Transmissions and Drivetrain Need help with your trans? Problems with your axle?

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Old Jun 28, 2004 | 08:44 PM
  #1  
1-MEAN-T/A's Avatar
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Joined: Dec 2003
Posts: 183
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From: Long Island and New Jersey
Car: 1986 Trans Am
Engine: V8 305 LB9 5.0 T.P.I
Transmission: THM 700 R4 Auto
New problem

Ok guys please give me good news even though i know there isnt.I have a 86 t/a with an automatic trans. All of a sudden i have no acceleration. I press the gas, the engine goes but my car seems to feel like its eing held back. the car moves but not quickly at all. As i said above this just started. Also when i shift i hear clanking under the car especially when i shift into drive..Please any help would be appreciated....
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Old Jun 28, 2004 | 09:57 PM
  #2  
SweetS10v8's Avatar
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Joined: Jul 2003
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From: Lima, OH
Car: '89 Formula 350 & '86 Z28
Engine: L98 & 355ci
Transmission: 700r4 in both
How old is your trans? Is it full of fluid? Could be a bad clutch.

Or could be your stater is free wheeling, the one way roller could be bad. Symptoms are engine revs, but car is slow to accelerate.

How does it do when you get it up to speed 55+????
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Old Jun 28, 2004 | 10:27 PM
  #3  
3GTAs1TA1Z28's Avatar
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Joined: Feb 2004
Posts: 510
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From: Phoenix, AZ
Car: 85 87 87 91 92
Engine: 305 TPI 350 TPI 350 Carb
Transmission: B/W T-5 and 700R4
Can you feel the clank or is it more a thump and next time you go the shift into drive put your hand on the hump right behind the center console the put it in drive and see if you can feel the sound if you can its time to replace either your tranny mount or your torque arm mount / bushing....If its your torque arm that would take from your pickup speed because its changing the angle of the driveline and rearend versus holding it straight and stiff

Hope That helps with your problem

Last edited by 3GTAs1TA1Z28; Jun 28, 2004 at 10:35 PM.
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Old Jul 6, 2004 | 08:48 AM
  #4  
1-MEAN-T/A's Avatar
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Joined: Dec 2003
Posts: 183
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From: Long Island and New Jersey
Car: 1986 Trans Am
Engine: V8 305 LB9 5.0 T.P.I
Transmission: THM 700 R4 Auto
Alright, i went to a transmission guy by me..Very respectable. Anyway, he checked it all out, put it through its gears on the backroads and he said the tranny felt fine. I dont think he felt what i am..a loss of power. It feels like the car is being held back.Th clnking is the mounts, i need motor and tranny mounts..
So any ideas??I just got tune up w/ sparkplugs too...


-Adam
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