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Author
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Topic: detaching speedo cable from instrument cluster on '77
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Sisyphus
Journeyman Posts:
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posted 05-28-2006 04:22 PM
 
I have a 77 t-bird with only 49k miles, it's been garage kept, it looks great but the gas guage doesn't work, neither does anything else in that entire cluser -- the left turn indicator is in that cluster and it does work -- but I figure that's separate somehow. I tried to take the instrument cluster out, but even with the screws out the speedo cable holds everything in pretty tight all alone. I can touch it (barely) but I can't see, can't figure out what holds it on. Help please! s
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SteveLaRiviere
Administrator Posts: 48752
From: Saco, Maine
Registered: May 99
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posted 05-29-2006 07:43 PM
Where the speedometer cable meets the speedometer head there is a white plastic collar. As you squeeze it at the tabs, two dogs that ride in grooves in the speedometer head will release, freeing the cable.Welcome to M&M. But before you take that apart, have you check the gas tank sending unit? They are the cause of gas gauge failures about 95% of the time. ------------------
'70 Mustang Mach 1 - '70 Mustang Convertible - '72 Mustang Sprint - '94 F-150 XL
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Sisyphus
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posted 05-29-2006 08:36 PM
No, I haven't but... (famous last words right:) considering the whole cluser is out, back lights, alt light, everything in that far left circle but the left turn indicator light, I thought I would start at the top.It is so much easier, I probably should do that. At least I would know. Thanks much.
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Sisyphus
Journeyman Posts:
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posted 06-04-2006 03:46 PM
I never was able to get that plastic tab to release. I unhooked the speedo cable from the clamp underneath and pushed enough slack through to access the back of the instrument cluster.While I was underneath I checked the gas tank sending unit -- as everyone said, that was the cause of the gas guage failure -- but I also had severl lights out in the back of the instrument cluster so taking the dash apart wasn't a waste of time. I unplugged them and plugged them back in and all but one started working -- old cars -- go figure:) Auto parts says a gas tank sending unit is $185.o0. That amount is out of the question. If I had the GTS unit in my hand, is there any chance I could fix it? And, if there is, whats the proper procedure for getting the gas out of the tank? There may be as much as 20 gals in there. With no guage, filling it up is the only way to be sure there is gas and it's a 25 gal tank, so there's a least a bunch in there.
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