Question about 1999 Pontiac Sunfire
Fuel gauge bounces around. Won't give accurate reading
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Posted on Jan 02, 2017
it is one of two things the fuel gauge in the tank is bad or the gauge in the dash is bad...I would check with the dealer to see if they have seen that problem before...they maybe a recall for that problem...
Posted on Nov 18, 2009
The problem here is your "Stepper Motors" are failing in the Instrument Cluster. If your Vehicle has "LOW MILEAGE" it may still be covered under factory warranty. Check with your Dealer first! If not covered under warranty, most reputable Speedometer Repair facilities can service it for you. All "Stepper Motors" in the Instrument Cluster should be replaced at the same time as the OEM versions are prone to ultimate failure.Typically, there are 5 or 6 dependent upon whether or not you have a Tachometer. They are: Speedometer, Temperature, Oil Pressure, Fuel Gauge, Volt Meter and Tachometer. The replacement part must have X25 168 where the X indicates an improved model.
Posted on Dec 12, 2009
I've researched this problem thoroughly as all of my gauges on my '04 Bonneville GXP are producing erratic readings. The only two solutions are to replace the entire cluster which can cost in excess of $700 or replace the six "stepper" motors behind the cluster. Replacing them can only be done by deslodering the old ones and soldering in replacement ones.
Posted on Jan 14, 2010
Generally the sending unit is the culprit, to change it you have to drop the gas tank. I'm not sure on a 99 but, most of the newer cars and trucks the fuel pump and sending unit is all one piece. They can be spendy. You can check with car-parts.com for a used unit. Another option is to use your trip meter ( if you have one ) for a gas gauge. Simply zero the trip meter when you fill the tank and when you get 200 miles or so, maybe more, on a tank fill it again and zero the trip meter again.
Posted on Mar 26, 2010
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