What next?
1982 corvette c3
Race Director
Joined: Apr 2009
Posts: 19,294
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From: Charlotte NC
Electric motors... such as a fuel pump motor REALLY need all the voltage they can get and if the voltage drops too much...the efficiency of the pump greatly reduces. IF the voltage is less than battery voltage at the connector that plugs into your sending unit...that is telling me that you have a dirty connector somewhere....and the fact that because you applied 12 volts from your battery charger to make the fuel pump run does not matter...that is telling me that the pump is bad...or has a dead spot on it and the minute you tap it ( much like a power window motor) it works again...or it is the connector on the fuel side of the sending unit is bad.
Also...not wanting to be a smart@ss...the light bulb on your coffee table lamp two days ago also worked.... but when you went to turn it on today... the filament burnt out in it. Sometimes things can burn out that fast on some components. And that is coming from a guy who deals with 'stuff' going bad right while the Corvette is in my shop is having something else repaired. It makes no sense...but it happens.
DUB
Race Director
Joined: Apr 2009
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From: Charlotte NC
'pauilep103'
IF your problem still persists....let me know if you want more help...if looking at otehr threadas and teh iunternet give ioyu nothing.
I looked at the 1982 shop manual today and as like has been previously mentioned..there is a way to get the electric fuel pump to run and by-pass the factory circuits if needed.
You are aware that there is a FUEL PUMP fuse a the very top of your fuse panel. There are 2 fuses at the very top and the top right one is your fuel pump fuse and it is 10 amp.
DUB
IF your problem still persists....let me know if you want more help...if looking at otehr threadas and teh iunternet give ioyu nothing.
I looked at the 1982 shop manual today and as like has been previously mentioned..there is a way to get the electric fuel pump to run and by-pass the factory circuits if needed.
You are aware that there is a FUEL PUMP fuse a the very top of your fuse panel. There are 2 fuses at the very top and the top right one is your fuel pump fuse and it is 10 amp.
DUB
Melting Slicks
Joined: Feb 2017
Posts: 3,232
Likes: 1,232
From: PHX AZ
Guys...I'm an Engineer...I need you guys (those who are having problems) to seriously look at the GROUND CIRCUITS to (say) the fuel pump and relays et al.
EVERYBODY gets so concerned about how many volts on the FEED LINE. Okay, rightly so...like DUB says " you really should have about 12V going to the FP and or Relays or both."
HOWEVER...you are checking with a meter...EVEN if it says 12V DOES NOT MEAN THAT NEGATIVE! 12V is routing back to chassis ground nor the battery. {Its routing back through your meter}
SO...if you are checking ANY system on a Vette, who's body is NOT the ground, the chassis is...YOU MUST run a jumper wire from the NEGATIVE part of the circuit to KNOWN GOOD chassis ground or better yet, the neg term on the battery.
If it works THEN....BINGO....bad ground circuit.
Remember you can push 12Volts and .00001 amps and the meter will still read 12V! Volts is the size of the 'hose' amps is the flow rate through the hose.
Good luck Sirs! UnkaHal
EVERYBODY gets so concerned about how many volts on the FEED LINE. Okay, rightly so...like DUB says " you really should have about 12V going to the FP and or Relays or both."
HOWEVER...you are checking with a meter...EVEN if it says 12V DOES NOT MEAN THAT NEGATIVE! 12V is routing back to chassis ground nor the battery. {Its routing back through your meter}
SO...if you are checking ANY system on a Vette, who's body is NOT the ground, the chassis is...YOU MUST run a jumper wire from the NEGATIVE part of the circuit to KNOWN GOOD chassis ground or better yet, the neg term on the battery.
If it works THEN....BINGO....bad ground circuit.
Remember you can push 12Volts and .00001 amps and the meter will still read 12V! Volts is the size of the 'hose' amps is the flow rate through the hose.
Good luck Sirs! UnkaHal
Last edited by L-46man; Oct 3, 2017 at 06:55 PM.
