Fuel gauge stopped working properly?

CARTER84

MEMBER
2004 CHEVROLET TAHOE
5.4L
V8
4WD
AUTOMATIC
240,000 MILES

Changed out faulty fuel pump and after a week my fuel gauge quit working properly. It either reads full or empty never in-between. Could the gauge be the issue, or could it be something else? Need to repair as it is very annoying not knowing if I am about to be empty or if I still have gas.

7 Replies

MIKE H R

MECHANIC
3,094 POSTS

The fuel pump, strainer and fuel gauge sending unit is one piece. The fuel float might be getting hung up on something or going bad. My guess is that it is not making a good connection in the fuel tank.

Mike

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Friday, September 23rd, 2022 AT 4:40 PM

CARTER84

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5 POSTS

Thanks.

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Friday, September 23rd, 2022 AT 7:52 PM

JACOBANDNICKOLAS

MECHANIC
109,709 POSTS

Hi,

I noticed we haven't heard from you for a couple of days. Have you been able to make any progress? We're interested in knowing.

Take care,

Joe

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Sunday, September 25th, 2022 AT 9:03 PM

CARTER84

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5 POSTS

Have not had a chance to drop the tank and pull it yet to check. But as soon as I do I will post an update.

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Sunday, September 25th, 2022 AT 9:40 PM

JACOBANDNICKOLAS

MECHANIC
109,709 POSTS

Hi,

When you replaced the fuel pump, was it the entire unit including the level sensor? If it was an entire unit, the new rheostat may be bad.

When you get time, let us know. I totally understand not being able to find the time to do things. LOL Also, here is a link you may find it of interest:

https://www.2carpros.com/articles/how-a-fuel-pump-works

Take care,

Joe