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fuel guage
Would anyone happen to know how to check or determine if the problem with
fuel gauge is the gauge or the wiring? test procedures? wiring schematics? I changed out the gauge and is still inoperable. Thank you a Great deal!! Tim |
fuel guage
Maybe a resistance chart or table or spec?
"Jeepinit" wrote in message ... Would anyone happen to know how to check or determine if the problem with fuel gauge is the gauge or the wiring? test procedures? wiring schematics? I changed out the gauge and is still inoperable. Thank you a Great deal!! Tim |
fuel guage
On Fri, 15 Aug 2008 09:07:28 -0400, "Jeepinit"
wrote: Would anyone happen to know how to check or determine if the problem with fuel gauge is the gauge or the wiring? test procedures? wiring schematics? I changed out the gauge and is still inoperable. Thank you a Great deal!! Tim If you can get to the tank's sending unit, move the ground wire and see if the gauge operates. My ground wire rivet came loose on the sending unit. Couldn't see an easy way of making it secure, so replaced the sending unit. West Marine carries them. -- ** Good Day! ** John H |
fuel guage
Yes access to the sending unit is easy. I ran a direct jumper to the unit
from the gauge with no improvements. Any Ideas? "John H." wrote in message ... On Fri, 15 Aug 2008 09:07:28 -0400, "Jeepinit" wrote: Would anyone happen to know how to check or determine if the problem with fuel gauge is the gauge or the wiring? test procedures? wiring schematics? I changed out the gauge and is still inoperable. Thank you a Great deal!! Tim If you can get to the tank's sending unit, move the ground wire and see if the gauge operates. My ground wire rivet came loose on the sending unit. Couldn't see an easy way of making it secure, so replaced the sending unit. West Marine carries them. -- ** Good Day! ** John H |
fuel guage
"Jeepinit" wrote in message
... Yes access to the sending unit is easy. I ran a direct jumper to the unit from the gauge with no improvements. Any Ideas? "John H." wrote in message ... On Fri, 15 Aug 2008 09:07:28 -0400, "Jeepinit" wrote: Would anyone happen to know how to check or determine if the problem with fuel gauge is the gauge or the wiring? test procedures? wiring schematics? I changed out the gauge and is still inoperable. Thank you a Great deal!! Tim If you can get to the tank's sending unit, move the ground wire and see if the gauge operates. My ground wire rivet came loose on the sending unit. Couldn't see an easy way of making it secure, so replaced the sending unit. West Marine carries them. -- ** Good Day! ** John H The sending unit must be grounded and the guage must be getting 12 volts on the + terminal. That's what completes the circuit. The sending unit resistance will vary from a dozen or so ohms to a couple hundred ohms depending on how much gas is in the tank. You can momentarily short the wire between the guage and the sending unit to ground and see if the gauge jumps but don;t hold it on ground as usually there is a little resistance from the sending unit. Helps a lot if you have a multi-meter. |
fuel guage
On Fri, 15 Aug 2008 11:25:44 -0400, "Jeepinit"
wrote: Yes access to the sending unit is easy. I ran a direct jumper to the unit from the gauge with no improvements. Any Ideas? If you put a voltmeter across the sending unit do you get a reading? The sender is basically a variable resistor so there should be some voltage there unless the wiring is open some place else. |
fuel guage
"Wayne.B" wrote in message ... On Fri, 15 Aug 2008 11:25:44 -0400, "Jeepinit" wrote: Yes access to the sending unit is easy. I ran a direct jumper to the unit from the gauge with no improvements. Any Ideas? If you put a voltmeter across the sending unit do you get a reading? The sender is basically a variable resistor so there should be some voltage there unless the wiring is open some place else. Hook a ground wire to the engine and briefly touch the other end to the wire that you just ran to the sender. The gauge should jump to full. Ignition switch on obviously. If that works your problem is the sender or the tank ground is bad. |
fuel guage
On Fri, 15 Aug 2008 14:56:01 -0400, Wayne.B
wrote: On Fri, 15 Aug 2008 11:25:44 -0400, "Jeepinit" wrote: Yes access to the sending unit is easy. I ran a direct jumper to the unit from the gauge with no improvements. Any Ideas? If you put a voltmeter across the sending unit do you get a reading? The sender is basically a variable resistor so there should be some voltage there unless the wiring is open some place else. How about putting an Ohm meter across the terminals. Tells you if it is either open or shorted. Casady |
fuel guage
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fuel guage
