I've seen that many times. The bladder bulges out just enough to keep the float from moving. Bending the float arm out just a skosh to clear the bladder bulge may be the solution
New member from Ohio with C3 issues
Thread Starter
Heel & Toe
Joined: Jul 2007
Posts: 15
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New member from Ohio with C3 issues
Hi: I'm a new forum member from Ohio looking for some assistance with 3 issues I have with my C3 82 Collectors Edition.
(1)My ac/heater control unit in the consol has no illumination. The owners manual shows a bulb #553. I have a full assembly manual on the car which doesn't show any bulb. I have looked over the unit and can't find a bulb or socket
(2)I have owned this car for 3 years and the fuel gauge didn't indicate below 3/4 full no matter how low the tank was. I was waiting till the fuel pump would give me trouble before replacing the complete assembly, fuel pump and sending unit, thinking the sending unit was the problem. I have just replaced the whole unit because the pump failed. The pump works great but now the fuel guage doesn't move above empty no matter how full the tank is. I have found that there is no power going to the sender wire. Would the fuel gauge or printed circuit board be bad or something else?
(3) The remote side view mirrors are not operating. They were at one time. I believe it might be the toggle switch. If any member agrees, where may I obtain a replacement?
Help!!!! I look forward to your response.
(1)My ac/heater control unit in the consol has no illumination. The owners manual shows a bulb #553. I have a full assembly manual on the car which doesn't show any bulb. I have looked over the unit and can't find a bulb or socket
(2)I have owned this car for 3 years and the fuel gauge didn't indicate below 3/4 full no matter how low the tank was. I was waiting till the fuel pump would give me trouble before replacing the complete assembly, fuel pump and sending unit, thinking the sending unit was the problem. I have just replaced the whole unit because the pump failed. The pump works great but now the fuel guage doesn't move above empty no matter how full the tank is. I have found that there is no power going to the sender wire. Would the fuel gauge or printed circuit board be bad or something else?
(3) The remote side view mirrors are not operating. They were at one time. I believe it might be the toggle switch. If any member agrees, where may I obtain a replacement?
Help!!!! I look forward to your response.
Safety Car
Joined: Aug 2000
Posts: 3,943
Likes: 44
From: Florham Park NJ Port Credit Ontario
Where in Ohio? You neglected to complete the member profile.
Fuel Guage issue. Sounds to me that you have a bad ground on the sending unit.
Any of the Vette vendors on this site will have a replacement mirror switch.
Fuel Guage issue. Sounds to me that you have a bad ground on the sending unit.
Any of the Vette vendors on this site will have a replacement mirror switch.
Pro
Joined: Oct 2006
Posts: 564
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From: London
(1)My ac/heater control unit in the consol has no illumination. The owners manual shows a bulb #553. I have a full assembly manual on the car which doesn't show any bulb. I have looked over the unit and can't find a bulb or socket
There is no bulb fitted as such.
But if you look between the a/c vents on top of them is a fisheye light which shines down and illuminates the ac/heater control
There is no bulb fitted as such.
But if you look between the a/c vents on top of them is a fisheye light which shines down and illuminates the ac/heater control
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
I thought the bulb was a 558 but any way its in the upper dash and shines down on the AC control.The bulb has a little lens on it to focus the light beam.Be very careul when you replace it-when you tilt the center cluster forward the bulb socket will try to tear the upper dash.
Fuel gauge-bad tank units were common-but first test your wiring and dash unit---turn ignition key to ON and remove wire at tank sending unit and the needle on dash gauge should read past full--ground the sender wire and it should go past empty--If this happens then its probably the unit in the tank but check the tank unit ground as said above.
On the mirrrors check the radio fuse and then move to the brown w white tracer wire at the switch and check for 12 volts.
