If you don’t hear it, you should manually check the fuel pressure at the fuel rails. Since the fuel pump is in your Tahoe’s gas tank, you may want to get a second set of ears so you can be absolutely sure you don’t hear it. If you hear nothing, that strongly indicates that the fuel pump is bad. That’s the fuel pump priming the fuel system. If the engine isn’t starting, turn the key to the on position and listen carefully. The fuel pump is often not monitored by the engine’s computer, which means it doesn’t activate the check engine light when trying to figure out why your vehicle is randomly dying. The engine can die if the fuel pressure is not high enough to atomize the gasoline properly. The fuel pump sends highly pressurized fuel to the fuel rails. Bad Fuel Pump This is what a priming fuel pump sounds like.Īnother common reason that your Tahoe may be starving for fuel is a bad fuel pump. If you don’t hear any noise, that indicates a faulty fuel pump, which is covered in the next section. You should hear the fuel pump trying to prime your Tahoe’s engine. If it makes a hollow sound, it’s probably empty. Even if it indicates there is fuel in there, bang on the tank. The most likely cause is an empty fuel tank aided by a fuel gauge that’s not as accurate as it looks.
The most common reason your vehicle shuts off when driving is a lack of fuel. If your motor runs fine and suddenly dies, one of these three things is abruptly taken away. Your Tahoe’s engine needs three things to run properly air, fuel, and spark. There’s usually a button that deactivates this feature, but you’ll have to push it every time you start your Tahoe. If your engine shuts down until you let off the brakes or move the steering wheel, it’s normal. More and more cars and trucks are coming with a feature that kills the engine at a stop light. But we don’t recommend driving anywhere until your Tahoe is fixed since dying at the wrong time can cause a collision. Parts stores can scan it for you if you don’t have access to a scanner. They can provide valuable insight as to what system is causing your vehicle to die. It sounds awful as the timing belt or chain slaps the timing coverĬhevy Tahoe Shuts Down When Driving: Top CausesĪlways start your Chevy Tahoe shuts down while driving diagnosis by looking to see if there are any stored trouble codes. It may be intermittent, there should be trouble codes Usually, the battery light will be on before the engine dies You won’t hear the fuel pump priming (check below for the sound)Īnytime, particularly after a big bump or hard corneringĪfter the battery light has been on for a while You should hear the fuel pump priming, the gas tank should sound hollow There should be a button to deactivate this feature (check the owner’s manual) Click the links in the “Cause” column to get to the relevant section of the article for your vehicle. Use this table to help you quickly determine why your Chevy Tahoe shut down while driving. Shuts Down While Driving Quick Help Table
#02 tahoe dies but starts right backup code
If it is, you’ll want to start with whatever trouble code you get from an OBD2 scanner. Before looking at anything, is the check engine light on? Vehicles are a lot harder to control without power brakes or steering.īelow is a list of the most common reasons your Tahoe would randomly die while driving. If your Chevy Tahoe is shutting down while driving, it’s a real safety hazard.
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