Tranny overdrive Question??? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-25-2003, 10:21 AM   #1
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Default Tranny overdrive Question???

Hey.. thanks for your responses on my oil pressure problem. Well now I am wondering if I have a problem with my tranny selenoid... When my 93' Bonny shifts into overdrive it will stay there.. buttt.. when I release the pedal, it shifts out of od... when I apply the gas it will shift back into overdrive and will stay there.. My question is.. is this normal?.. I don't think it is. But it'* been doing this since I bought the car last year.. Again.. please help me out on this problem..or is this normal.. Thanks..
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Old 09-25-2003, 11:27 AM   #2
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my car does something similiar. I didn't know how to explain it. I was just going to wait until our Midwest meet and show the ppl there what my problem is. My car goes throgh 1st, 2nd, and 3rd gear just fine. 4th gear takes a while to kick in until 45mph. Sometimes it will gointo 4th gear at 35mph. Then OD kicks in at 50mph. When I take my foot off the accelorator, the motor sounds like I put the car in Neutral. Until I put my foot on the accelorator again its back in the gears again. My 97 never did that.
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Old 09-25-2003, 12:02 PM   #3
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Quote:
Originally Posted by ssesc93
my car does something similiar. I didn't know how to explain it. I was just going to wait until our Midwest meet and show the ppl there what my problem is. My car goes throgh 1st, 2nd, and 3rd gear just fine. 4th gear takes a while to kick in until 45mph. Sometimes it will gointo 4th gear at 35mph. Then OD kicks in at 50mph. When I take my foot off the accelorator, the motor sounds like I put the car in Neutral. Until I put my foot on the accelorator again its back in the gears again. My 97 never did that.
Correct me if I'm wrong, but I think that'* just the torque converter locking in. Mine does that, as do others. I think this was discussed in another thread, I'll see if I can find it...
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Old 09-25-2003, 12:06 PM   #4
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I did remeber the thread too. I was speaking of anytime i take my foot off the accelorator , oh i didn't say this, i could be in 4th, no OD and still the car acts like its in neutral if i release the accelortor.
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Old 09-25-2003, 12:09 PM   #5
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Quote:
Originally Posted by ssesc93
I did remeber the thread too. I was speaking of anytime i take my foot off the accelorator , oh i didn't say this, i could be in 4th, no OD and still the car acts like its in neutral if i release the accelortor.
Here it is just in case:

http://www.bonnevilleclub.com/forum/...rque+converter

4th gear is OD, isn't it? When I take my foot off the gas, it drops to like 900-1000 rpm, and the car coasts. When I step on the gas, it locks back in and grabs to about 1800 rpm in 4th, or OD. Is this what you're talking about??
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Old 09-25-2003, 12:25 PM   #6
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Yes. But, it does this in all gears. Not just OD. I can do 30 mph and slow down, not pressing on the brake, and the motor sound like it automatically is in neutral. Wheather its on take off or highway speed, when I let up off the accelorator it sound like its in neutral. I thought the car suppose to downshift.
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Old 09-25-2003, 12:26 PM   #7
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Quote:
Originally Posted by TrueWildMan
Quote:
Originally Posted by ssesc93
I did remeber the thread too. I was speaking of anytime i take my foot off the accelorator , oh i didn't say this, i could be in 4th, no OD and still the car acts like its in neutral if i release the accelortor.
Here it is just in case:

http://www.bonnevilleclub.com/forum/...rque+converter

4th gear is OD, isn't it? When I take my foot off the gas, it drops to like 900-1000 rpm, and the car coasts. When I step on the gas, it locks back in and grabs to about 1800 rpm in 4th, or OD. Is this what you're talking about??
Well folks.. if I understand this right.. this is normal.. It just seems odd that the torque converter would disengage when you release the gas pedal.. at 60+mph. I would think the converter would stay engaged.. I just don't like the way the bonny shifts in and out of overdrive.. seems like it would be hard on the tranny everytime you release the gas pedal it shifts.. Thanks alot for the info..This is a great site.. and even better people who are members here..
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Old 09-25-2003, 12:32 PM   #8
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Quote:
Originally Posted by dluttmer
Quote:
Originally Posted by TrueWildMan
Quote:
Originally Posted by ssesc93
I did remeber the thread too. I was speaking of anytime i take my foot off the accelorator , oh i didn't say this, i could be in 4th, no OD and still the car acts like its in neutral if i release the accelortor.
Here it is just in case:

http://www.bonnevilleclub.com/forum/...rque+converter

4th gear is OD, isn't it? When I take my foot off the gas, it drops to like 900-1000 rpm, and the car coasts. When I step on the gas, it locks back in and grabs to about 1800 rpm in 4th, or OD. Is this what you're talking about??
Well folks.. if I understand this right.. this is normal.. It just seems odd that the torque converter would disengage when you release the gas pedal.. at 60+mph. I would think the converter would stay engaged.. I just don't like the way the bonny shifts in and out of overdrive.. seems like it would be hard on the tranny everytime you release the gas pedal it shifts.. Thanks alot for the info..This is a great site.. and even better people who are members here..
So..when you let off the gas, the rpm'* rise, or lower??
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Old 09-25-2003, 12:35 PM   #9
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I have a 93 Bonnie that does the EXACT same thing. I've only owned it 2 months and at first I thought I bought a Bonnie with a bad tranny. Everytime I let up on the gas pedal when going 55-60+ the car down shifts and slows down. Then when you push the gas again the RPMs jump back up to 1600 or so. Makes me feel better that it'* not abnormal. I thought at first that it was a bad pressure switch or something. Either way...that'* gotta be taxing the transmission.
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Old 09-25-2003, 01:05 PM   #10
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I'm pretty sure it'* normal behavior. Did you notice it'* hard to accelerate when the car is in OD? That'* probably why it has been programmed to drop out of OD whenever you accelerate more than just a little bit.
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