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02 Aztec, Gas Gauge
02-16-2014, 12:04 AM (This post was last modified: 02-17-2014 10:26 AM by Garner.)
Post: #1
02 Aztec, Gas Gauge
Gas gauge stopped working right after new battery installed. Fuel pump replaced October 2013. Gas needle will stay near or on full until the tank is actually empty. Then the needle drops down to empty and sensor will kick in with the low fuel warning light. What is the worse cost scenario?
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02-16-2014, 01:26 AM (This post was last modified: 02-17-2014 10:30 AM by Garner.)
Post: #2
02 Aztec, Gas Gauge
Worst case is you ran out of gas with a 12 year old car and are stuck somewhere.

If you want to know what to do about a specific issue then please start a new thread with more info.
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02-16-2014, 09:50 AM (This post was last modified: 02-17-2014 10:29 AM by Garner.)
Post: #3
02 Aztec, Gas Gauge
I put your issue in it’s own thread for you. Now we need more information to be able to help you. Year, Model, Engine, Transmission, Mileage, & a detail of what problem you are trying to solve.

Thanks for using the forum,
Garner

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02-16-2014, 02:34 PM (This post was last modified: 02-17-2014 10:30 AM by Garner.)
Post: #4
02 Aztec, Gas Gauge
(02-16-2014 09:50 AM)Garner Wrote:  I put your issue in it’s own thread for you. Now we need more information to be able to help you. Year, Model, Engine, Transmission, Mileage, & a detail of what problem you are trying to solve.


I have a 2002, Pontiac Aztek, V-6 Engine, Automatic Transmission with 210,000 miles. Gas gauge stopped working day after new battery was installed. The gas gauge stays near or on full until tank is almost empty. Then the sensor kicks in and gas needle drops down to empty and low fuel warning light comes on. Gas tank takes about 15 gallons and warning light comes on when 1 gallon of gas is left. Gas gauge stopped working in December 2013. Read on the forum about using the trip mileage, which is a good temporary solution. When the gas gauge stopped working in October 2012, I had a new fuel pump installed for $700, which fixed the problem until now. Thanks for your help.
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02-16-2014, 04:06 PM (This post was last modified: 02-17-2014 10:31 AM by Garner.)
Post: #5
02 Aztec, Gas Gauge
Have done a boat load of these combined pump / gauge tank units that cost a small fortune and all I can add is some of the aftermarket parts do fail early. I have been using strictly OEM replacements just for that reason. Sometimes it's wear and sometimes it's a film of varnish on the segmented wiper part of the gauge assembly. About the only "easy" suggestion is to try a bottle of the special GM tank / injector cleaner, which runs around $25 from a dealer. Have been told that the issue is from the additive package in the newer fuels, which eats away at the coating inside the tank and spreads it around the system. Can't say I fully believe that but it's certainly a possibility. If nothing else you will have a VERY clean fuel system after giving it a shot.

Edited to add: the OEM part comes with a new gauge module, which sits on the outside. (small black box) Could be the module has gone bad but more likely it's the internal section. Oh, and if there was a bad ground the pump would not work correctly so you can pretty much rule that out.
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