Chevy Astro Fuel Pump Problems [Symptoms & Fixes]

A bad fuel pump can cause your vehicle to stop right in the middle of the road. However, the fuel pump doesn’t completely go bad without telltale signs.

Chevy Astro

In this post, I’ll explain the common symptoms of fuel pump problems in a Chevy Astro. This should help you take the appropriate steps to fix the problem early on.

Symptoms of Fuel Pump Problems in a Chevy Astro

No Faint Hum from the Fuel Pump

When you turn the ignition key to ON, you should hear the faint hum of the fuel pump as it primes itself. However, if you hear nothing after turning the key in the ignition, your Chevy Astro’s fuel pump may be bad.

Get a mechanic to check the fuel pump to ensure it is not stuck with sediments from the fuel tank.

The mechanic may need to tap underneath the gas tank several times. But if there is no hum after these actions, the fuel pump is bad and should be replaced.

Intermittent Fuel Pump Priming

Another sign your Chevy Astro’s fuel pump may be faulty is when it primes for some time, and at other times, it doesn’t prime at all. Dirty gas or clogged fuel filters could be the cause.

You should check if this issue only surfaces when the fuel level in your tank is low. You may also run fault codes to check for venting problems. You may need the assistance of a mechanic to run these fault codes.

The mechanic may also check the fuel filter and ensure it is not clogged. If it is, it may require replacement. Then test the fuel pump to confirm its working condition.

Lastly, be careful of the quality of gas you purchase for your Chevy Astro. Dirty fuel can ruin your fuel filter and fuel pump.

The Engine Stalls and Fails to Restart

If your Astro suddenly stalls when driving and fails to restart after several attempts, your fuel pump may be the culprit. If it cranks but won’t start, it is a confirmation that your Chevy Astro’s fuel pump is bad.

However, you can confirm this by verifying how much pressure gets to the manifold. If you are getting 35-40 psi, check your owner’s manual, as you may require 60-65 psi for prime.

You can build the prime by turning the ignition key ON and OFF several times. If the pressure is too low, the fuel pump is too weak to push the fuel to the engine and must be replaced immediately.

Sudden Loss of Power

When your Chevy Astro suddenly loses power while in traffic, it can be challenging as this affects you and other road users.

A sudden power loss can happen because the fuel pump has failed.

Get a mechanic to run diagnostic checks to confirm the overall condition of your fuel pump. If the fuel pump is defective, replace it immediately.

Whirring Noise from the Fuel Pump

If you notice whirring noises from your fuel pump, it is usually nothing to worry about.

But if you notice that the gas gauge has stopped working, you need to get a certified mechanic to check your fuel pump. It may require an immediate replacement.

Lurching Vehicle

If your Chevy Astro suddenly lurches while on the road, your fuel pump may have gone bad and require an inspection.

Your mechanic should carefully inspect your Chevy Astro’s fuel pump and replace it if found defective.

Can You Drive a Chevy Astro with a Bad Fuel Pump?

You cannot drive a Chevy Astro with a bad fuel pump. If the fuel pump has failed completely, the vehicle will refuse to start.

If you succeed in starting your Chevy Astro with a defective fuel pump, its inaction will cause your engine to overheat. When engines overheat unnecessarily, they can damage other vital components. This may cost you much more money than if you simply replaced the defective fuel pump.

So, if you suspect your Chevy Astro’s fuel pump is bad, don’t procrastinate. Get a mechanic to run diagnostic checks and replace the faulty fuel pump as soon as possible.

How Much Does It Cost to Replace a Chevy Astro Fuel Pump?

According to RepairPal, the average cost of replacing a faulty Chevy Astro fuel pump ranges from $671 to $807. The estimated labor costs range from $208 to $263, while components are priced from $462 to $545.

These price ranges do not include fees and taxes nor factor in the specific model year of your vehicle or unique location.

Bear in mind that related repairs may also be required, such as replacing the Chevy Astro’s fuel filter, which helps prolong the lifespan of the fuel pump. This may cost you an additional $87 to $116.

The price ranges are based on the age and number of Chevy Astros on the road.

Tips to Make Your Chevy Astro’s Fuel Pump Last Longer

  • Replace the fuel filter every 30,000 miles to prevent unnecessary strain on the fuel pump.
  • Do not use contaminated fuel in your vehicle. Contaminated gas is usually from rusty and poorly maintained underground tanks. Therefore, only buy fuel from newer gas stations.
  • Ensure your fuel tank is always filled most of the time. Fuel in your tank is a coolant for some components, including the fuel pump.
  • Do not drive with a bad fuel pump. Repair or replace it as soon as symptoms are detected.

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Wrapping Up

While the Chevrolet Astro is a reliable vehicle, it’s not immune to problems. The fuel pump in your Chevy Astro can go bad as you keep using the car.

But as mentioned earlier, the fuel pump doesn’t go bad without early signs. Pay attention to the signs, and get your fuel pump replaced early enough to prevent other problems.