Fuel gauge problems

Tiny
PEAKKR
  • 2009 HYUNDAI SANTA FE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 115,000 MILES

The fuel gauge will only go to half full, even with the tank full. How to correct this?

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Sunday, March 29th, 2015 AT 10:46 AM

12 Replies

Tiny
ED-WEEZY21
  • EXPERT
  • 250 POSTS

I am a certified hyundai technician and we see that problem all the time. Typically the fuel gauge problem is alongside a check engine light but not always. This is a common problem for the fuel senders to go bad on these. These gas tanks have 1 fuel sender on the fuel pump under the driver rear seat and it has a fuel sender on a sendin unit under the passenger rear seat. Replace both along with new locking rings and gaskets and be sure to install the fuel senders exactly how they came off. Disconnect the battery whenever working with fuel.

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Saturday, April 4th, 2015 AT 6:15 AM
Tiny
SANTAFER_09
  • MEMBER

I'm not a pro or well-trained technician but I love DIY.
My vehicle is 2009 Hyundai Santa Fe 2WD 2.7L.

I had been collected information about this project from internet and ordered parts I needed. Finally, I had fixed and there is no problem anymore.

You can check where I got information, I ordered parts and how to replace it.

http://studymachine015.blogspot.ca/2015/07/fuel-sender-issue.html

I hope it will be helpful.

Thanks.

2009 SantaFer

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Saturday, August 15th, 2015 AT 4:40 PM
Tiny
2CARPROS-ARCHIVES
  • 2004 HYUNDAI SANTA FE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 111,000 MILES
  • MERGED

2004 Hyundai Santa Fe 3.5 mileage 111,000. The gas gauge never registers full when I fill up, it takes about one day for gauge to show full.

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Thursday, May 4th, 2017 AT 9:02 PM
Tiny
2CARPROS-ARCHIVES
  • MEMBER
  • MERGED

Have the fuel module in the tank checked.

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Thursday, May 4th, 2017 AT 9:02 PM
Tiny
LISA HARRISON
  • 2003 HYUNDAI SANTA FE
  • MERGED

Engine Performance problem
2003 Hyundai Santa Fe 6 cyl All Wheel Drive Automatic 92,000 miles

Sometimes when the car is ideling, the fuel gauge will all of the sudden drop down to empty and the fuel light will come on. It happens when I have on the air conditioner. When I turn off the air and start to drive and it will eventually go back to normal. This has happened 3 times in the past week.

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Thursday, May 4th, 2017 AT 9:03 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS
  • MERGED

Hi Lisa,

I would suspect a bad ground, check those behind the headlight tightened onto the inside of the fender.

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Thursday, May 4th, 2017 AT 9:03 PM
Tiny
MORASSVINE
  • 2007 HYUNDAI SANTA FE
  • 79,000 MILES
  • MERGED

MY fuel gauge started to show empty when I just topped it off. Now it's all over the place. I might show full when I just filled it but when I turn it off and get back in to restart it it shows empty or maybe half full, you never know what it's going to read. Any ideas?

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Thursday, May 4th, 2017 AT 9:03 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS
  • MERGED

Check the fuel sending unit in fuel tank, It most probably has poor contacts.

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Thursday, May 4th, 2017 AT 9:03 PM
Tiny
MORASSVINE
  • MEMBER
  • MERGED

Do you know if the fuel sending unit is external or internal?

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Thursday, May 4th, 2017 AT 9:03 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS
  • MERGED

It is internal of fuel tank.
If you remove the 2nd row of seat and lift the carpet, you would be able to access the service hole.

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Thursday, May 4th, 2017 AT 9:03 PM
Tiny
MORASSVINE
  • MEMBER
  • MERGED

Thanks, I have removed the seat and found the access hole but how do you remove the black metal plate to get at the sending unit?

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Thursday, May 4th, 2017 AT 9:03 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,001 POSTS
  • MERGED

You need a special tool to turn it like a bottle cap to loosen and remove, after disconnecting the hoses and wire connector.
Remember to release the fuel pressure first. Unplug the fuel pump relay and crank engine until it fails to start.

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Thursday, May 4th, 2017 AT 9:03 PM

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