Fuel gauge-bad tank units were common-but first test your wiring and dash unit---turn ignition key to ON and remove wire at tank sending unit and the needle on dash gauge should read past full--ground the sender wire and it should go past empty--If this happens then its probably the unit in the tank but check the tank unit ground as said above.
On the mirrrors check the radio fuse and then move to the brown w white tracer wire at the switch and check for 12 volts.
Thread Starter
Heel & Toe
Joined: Jul 2007
Posts: 15
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Thanks for your input. I believe the bulb location you indicate is the one that illuminates the gauge cluster and that is working. I can't see how that light would get past the radio which is below it.
George
Forget all the above. I found the bulb location just as you described. THANKS,THANKS,THANKS
George
Forget all the above. I found the bulb location just as you described. THANKS,THANKS,THANKS
Last edited by wallings007; Jul 5, 2007 at 11:53 PM.
Instructor
Joined: Oct 2006
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From: Jupiter FL
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Thread Starter
Heel & Toe
Joined: Jul 2007
Posts: 15
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Thanks for your suggestions. I did remove the wire at the pump/sending unit and the fuel guage goes past full. When connected the gauge goes to empty just like you say. The unit is new. I purchased it from Corvette Central. I will check the ground and also check 12 volt power to remote mirrow switch
George
George
Race Director
Joined: May 2006
Posts: 16,528
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From: Dayton, Ohio
The 82 has a hard plastic liner not rubber.I guess the liner could bulge but I have never run into it-plus with gas pushing outward I dont know what would cause it to push away from the metal unless there is gas behind it.Hmmmm Interesting
Thread Starter
Heel & Toe
Joined: Jul 2007
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I'm not familiar with what a bladder is in relation to the tank. Is it part of the pump/sending unit? The wire to the sending unit is tan with white stripe and I'm not getting any current to it but am getting current to the pump which is a pink wire. The ground is connected directly to the unit.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
I'm not familiar with what a bladder is in relation to the tank. Is it part of the pump/sending unit? The wire to the sending unit is tan with white stripe and I'm not getting any current to it but am getting current to the pump which is a pink wire. The ground is connected directly to the unit.
Thread Starter
Heel & Toe
Joined: Jul 2007
Posts: 15
Likes: 0
Hi DWncchs:
My mistake. The bulb is a 558 which I have purchased. Regarding my fuel guage problem, I did as you suggested. I disconnected the sender wire and the needle went past full. When I grounded the wire the needle didn't move at all off the past full mark which means I have a ground problem with this wire. Do you have any suggestions where I should start to correct this. This is the only remaining electrical problem I have with the car. I have a full wiring diagram on the car but it's a little difficult to follow. Any tips would be appreciated. George
My mistake. The bulb is a 558 which I have purchased. Regarding my fuel guage problem, I did as you suggested. I disconnected the sender wire and the needle went past full. When I grounded the wire the needle didn't move at all off the past full mark which means I have a ground problem with this wire. Do you have any suggestions where I should start to correct this. This is the only remaining electrical problem I have with the car. I have a full wiring diagram on the car but it's a little difficult to follow. Any tips would be appreciated. George
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Hi DWncchs:
My mistake. The bulb is a 558 which I have purchased. Regarding my fuel guage problem, I did as you suggested. I disconnected the sender wire and the needle went past full. When I grounded the wire the needle didn't move at all off the past full mark which means I have a ground problem with this wire. Do you have any suggestions where I should start to correct this. This is the only remaining electrical problem I have with the car. I have a full wiring diagram on the car but it's a little difficult to follow. Any tips would be appreciated. George
My mistake. The bulb is a 558 which I have purchased. Regarding my fuel guage problem, I did as you suggested. I disconnected the sender wire and the needle went past full. When I grounded the wire the needle didn't move at all off the past full mark which means I have a ground problem with this wire. Do you have any suggestions where I should start to correct this. This is the only remaining electrical problem I have with the car. I have a full wiring diagram on the car but it's a little difficult to follow. Any tips would be appreciated. George