Thread Starter
Intermediate
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Corvette
I haven’t had the chance to deal with this car I got stuck with a double and nothing got done I’ll keep you updated tomorrow sorry guys this car will be running by the weekend I’m off tomorrow and I’ll be on it
Thread Starter
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Joined: Sep 2017
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Checked out where cigarette lighter
I removed the cigarette lighter and there was the plug on the right side I’m getting power only their others are dead
[img]webkit-fake-url://d91184f6-119b-4f31-a177-92ce8cdcd6d4/imagejpeg[/img]
[img]webkit-fake-url://d91184f6-119b-4f31-a177-92ce8cdcd6d4/imagejpeg[/img]
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Melting Slicks
Joined: Nov 2005
Posts: 2,143
Likes: 488
From: Leonardtown Maryland
Also...not wanting to be a smart@ss...the light bulb on your coffee table lamp two days ago also worked.... but when you went to turn it on today... the filament burnt out in it. Sometimes things can burn out that fast on some components. And that is coming from a guy who deals with 'stuff' going bad right while the Corvette is in my shop is having something else repaired. It makes no sense...but it happens.
DUB
If THAT doesn't describe a 35 year old car on the cusp of modern technology nothing does. Now to get to work on it.
Melting Slicks
Joined: Nov 2005
Posts: 2,143
Likes: 488
From: Leonardtown Maryland
Here's to a 10 amp Fuel Pump fuse on the main fuse panel that lost all its anti-blow properties and caused my fuel pump to quit. Hopefully it is a fluke that occurred while troubleshooting my fuel sender/fuel gauge issue. I think I'll work on something else for a while.
Race Director
Joined: Apr 2009
Posts: 19,294
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From: Charlotte NC
I encounter problems in electrical issues from time to time where....a wire will have 12 volts.....it will ohm out perfectly so I know it is a continuous wire....BUT...18 out of the 19 strands of copper that make up that gauge of wire are broken...and when the component needs to power up and work...it commands so many amps that that single strand of copper can not allow the part to get the AMPS it needs.
YUP!.DUB
Last edited by DUB; Oct 4, 2017 at 06:56 PM.
Thread Starter
Intermediate
Joined: Sep 2017
Posts: 26
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Checked cigarette lighter
Checked out where cigarette lighter
I removed the cigarette lighter and there was the plug on the right side I’m getting power only their others are dead
[img]webkit-fake-url://d91184f6-119b-4f31-a177-92ce8cdcd6d4/imagejpeg[/img]
I removed the cigarette lighter and there was the plug on the right side I’m getting power only their others are dead
[img]webkit-fake-url://d91184f6-119b-4f31-a177-92ce8cdcd6d4/imagejpeg[/img]
Melting Slicks
Joined: Feb 2017
Posts: 3,232
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From: PHX AZ
Paulie...you can post a pick directly to the site....Corvette Forum is very civilized! LOL. Its the two left most pins on the ADL.
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Joined: Sep 2017
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Race Director
Joined: Apr 2009
Posts: 19,294
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From: Charlotte NC
Have you obtained a wiring diagram yet???
To post a photo..the way I do it is to save it in my computer....then...the yellow box that looks like a mountain inside of it right above where we type out our posts...in the task bar....'click' on it and a screen will come up....you have a choice of getting the photo from a URL or 'browse your device' and find it in your computer.
DUB
To post a photo..the way I do it is to save it in my computer....then...the yellow box that looks like a mountain inside of it right above where we type out our posts...in the task bar....'click' on it and a screen will come up....you have a choice of getting the photo from a URL or 'browse your device' and find it in your computer.
DUB
Thread Starter
Intermediate
Joined: Sep 2017
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Was dub finally got the car running !!!�� I did a temp fix ran a wire straight power to
The pump with a switch definetly have a
Broken wire somewhere I need a diagram for this car anyone knows where I can Download one from or can one be emailed to me paort2@aol.com thanks guys for patience and help
The pump with a switch definetly have a
Broken wire somewhere I need a diagram for this car anyone knows where I can Download one from or can one be emailed to me paort2@aol.com thanks guys for patience and help