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Front Pump Seal Leak, Can I Tell If The Pump Is Bad

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Old Jul 20, 2009 | 06:48 PM
  #1  
novafirebirdguy's Avatar
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Joined: Mar 2009
Posts: 503
Likes: 1
From: Des Moines, IA
Car: 90 Formula WS6, 86 Sport Coupe
Engine: 305 TBI, 2.8 MPFI
Transmission: 700r4, 700r4w/vette servos
Axle/Gears: 2.73 Open, 3.42 Open
Front Pump Seal Leak, Can I Tell If The Pump Is Bad

Hi guys,
My front pump seal leaks about a grapefruit sized puddle over night. I'm fairly sure it's the front pump seal as the car has 172k. My mechanic will change the seal for $100, but he says the front pump will probably be bad as well, and it'll have to go to a transmission shop for that. Is there anyway for me to tell if the pump is bad with the transmission in place? I'm confident my mechanic won't just slap a seal on and say it's fixed, but he's not available til next Tuesday so I'd kinda like to know how much cash I'll be set back now. The car drives fine, although it might have slipped once when I floored it (before I new the seal was bad), but it might have been wheel hop. BTW, how much is an average price for getting the front pump rebuilt, and if it's bad should I get the whole thing rebuilt? I've only got about $600, so I'm on a tightish budget.

Alex
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Old Jul 27, 2009 | 12:13 PM
  #2  
regal301's Avatar
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Joined: Sep 2007
Posts: 449
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From: RHODE ISLAND
Car: 1988 iroc-z
Engine: 350 Vortec TPI
Transmission: 700r4
Axle/Gears: 3.73 4th gen Torsen 10bolt
Re: Front Pump Seal Leak, Can I Tell If The Pump Is Bad

with that mileage your best bet is to pick up a used transmission with low mileage,around my area they go for $250 with about 85k on them.i just went through that on my caprice.took a shot with a seal and had to pull it again and put in a trans.it had 192k.
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Old Jul 27, 2009 | 04:16 PM
  #3  
baktrak09's Avatar
Junior Member
15 Year Member
 
Joined: Feb 2007
Posts: 26
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From: indianapolis,In
Car: 86 camaro, 99 cavalier, 85 s10
Engine: 350
Transmission: 700
Re: Front Pump Seal Leak, Can I Tell If The Pump Is Bad

I can get rebuilt 700r4's for $500-600 around here, but not everything in them is new.
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Old Jul 27, 2009 | 05:52 PM
  #4  
regal301's Avatar
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Joined: Sep 2007
Posts: 449
Likes: 0
From: RHODE ISLAND
Car: 1988 iroc-z
Engine: 350 Vortec TPI
Transmission: 700r4
Axle/Gears: 3.73 4th gen Torsen 10bolt
Re: Front Pump Seal Leak, Can I Tell If The Pump Is Bad

a lot of thiefs around here, 700r4's rebuilt around here are 600-900.
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