no more engine braking/ trans slips when off gas
#1
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From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
no more engine braking/ trans slips when off gas
yea this is strange, this is my 5th adventure in crapin azz 700r4's but you know how you can gear down to slow down without hittin the brakes, well mine will not do that anymore, i rachet down and its like you are in neutral, if you tap the gas it will go up to the RPM the engine should be at the speed and go.... it does not slip between gears it perfect when you are on it or in 4th it will not drop RPMs when you let off 3 2 1 it goes down to idle as soon as you get out of it
it will still bark going into second firm as hell into 3 and 4 (its a built trans)
put it this way if you raw hyde it it loves you, if you baby it it hates you
it will still bark going into second firm as hell into 3 and 4 (its a built trans)
put it this way if you raw hyde it it loves you, if you baby it it hates you
#2
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From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: no more engine braking/ trans slips when off gas
#3
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From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: no more engine braking/ trans slips when off gas
so up shifting is fine but down shifting it slips? will it down shift itself when you stop?
#4
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From: Lowell, Michigan
Car: 1988 Trans Am, 2005 Sierra 2500
Engine: Vortec 357
Transmission: Built TH700R4 with 26-2800 Stall
Axle/Gears: GM 10 bolt 3.73 Posi
Re: no more engine braking/ trans slips when off gas
is your OD functioning ok? sounds like what happened to me when my torque converter went out in my grand am, let off the gas getting off the highway or coming up to a light and it would just go to idle. but i also noticed in my built 700r4 in my TA that if you rachet down at high speeds like from 3-2 it wont drop in until a certain speed becuase of hydralic pressure. Let us know what you find.
#5
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From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: no more engine braking/ trans slips when off gas
will it reverse up a hill? if not converter is toast.
#6
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iTrader: (2)
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From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: no more engine braking/ trans slips when off gas
havent tried to back up a hill yet
after the last rebuild, it would engine brake as soon as you let off
and yea it downshifts fine and does everything else fine, just has no grab when you let off in 3 2 1 ......
if you jump the treminals the converter will lock up manualy, but still the same when you let off the gas, just free roll
after the last rebuild, it would engine brake as soon as you let off
and yea it downshifts fine and does everything else fine, just has no grab when you let off in 3 2 1 ......
if you jump the treminals the converter will lock up manualy, but still the same when you let off the gas, just free roll
#7
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From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: no more engine braking/ trans slips when off gas
or you can power brake in reverse. reverse operates at much higher line pressure. if reverse starts to go, then the rest not far behind.
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#8
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iTrader: (2)
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From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: no more engine braking/ trans slips when off gas
so if it will not back up a hill its the converter, but if it will power brake in reverse its inside maybe im not paying good attention but im lost
#9
Thread Starter
Supreme Member
iTrader: (2)
Joined: Aug 2007
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From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: no more engine braking/ trans slips when off gas
it will power brake in rev, i got nice burnouts marks in my driveway now
and i will back up fine with no slipping even up a little incline
and i will back up fine with no slipping even up a little incline
#10
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From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: no more engine braking/ trans slips when off gas
the book says this:External linkage not adjusted properly.
valve body assembly:
*4-3 sequence valve stuck
*check ball mispositioned
*spacer plate and gaskets incorrect, damaged, or mispositioned.
Input clutch assembly:
*turbine shaft oil passages plugged or not drilled
*turbine shaft seal rings damaged
*turbine shaft sealing ***** loose ot missing
*porosity in forward or overran clutch piston
*overrun piston seals cut or damaged
*overrun piston check ball not sealed
valve body assembly:
*4-3 sequence valve stuck
*check ball mispositioned
*spacer plate and gaskets incorrect, damaged, or mispositioned.
Input clutch assembly:
*turbine shaft oil passages plugged or not drilled
*turbine shaft seal rings damaged
*turbine shaft sealing ***** loose ot missing
*porosity in forward or overran clutch piston
*overrun piston seals cut or damaged
*overrun piston check ball not sealed
#11
Thread Starter
Supreme Member
iTrader: (2)
Joined: Aug 2007
Posts: 2,529
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From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: no more engine braking/ trans slips when off gas
the book says this:External linkage not adjusted properly.
valve body assembly:
*4-3 sequence valve stuck
*check ball mispositioned
*spacer plate and gaskets incorrect, damaged, or mispositioned.
Input clutch assembly:
*turbine shaft oil passages plugged or not drilled
*turbine shaft seal rings damaged
*turbine shaft sealing ***** loose ot missing
*porosity in forward or overran clutch piston
*overrun piston seals cut or damaged
*overrun piston check ball not sealed
valve body assembly:
*4-3 sequence valve stuck
*check ball mispositioned
*spacer plate and gaskets incorrect, damaged, or mispositioned.
Input clutch assembly:
*turbine shaft oil passages plugged or not drilled
*turbine shaft seal rings damaged
*turbine shaft sealing ***** loose ot missing
*porosity in forward or overran clutch piston
*overrun piston seals cut or damaged
*overrun piston check ball not sealed
#12
Supreme Member
iTrader: (2)
Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: no more engine braking/ trans slips when off gas
your b&m shifter could have caused the problem
#14
Supreme Member
iTrader: (2)
Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: no more engine braking/ trans slips when off gas
if the shifter is not adjusted properly or has the wrong linkage.
#15
Thread Starter
Supreme Member
iTrader: (2)
Joined: Aug 2007
Posts: 2,529
Likes: 1
From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: no more engine braking/ trans slips when off gas
oh well i know its adjusted properly, it took forever but i got it set right
#16
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Joined: Jul 2008
Posts: 204
Likes: 1
From: Fox Lake, Illinois
Car: 1991 RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 3.08 lt. slip
Re: no more engine braking/ trans slips when off gas
My last 91 did the same thing......I drove it for another 100,000 miles with out any problems.
#17
Re: no more engine braking/ trans slips when off gas
With no engine braking in 1, 2, or 3 positions, it is the overrun assembly that is the problem. The transmission will have to be taken apart to solve this. It will be obvious when it is down. It will either be the clutches, sprag, broken hub, etc. in the overrun assembly.
#18
Thread Starter
Supreme Member
iTrader: (2)
Joined: Aug 2007
Posts: 2,529
Likes: 1
From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: no more engine braking/ trans slips when off gas
With no engine braking in 1, 2, or 3 positions, it is the overrun assembly that is the problem. The transmission will have to be taken apart to solve this. It will be obvious when it is down. It will either be the clutches, sprag, broken hub, etc. in the overrun assembly.
what would cause this the break???
#19
Re: no more engine braking/ trans slips when off gas
It could be one of hese. The clutches are burnt (not holding). The sprag is not holding due to wear or it has flipped over (destroyed). The overrun hub is broken (fractured).
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