Shift points wrong
Shift points wrong
First of all, Chevy beretta 2.8 auto. I just got done changing the o ring on the oil pump drive and i had to remove the throttle body. Now the car wont shift until it hits around 5k and it stalls constantly. What have I done wrong?

1989 Beretta Base 2.8
- daguse5853z
- Registered User
- Posts: 268
- Joined: Sun Feb 12, 2006 7:35 pm
- Location: Central, PA
Re: Shift points wrong
I'm not familiar with the older automatics but I have this to offer. My 89 plymouth horizon had a linkage that ran from the throttle body to the trans and when that was unhooked the trans shifts points were all too high. Maybe you left a vacuum line unhooked?
- Money pit Beretta
- Registered User
- Posts: 6411
- Joined: Thu Jul 26, 2007 11:36 am
- Location: Kansas
Re: Shift points wrong
I cant shift it up or down. It just doesnt want to. I thought it could be the Throttle Valve but i could be wrong.

1989 Beretta Base 2.8
- berettaboi
- Registered User
- Posts: 973
- Joined: Sun Mar 23, 2008 10:58 pm
- Location: canananada
Re: Shift points wrong
you were right near all the linkage, and a bunch of vacuum lines, and the major electrical connector for the tranny, i would re check everything down there
4th one's a charm, 5th one is, beginnning to sound like this is an addiction...
95 black z26, '96 White z26 awaiting new life, and 2.5 mazda trucks

95 black z26, '96 White z26 awaiting new life, and 2.5 mazda trucks

Re: Shift points wrong
My guess is that the TV cable is in need of adjustment or came out of adjustment.
Sometimes, you can try slamming the pedal down to the floor really hard to unstick the throttle valves on the 700R4 RWD and 4WD transmissions. I had to do it 2 years ago when the weather got extremely cold, with my 83. It wouldn't shift out of 1st gear and was revving my poor diesel to hell LOL
Sometimes, you can try slamming the pedal down to the floor really hard to unstick the throttle valves on the 700R4 RWD and 4WD transmissions. I had to do it 2 years ago when the weather got extremely cold, with my 83. It wouldn't shift out of 1st gear and was revving my poor diesel to hell LOL
Re: Shift points wrong
I second the TV cable, and do it asap because you can trash a trans really fast if it is out of adjustment.
Re: Shift points wrong
I should have mentioned to my story that the stabbing of the throttle (with my foot, not a knife) unstuck the valve, but I would highly recommend checking everything before doing that.
And if you do it, adjust the TV cable properly after as some of the older units can get weak and make it easy to slip and get loose.
And if you do it, adjust the TV cable properly after as some of the older units can get weak and make it easy to slip and get loose.
Re: Shift points wrong
SOLVED.....kinda. I adjusted the TV cable and it ran properly and shifted fine. It just needs a bit more adjustment

1989 Beretta Base 2.8
Re: Shift points wrong
Good to hear, that is exactly what I thought of when i read this.
I assume it didn't get driven very long/far with it not adjusted? Only reason I ask is if they're left un-adjusted they can do some serious damage to the trans in a very short amount of time.
I assume it didn't get driven very long/far with it not adjusted? Only reason I ask is if they're left un-adjusted they can do some serious damage to the trans in a very short amount of time.