New Video.. Testing Low Fuel Warning Lamp 1977-1982
08-17-2011, 09:49 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
New Video.. Testing Low Fuel Warning Lamp 1977-1982
This Video is new and should help test your module before you put it back in the car.
If all goes well, we will have the power steering control valve video done this week.
Willcox
If all goes well, we will have the power steering control valve video done this week.
Willcox
Last edited by Willcox Corvette; 08-17-2011 at 10:05 PM.
08-17-2011, 11:54 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
08-18-2011, 07:59 AM
#4
Race Director
What ? Your working too hard ! 
Zero and infinite are on opposite ends of the scale.
0 - 45 - 90 - 500 - infinite
Hey , have you ever tested to see if it takes a full 0 to turn on the light or will say 3 ohms turn it on , OR will 7 or 8 ohms bring the light on dimly ?
I'll go test it with the Willcox tester you sent me.
Zero and infinite are on opposite ends of the scale.
0 - 45 - 90 - 500 - infinite
Hey , have you ever tested to see if it takes a full 0 to turn on the light or will say 3 ohms turn it on , OR will 7 or 8 ohms bring the light on dimly ?
I'll go test it with the Willcox tester you sent me.
08-18-2011, 04:22 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I'm getting my ***** busted again by Roger... I'm never drinking again at midnight.
Roger, I've never tested it and looking at the schematic on the module I would say what ever input it takes to get the input voltage to approx. 3.4 volts. The issue with testing is that you have to wait for it to light up... but I've never really worried about that. There are two criteria to be reached, 1 it has to be below the limit threshold and 2 it has to stay there. This is why it won't flash on and off when the tank sloshes. The grounding simulates and empty tank or zero ohms. Initially I had typed infinite and thought I erased it.. instead it inserted it next to it.
I think I'm going to re-visit adding capacitance to those fuel gauges again. I got one out today and that's as far as I got.
Roger, I've never tested it and looking at the schematic on the module I would say what ever input it takes to get the input voltage to approx. 3.4 volts. The issue with testing is that you have to wait for it to light up... but I've never really worried about that. There are two criteria to be reached, 1 it has to be below the limit threshold and 2 it has to stay there. This is why it won't flash on and off when the tank sloshes. The grounding simulates and empty tank or zero ohms. Initially I had typed infinite and thought I erased it.. instead it inserted it next to it.
I think I'm going to re-visit adding capacitance to those fuel gauges again. I got one out today and that's as far as I got.
Last edited by Willcox Corvette; 08-18-2011 at 04:48 PM.
08-18-2011, 06:35 PM
#7
Race Director
I got one out and hooked the pos up and neg and then on the 3rd contact I used a 150 pot turned up to 150,the light lit after 10 seconds. WTF ?
I would have thought the ohms would have been down under 10 ohms or all the way down to 0 to light it up.
The tank sender is 90,what am I missing ?
If you let me in on the secret I won't ever bust your ***** ever again.
Damn , I think my nose just grew a full inch.
I would have thought the ohms would have been down under 10 ohms or all the way down to 0 to light it up.
The tank sender is 90,what am I missing ?
If you let me in on the secret I won't ever bust your ***** ever again.
Damn , I think my nose just grew a full inch.
08-18-2011, 06:46 PM
#8
Melting Slicks
[QUOTE=Willcox Corvette;1578447545]I'm getting my ***** busted again by Roger... I'm never drinking again at midnight.
No BS there, he was smashed at near midnight...lol
No BS there, he was smashed at near midnight...lol
08-18-2011, 08:55 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
The secret is right in front of your nose Roger.. your ever expanding one...
run the wires through your head.... combine that with what I posted above (and not the ball busting part) and you'll figure i it out... ha ha ha ha..
This is going to be fun now... "its on"...
run the wires through your head.... combine that with what I posted above (and not the ball busting part) and you'll figure i it out... ha ha ha ha..
This is going to be fun now... "its on"...
08-18-2011, 10:46 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Ok Pinocchio .. Think of where the lower terminal goes.... not to the sender... but to the dash gauge.
08-19-2011, 01:21 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Just checking... figure it out yet?
08-19-2011, 02:53 PM
#13
Race Director
This is beyond my pay grade.
I see how the center terminal goes to the sender term on the gauge but I don't really understand it.
I did notice the light started to glow around 7 ohms.
With the testing procedure it appears ANY grounding at all turns the light on but when attached to the gauge it is much more stable.
Jumping away from the low fuel,I also noticed on these gauges the resistor goes from the pos post to the sender post , on the earlier gauges the resistor is between ground and the neg term of the gauge.Right ?
I see how the center terminal goes to the sender term on the gauge but I don't really understand it.
I did notice the light started to glow around 7 ohms.
With the testing procedure it appears ANY grounding at all turns the light on but when attached to the gauge it is much more stable.
Jumping away from the low fuel,I also noticed on these gauges the resistor goes from the pos post to the sender post , on the earlier gauges the resistor is between ground and the neg term of the gauge.Right ?
08-19-2011, 05:22 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
This is beyond my pay grade.
I see how the center terminal goes to the sender term on the gauge but I don't really understand it.
I did notice the light started to glow around 7 ohms.
With the testing procedure it appears ANY grounding at all turns the light on but when attached to the gauge it is much more stable.
Jumping away from the low fuel,I also noticed on these gauges the resistor goes from the pos post to the sender post , on the earlier gauges the resistor is between ground and the neg term of the gauge.Right ?
I see how the center terminal goes to the sender term on the gauge but I don't really understand it.
I did notice the light started to glow around 7 ohms.
With the testing procedure it appears ANY grounding at all turns the light on but when attached to the gauge it is much more stable.
Jumping away from the low fuel,I also noticed on these gauges the resistor goes from the pos post to the sender post , on the earlier gauges the resistor is between ground and the neg term of the gauge.Right ?
"what ever input it takes to get the input voltage to approx. 3.4 volts."
Last edited by Willcox Corvette; 08-19-2011 at 05:27 PM.
08-20-2011, 10:44 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
08-20-2011, 11:25 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Yeppers.. I tried to call you yesterday but n/a.... So to establish the resistance you'll need to wire your pot in through the voltage and remember.. you have a 90 ohm resistor between the ohms wire and the positive on the back of the gauge. Then test to see what ohms kicks it to on. The issue is the built in cap that keeps the thing from lighting up instantly.. (tank sway).
I should be close at 3.4 but I've never tested it.... Really never had a reason to but on the other hand I've never really had a reason to do a lot of things I've done... If your up to it go for it.. if not maybe I'll wire one up next week.
I should be close at 3.4 but I've never tested it.... Really never had a reason to but on the other hand I've never really had a reason to do a lot of things I've done... If your up to it go for it.. if not maybe I'll wire one up next week.
08-20-2011, 11:48 PM
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I'm hoping.. I may be wrong on this Roger... I just did it in my head on the fly off the schematic.
Last edited by Willcox Corvette; 08-21-2011 at 09:02 AM.
08-21-2011, 09:09 AM
#20
Race Director
I'll play some today (ive been working on the vacuum pistons) and set it up and see if I can figure it out. This really is getting outside my understanding of electronics,I do OK with pos , neg and an ohms reading thrown in but once the circuit gets more complicated than that I call 1-812-288-7103