car hesitates when starting, sluggish when driving and pu...

Q: car hesitates when starting, sluggish when driving and put 15 gallons of gas in gauge still says low fuel

asked by on July 24, 2017

car hesitates when starting, sluggish when driving and put 15 gallons of gas in gauge still says low fuel is it fuel pump or relay?

It sounds like you may have a couple of different issues going on. There are a number of things that may cause the car to hesitate when accelerating such as low fuel pressure, a dirty or faulty mass air flow sensor, clogged or dirty fuel injectors, a faulty throttle position sensor or potentially a bad fuel pump. Other things like a vacuum leak or faulty ignition components such as bad spark plugs or spark plug wires may also cause this kind of hesitation when accelerating.

The fuel gauge fluctuation is a problem likely related to your fuel tank sending unit. The fuel gauge sending unit is a small float type component (or sensor) inside your fuel tank that measures the level of the fuel inside the tank. As the fuel level drops, this change is detected and relayed in the form of a signal to the car’s computer which then displays the reading on the fuel gauge in your dash. I would recommend having an expert from YourMechanic come to your location to diagnose and repair your vehicle.

Was this answer helpful?
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

Get a quote

What others are asking

I have a illuminated Service AdvanceTrac Light and my back passenger rotor is destroyed within minutes of me driving after installation

Hi and thanks for contacting YourMechanic. The AdvanceTrac will need to be adjusted for the height difference. As for the rotor being destroyed after putting on the lift, check the caliper to see if the line to it is long...

Oil change question

Hey there. Your car has an oil capacity of 4.8 quarts. Keep in mind that some of this will be also absorbed into the oil filter once you start the engine up. Be sure to check the oil immediately after...

Replaced throttle body high idle

Hi There, As you may know, after cleaning the throttle body your car needs to go through a "re-learning" process to bring the idle back down. Try doing the following which should bring the idle back down to a normal...

Related articles

3 Essential Things to Know About Your Car’s Seat Belts
A A seat belt is also known as a safety belt, and is intended to keep you safe during a sudden stop or car accident. The seat belt reduces serious injury and death in a traffic accident by keeping passengers...
Why Are Objects in the Mirror Closer Than They Appear?
Take Take a second to look at your passenger side view mirror and you’ll see a few words printed at the bottom of the glass. It’s a warning that reads “objects in mirror are closer than they appear.” Objects seen...
Arkansas Speed Limits, Laws, and Fines
Following Following is an overview of the laws, limits, and fines as they relate to speeding traffic violations in the state of Arkansas. Speed limits in Arkansas 70 mph: rural freeways and interstate highways, as posted 65 mph: trucks on...