rough shifting (automatic)
Thread Starter
Junior Member
Joined: Sep 2003
Posts: 38
Likes: 0
From: Oregon, USA
Car: 1986 Firebird
Engine: 2.8L MPFI (LB8)
Transmission: 700R4
rough shifting (automatic)
'86 Firebird
I wondered if someone could tell me what might cause my car to jerk/jolt some when I shift (auto transmission).
There's no jerk when I shift from overdrive to neutral OR reverse to neutral. But between forward gears and shifting out of park causes a bit of a jerk.
Oh. And I'm talking about experiencing the jolt while stopped.
Had U-Joints checked a couple times. That's all.
Thanks. From someone with no transmission knowledge.
J_
I wondered if someone could tell me what might cause my car to jerk/jolt some when I shift (auto transmission).
There's no jerk when I shift from overdrive to neutral OR reverse to neutral. But between forward gears and shifting out of park causes a bit of a jerk.
Oh. And I'm talking about experiencing the jolt while stopped.
Had U-Joints checked a couple times. That's all.
Thanks. From someone with no transmission knowledge.
J_
Last edited by JUnderscore; Oct 26, 2003 at 10:36 PM.
Supreme Member
Joined: Jul 1999
Posts: 3,479
Likes: 54
From: Calimesa, California, U.S.
If you are talking about the park/neutral to any forward gear engagement?, then it is because there is not an accumulator. In 1987 they introduced this. A low idle helps here, or a higher stall torque converter helps.
Junior Member
Joined: Aug 2003
Posts: 29
Likes: 0
From: Las Vegas
Car: 86 TA
Engine: 383 Stroker
Transmission: 700R4
atten:Probuilt
Originally posted by Pro Built Automatics
then it is because there is not an accumulator. In 1987 they introduced this. A low idle helps here, or a higher stall torque converter helps.
then it is because there is not an accumulator. In 1987 they introduced this. A low idle helps here, or a higher stall torque converter helps.
Thread Starter
Junior Member
Joined: Sep 2003
Posts: 38
Likes: 0
From: Oregon, USA
Car: 1986 Firebird
Engine: 2.8L MPFI (LB8)
Transmission: 700R4
Well, this is not something that my car has always done. That's why I wondered if there was something out of adjustment.
After I posted initially, I read that it could be from the tranny fluid being cold. Anyone agree?
No tachometer in my 'Bird.
J_
----
After I posted initially, I read that it could be from the tranny fluid being cold. Anyone agree?
No tachometer in my 'Bird.
J_
----
Originally posted by Badazz86z28
Is he talking about the When you shift out of park when the RPMS drop to 400 and then surge back up?
Is he talking about the When you shift out of park when the RPMS drop to 400 and then surge back up?
Junior Member
Joined: Aug 2002
Posts: 24
Likes: 0
From: Morganton, NC
I have a 92 R/S that is doing the same thing. When I shift it from park to drive it has about a 2-3 second delay then clunks into gear. This is the only problem with this tranny, and it is the original tranny. Accumulator? How to fix it? Thanks.
Originally posted by Pro Built Automatics
If you are talking about the park/neutral to any forward gear engagement?, then it is because there is not an accumulator. In 1987 they introduced this. A low idle helps here, or a higher stall torque converter helps.
If you are talking about the park/neutral to any forward gear engagement?, then it is because there is not an accumulator. In 1987 they introduced this. A low idle helps here, or a higher stall torque converter helps.
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Member
Joined: Mar 2003
Posts: 278
Likes: 0
From: Charlotte, NC
Car: 88/Form 86/Z28 87 Trans
Engine: 305 TBI 305 Carb 350 TPI
Transmission: 700r4 x3
Found out what it is
One the trannys cold takes a sec to Pressurize and two i pluged my EGR and it stoped doing it
One the trannys cold takes a sec to Pressurize and two i pluged my EGR and it stoped doing it
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