Q: Vacuum sucking noise in a gas tank on a 2006 Jeep Cherokee Liberty when the car is turned off

asked by on May 15, 2016

2006 Jeep Cherokee Liberty. Gas tank makes sort of vacuum sucking sound whenever the car is turned off. Any ideas?

Gas Cap Replacement $87.91 - $199.77 Get a Quote

You’d want to have your EVAP canister vent valve checked. Because when they break and stick, they’ll often do that and make the sucking noise. That is a Jeep, and when you shut it off, the EVAP system actually has a pump in it that runs the check release.

Sometimes those things will get noisy and if the lights don’t come up, then just ignore it. But, a lot of times it is an EVAP vent valve sticking and not working right and the pressure building up. Of course, what you might do is start by replacing the gas cap. The gas cap is part of the venting system, and if it’s bad, it can do that. The gas cap will cost you 10-15 bucks. I’d start by replacing the gas cap. It might solve the whole problem.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Bubbles in gas

When your son poured bubbles into your gas tank, all of the fuel was contaminated. A car cannot run on contaminated fuel. The motor is designed to run on a complex fuel to air ratio and if the fuel is...

Air vents cannot turn off on 2006 BMW 530xi

Hello. The issue you are experiencing with your 2006 BMW 530xi is likely from a faulty blower motor, faulty blower motor resistor or a faulty blower motor control switch. If left on for too long, yes, it will drain your...

door lock problem

Hello. There is a computer that controls the door locks and the warning light that you see. It is known as the Body Control Module. Something has likely gone wrong with this module, which may or may not be repairable....

Leaking radiator

This is a very common problem with the Ford Explorer. The plastic tanks on the radiators will crack or the seal will leak. The intake manifolds on some years of Explorer's engines also can leak from the manifold or thermostat....

Auto climate control

Even without having specified what model Mercedes, yes they do use in car temperature sensors. Your issue can be related to the in-car temperature sensor or the climate control unit itself. Since Mercedes climate control systems are known for their...

Rough start and clicking noise

Hi There, It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate and eventually stall. The idle air control valve is a small valve on the engine's intake system that...

Four-wheel drive thumping noise. 2006 Mazda B4000

Hello. It sounds like the transfer case is going bad causing the thumping noise you are hearing. The transfer case transfers power to the front wheels so that all four tires are working during four-wheel drive. If the transfer case...

Crank but no start..

Hi. There is a good possibility that the timing belt has broken and is causing the engine to be out of time. The engine you have is an interference engine this means the clearance between valves and piston are very...

Shuts off and won't start for about an hour or so

Hi there. From the description you have provided concerning your vehicle's drivability problem, it hard to discern whether it does not turn over, or it does not start for about an hour after driving. If your vehicle will not turnover...

Related articles

How Full Do I Need to Keep the Fuel Tank at Any Given Time?
While While some people don’t think too hard about how empty their fuel tank gets or about how much they fill their tank when they do fuel up, others are convinced that there is some magical fuel level that will...
How to Choose a Jeep Grand Wagoneer
Due Due to a recent surge in popularity, the Jeep Grand Wagoneer is making a comeback. Since the vehicle was manufactured only throughout the sixties, seventies, eighties, and the early nineties, most Jeep Grand Wagoneers are no longer on...
A Buyer’s Guide to the 2012 Jeep Grand Cherokee
Though Though the Jeep Grand Cherokee is not a new model, it got a complete redesign in 2011, and the 2012 Jeep Grand Cherokee saw even more improvements. While other SUV manufacturers have sat on their laurels, Jeep has done...