On Fri, 15 Aug 2008 20:54:53 -0400, Wayne.B
wrote: On Fri, 15 Aug 2008 19:54:11 GMT, (Richard Casady) wrote: How about putting an Ohm meter across the terminals. Tells you if it is either open or shorted. That's OK if you disconnect the wiring first, otherwise you will crispy fry your ohmmeter. You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady |
fuel guage
"Richard Casady" wrote in message ... On Fri, 15 Aug 2008 20:54:53 -0400, Wayne.B wrote: On Fri, 15 Aug 2008 19:54:11 GMT, (Richard Casady) wrote: How about putting an Ohm meter across the terminals. Tells you if it is either open or shorted. That's OK if you disconnect the wiring first, otherwise you will crispy fry your ohmmeter. You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady Fluke makes good meters. I still manage to blow them up though. My favorite is still my Simpson 260 that somehow was mistakenly packed in my personal stuff when I left the Navy. Still works fine, 31 years later. Eisboch |
fuel guage
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fuel guage
On Fri, 15 Aug 2008 21:32:03 -0400, Wayne.B
wrote: On Sat, 16 Aug 2008 01:24:42 GMT, (Richard Casady) wrote: You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady Interesting, didn't know that. Most of us don't own Flukes however. Traditional analog VOMs will let the magic smoke out of the wires if you do that. Simpson 260 - best VOM EVAH!!! |
fuel guage
On Fri, 15 Aug 2008 21:29:43 -0400, "Eisboch" wrote:
"Richard Casady" wrote in message . .. On Fri, 15 Aug 2008 20:54:53 -0400, Wayne.B wrote: On Fri, 15 Aug 2008 19:54:11 GMT, (Richard Casady) wrote: How about putting an Ohm meter across the terminals. Tells you if it is either open or shorted. That's OK if you disconnect the wiring first, otherwise you will crispy fry your ohmmeter. You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady Fluke makes good meters. I still manage to blow them up though. My favorite is still my Simpson 260 that somehow was mistakenly packed in my personal stuff when I left the Navy. Still works fine, 31 years later. Got two of them. Best VOM EVAH... |
fuel guage
On Fri, 15 Aug 2008 22:02:20 -0400, Short Wave Sportfishing
wrote: On Fri, 15 Aug 2008 21:29:43 -0400, "Eisboch" wrote: "Richard Casady" wrote in message .. . On Fri, 15 Aug 2008 20:54:53 -0400, Wayne.B wrote: On Fri, 15 Aug 2008 19:54:11 GMT, (Richard Casady) wrote: How about putting an Ohm meter across the terminals. Tells you if it is either open or shorted. That's OK if you disconnect the wiring first, otherwise you will crispy fry your ohmmeter. You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady Fluke makes good meters. I still manage to blow them up though. My favorite is still my Simpson 260 that somehow was mistakenly packed in my personal stuff when I left the Navy. Still works fine, 31 years later. Got two of them. Best VOM EVAH... Oh, I might add I also had a Fluke - past tense. Didn't like it - sold it. Gimme good old analog meters anyday. |
fuel guage
Pfffttt... nuttin' beats an oscilloscope, if I had my druthers...;)
On Sat, 16 Aug 2008 02:01:36 GMT, Short Wave Sportfishing wrote: On Fri, 15 Aug 2008 21:32:03 -0400, Wayne.B wrote: On Sat, 16 Aug 2008 01:24:42 GMT, (Richard Casady) wrote: You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady Interesting, didn't know that. Most of us don't own Flukes however. Traditional analog VOMs will let the magic smoke out of the wires if you do that. Simpson 260 - best VOM EVAH!!! |
fuel guage
On Fri, 15 Aug 2008 22:13:54 -0400, RMR
wrote: Pfffttt... nuttin' beats an oscilloscope, if I had my druthers...;) True but a little unwieldy to carry around on the boat. |
fuel guage
On Aug 15, 10:29*pm, Wayne.B wrote:
On Fri, 15 Aug 2008 22:13:54 -0400, RMR wrote: Pfffttt... nuttin' beats an oscilloscope, if I had my druthers...;) True but a little unwieldy to carry around on the boat. Mabey a little boat like mine.. but yours? ;) |
fuel guage
On Fri, 15 Aug 2008 21:32:03 -0400, Wayne.B
wrote: On Sat, 16 Aug 2008 01:24:42 GMT, (Richard Casady) wrote: You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady Interesting, didn't know that. Most of us don't own Flukes however. Traditional analog VOMs will let the magic smoke out of the wires if you do that. I don't particularly like the shock resistance of analog meters. If you have been using an analog meter all your life and are used to it you don't really need the fancy new ones. Casady |
fuel guage
"Wayne.B" wrote in message
... On Fri, 15 Aug 2008 22:13:54 -0400, RMR wrote: Pfffttt... nuttin' beats an oscilloscope, if I had my druthers...;) True but a little unwieldy to carry around on the boat. Actually I've not had a reason to use mine on a boat but I have an old tektronix 305 portable that has rechargable batteries plus terminals to accept dc external power anywhere from 9v to 32v. And it's fairly small for a crt scope. All solid state except for the crt and fairly resistant to bumps and bangs. Tektronix always was my preference for scopes. |
