck.

Can a corroded fuel tank stop a Chevy Blazer?

When you and your Chevy Blazer wind down a mountain road with the wind at your back, nothing can stop you. Except, that is, an old, corroded fuel tank. Maintain your vehicle’s mountain climbing performance with a Chevrolet Blazer fuel tank from AutoZone.

What is the diysave10 code for Chevy Blazer?

Use Code: DIYSAVE10 Online Ship-to-Home Orders Only When you and your Chevy Blazer wind down a mountain road with the wind at your back, nothing can stop you. Except, that is, an old, corroded fuel tank. Maintain your vehicle’s mountain climbing performance with a Chevrolet Blazer fuel tank from AutoZone.

What to do if your Chevy fuel pump fails?

Chevrolet fuel pump failures are a common and growing problem. If you have a fuel pump harness connector that looks like the flat one on the right or the square one at the bottom, then consider replacing it when replacing the pump. More details about this are below, but you might want to download your Chevy manual to help.

When to replace the fuel pump on a Chevy Blazer?