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raider2008
New User
Mar 13, 2011, 5:35 AM
Post #1 of 6
(3132 views)
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Faulty Gas Gauge
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Just bought a 2000 Chevy S-10 Blazer,4.3L with 133,000miles. My gas gauge is not displaying the correct amount of fuel in the tank.When driving,needle stays at 3/4 of a tank.When first starting,it shows empty. The vehicle runs fine. No idling issues,no sputtering. Just can't tell exact fuel amount. Any help? Please.
Steven
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 13, 2011, 5:50 AM
Post #2 of 6
(3128 views)
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Re: Faulty Gas Gauge
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That's probably a bad sending unit in the tank. You would need specific resisters to accurately test the rest of the system but if you just ground the purple wire and momentarily turn the key on. it should shoot to max full. if it does, i would replace the sender.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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raider2008
New User
Mar 13, 2011, 6:12 AM
Post #3 of 6
(3124 views)
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Re: Faulty Gas Gauge
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Thank you for your info. Steven
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techforfree
User
Mar 16, 2011, 10:01 AM
Post #4 of 6
(3114 views)
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Re: Faulty Gas Gauge
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I agree,its the sending unit in the tank,Your GM dealer does make an additive that cleans corrosion & sufler deposits off of the windings on the unit but its a bit salty,like $28.bucks a bottle but we have over a 50% sucess rate with so you can give that a go if you want,some say even good injectors will do the same but i've not had much luck with them..good luck
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rebelbabe
New User
Nov 19, 2012, 2:36 PM
Post #5 of 6
(2110 views)
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Re: Faulty Gas Gauge
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i just bought a 2000 chevy blazer 4.3 vortech and i also am having the same issue. and my check engine light comes on too. i was wondering if it was there wasnt enough pressure. but reading this and hearing that its the sending unit... is it all GM cars that have this issue??? everything in the fuel system is brand new so im stuck... any one know what i can do???
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 19, 2012, 2:47 PM
Post #6 of 6
(2102 views)
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Re: Faulty Gas Gauge
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You need to first read the rules for posting and then start your own question.
RULES
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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