fuel guage
On Aug 16, 9:47*am, "jamesgangnc" wrote:
"Wayne.B" wrote in message ... On Fri, 15 Aug 2008 22:13:54 -0400, RMR wrote: Pfffttt... nuttin' beats an oscilloscope, if I had my druthers...;) True but a little unwieldy to carry around on the boat. Actually I've not had a reason to use mine on a boat but I have an old tektronix 305 portable that has rechargable batteries plus terminals to accept dc external power anywhere from 9v to 32v. *And it's fairly small for a crt scope. *All solid state except for the crt and fairly resistant to bumps and bangs. *Tektronix always was my preference for scopes. Nothing is better for testing the input and output of transistors and the cpu of an engine... I used to be able to take a quick look at a spark plug patterns and tell you rich, lean, open, dead, etc. in a matter of seconds. Some of the guys would have me poke my leads around under the hood before they started working on certain runability problems... Saved them a lot of time.. The other thing I could really read well was the tail pipe gas tester.. Between those two inputs, I could really point someone in the right direction... |
fuel guage
"Short Wave Sportfishing" wrote in message ... On Fri, 15 Aug 2008 22:02:20 -0400, Short Wave Sportfishing wrote: On Fri, 15 Aug 2008 21:29:43 -0400, "Eisboch" wrote: "Richard Casady" wrote in message . .. On Fri, 15 Aug 2008 20:54:53 -0400, Wayne.B wrote: On Fri, 15 Aug 2008 19:54:11 GMT, (Richard Casady) wrote: How about putting an Ohm meter across the terminals. Tells you if it is either open or shorted. That's OK if you disconnect the wiring first, otherwise you will crispy fry your ohmmeter. You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady Fluke makes good meters. I still manage to blow them up though. My favorite is still my Simpson 260 that somehow was mistakenly packed in my personal stuff when I left the Navy. Still works fine, 31 years later. Got two of them. Best VOM EVAH... Oh, I might add I also had a Fluke - past tense. Didn't like it - sold it. Gimme good old analog meters anyday. Years ago while I was still in college and fixing mainframes to pay for college, the factory engineers came out to a Beta site we had in San Francisco area. Simpson meter is connected across the legs of a 208 3 phase line to see how much voltage was really there. They had the meter on milliamp scale and sounded like a 38 going off in the room. Magic smoke curling up from the meter. except for the milliamp scale, meter worked fine. Had blown apart the shunt resister was all. Good meter. My last simpson died a sad death. Battery leaked and the acid wiped out most of the internals. |
fuel guage
"Richard Casady" wrote in message ... On Fri, 15 Aug 2008 21:32:03 -0400, Wayne.B wrote: On Sat, 16 Aug 2008 01:24:42 GMT, (Richard Casady) wrote: You can plug my Fluke into a power outlet with it set to ohms without any damage. Casady Interesting, didn't know that. Most of us don't own Flukes however. Traditional analog VOMs will let the magic smoke out of the wires if you do that. I don't particularly like the shock resistance of analog meters. If you have been using an analog meter all your life and are used to it you don't really need the fancy new ones. Casady Was in a 99 cent store last year, and bought a nice little VOM for a buck. Even has the old plug the transister in holes for beta's etc. Small, fits in the boat toolbag nicely. |
fuel guage
On Mon, 18 Aug 2008 10:58:21 -0700, "Calif Bill"
wrote: Years ago while I was still in college and fixing mainframes to pay for college, the factory engineers came out to a Beta site we had in San Francisco area. Simpson meter is connected across the legs of a 208 3 phase line to see how much voltage was really there. They had the meter on milliamp scale and sounded like a 38 going off in the room. Magic smoke curling up from the meter. except for the milliamp scale, meter worked fine. Had blown apart the shunt resister was all. Good meter. My last simpson died a sad death. Battery leaked and the acid wiped out most of the internals. The Fluke has a 1 amp fuse for the milliamp scale, and a 10 amp one for the amp scale. Actually it is the lead car type batteries that have the acid. Dry cells have zinc chloride which is not an acid, but which is highly corrosive, as you noticed. Alkaline cells do not have acid, obviously. They have potassium hydroxide, and while they are not particularly prone to leakage, the stuff is also highly corrosive. Casady |
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