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01-11-2008, 07:58 AM
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#1 |
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Registered User
Join Date: May 2007
Location: Emporia, kansas
Posts: 300
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gas gauge quick test.
Gas gauge not working in 68 chvy with 327. Is there a quick way to tell if its the gauge or in the tank. I have read lots of other threads about testing this and that. Not sure what volts or ohms I am looking for. A test light I can handle. Barely.
Gary The gauge is stuck on empty THanks again Last edited by acl; 01-12-2008 at 05:08 AM. Reason: left ouy current status |
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01-11-2008, 10:09 AM
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#2 |
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Zappaphile!
Join Date: Apr 2007
Location: Los Banos, California
Posts: 228
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Re: gas gauge quick test.
what is the gauge doing or not doing. Thats a good starting point.
Pull the wire off the sender at the tank.. if the tank goes all the way over past full, it's probably in your sending unit.
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1969 C20 LWB Camper Special - The Beater.. 1998 Cheyenne V6 - 4/6 Drop - For The Son |
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01-11-2008, 11:23 AM
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#3 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: gas gauge quick test.
Then, with the egnition on, take that same wire and ground it to the body of the tank. If the guage drops to empty, then everything from the wire to the guage is fine, and the problem is in the tank.
If the guage doesn't react to either of these, then it's time to start troubleshooting more, but more times than not, I have found the wire to be corroded and green and cut underneath the chrome sill plate in the drivers door jamb. |
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01-11-2008, 02:24 PM
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#4 | |
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Crew Cut
Join Date: Dec 2005
Location: MONTGOMERY,AL
Posts: 757
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Re: gas gauge quick test.
Quote:
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85 SWB 1/2 TON CREWCAB/5.3 03 CHEV 3500 DURAMAX CREW CAB 85 CHEV SWB/TPI 06 CHEV TAHOE (WIFES) 30 MODEL A HOT ROD 07 HARLEY DAVIDSON BAGGER 09 STREET GLIDE AN  D A LOT MORE JUNK
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01-11-2008, 02:35 PM
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#5 |
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Project Junkie! Fishing Poor!!
 
Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
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Re: gas gauge quick test.
67-72 sending units run 0 to 90 ohms. 0 is empty and 90 is full. WES
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On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys |
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01-11-2008, 04:02 PM
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#6 | |
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Registered User
Join Date: Oct 2007
Location: Garageless, Missouri
Posts: 408
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Re: gas gauge quick test.
Quote:
In my past experience, 98.657% of the time it was the sending unit since it has moving parts that wear out but time is money and money =time, but guessing also equals time and money also. This is just my other hobby idea. Got a slot car track? The hand controllers are potentiometers. Hook it up wires at tank that go to gauge and see if changes happen. Also check the the wires for continuity between the sender and gauge.
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R.I.P ESLL Even as the body dies the spirit lives on in the people you touched |
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01-11-2008, 04:12 PM
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#7 |
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Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: gas gauge quick test.
I just got a new sending unit from LMC and would not work. Had to drop the tank to check it and it was a bad solder joint and the float filled with gas
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69 Chevy 4x4 383 Power 
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01-12-2008, 12:04 PM
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#8 |
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Registered User
Join Date: Oct 2007
Location: rockville, md
Posts: 257
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Re: gas gauge quick test.
Does the float come out when you pull the sending unit?
TJ |
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01-12-2008, 03:53 PM
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#9 |
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Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: gas gauge quick test.
yes its all one piece the suction pipe filter screen float and reostat
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69 Chevy 4x4 383 Power
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