Thread: Fuel Level Sending Unit

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  1. #1 Fuel Level Sending Unit 
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    I have a 2000 Grand Prix GT that is supposed to have an 18 gallon gas tank. I've been running my own "experiment" lately because a friend thinks my fuel level sending unit is bad. If I let it get down to where the low fuel light comes on and fill it to capacity, it only let's me put on 12 gallons. I can't think 1/3 of my gas tank is low fuel, so where is the missing 6 gallons? Is it my sending unit on the fritz? I feel like I fill up more often than needed. Thanks!
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  2. #2 Re: Fuel Level Sending Unit 
    Killa Bee Scottydoggs's Avatar
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    your car still hold 3 to 4 gallons when the light comes on.

    when the light comes on in my regal, its only 14 gallons to fill it as well.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: Fuel Level Sending Unit 
    Moderator dsmuts's Avatar
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    When mine comes on i put 12-13 gallons in it it's normal. I've driven about 80 miles on the low fuel light with no problems other than an unhappy fuel pump.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  4. #4  
    Donating User Swiggles's Avatar
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    I think I've only filled up to 13 gals
    No more GP 04 Impala SS Indy:
    Gen V 3.4”|FWI|N* TB lq4 MAF|1.9 Modded Rockers|F&R Plogs|ZZP 3" Catted DP|ZZP 2.5" Catback|
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  5. #5 Re: Fuel Level Sending Unit 
    SE Level Member wavedout33's Avatar
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    I've filled mine up once and it was about 14.35 gallons....my dic is off it was reading 12.8...it is only .3 gallons off now
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  6. #6 Re: Fuel Level Sending Unit 
    Turbo is the way to go. BillBoost37's Avatar
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    Normal.. it's a gauge..not a precision instrument. We all deal with the same bs. The W aka worthless body cars seem to be the worst offenders I've found

    My Regal will toss the light, shoot out the LOW message on the DIC after it gets below 40miles remaining and ..... well let's say I've pushed that envelope way past 40 miles. Filling up, the most I've achieved was 16+ gallons.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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