Big Tranny Issues - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-20-2003, 01:43 AM   #1
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Default Big Tranny Issues

[Edit: Forgot to say which car! lol, this is in the '95 SE.]
Ok, so driving today, I usually have music so I don't hear what the cars doing. But I noticed the gas pedal felt really weird, like it was way too soft, and I wasn't getting much power past 3800RPM, it just seemed to stop accelerating once it hit 3800RPM.

So I turned off the stereo to really listen closely. And this is the info I've gathered.
- Hard to get the engine past 3800RPM without scary noises, and flooring it.
- Accelerating more than "granny-like" causes scary nosies.
- When idling in park, there are some NEW almost clinking noises coming from the tranny area, about 2/sec, not appearing to be in any timed sequence, they're pretty random.

Now to define "scary noises" as I'm sure you're all cursing at me to elaborate. It sounds like some kinda of clanking almost, I'm sorry it'* really hard to explain. How about, it just doesn't sound "right" at all!

Does anyone have any ideas as what in the world is going on?

The car has about 220,000KM on it, with the original tranny, and a rebuilt engine, the rebuilt engine has about 20,000KM onit.

Thanks for any help guys//girls.
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Old 07-20-2003, 03:27 AM   #2
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I sent you a PM. See if this sounds familiar:

http://www.bonnevilleattitude.com/fo...428&highlight=

To sumarize.... the problem isn't your tranny, it'* your crank sensor. It is failing at 3800 rpm. Don't ask why at 3800 rpm, I can't yell you, all I can say is "been there, done that".
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Old 07-20-2003, 04:43 AM   #3
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I had a chat with Brad (acid) about this earlier..I knew you'd come thru Gord..
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Old 07-20-2003, 04:47 AM   #4
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Quote:
Originally Posted by 89BonnieSE89
I had a chat with Brad (acid) about this earlier..I knew you'd come thru Gord..
That just sounded too familiar. With any luck it will be just the sensor, and not the ignition too. Although, if it is...MSD is the way to go!
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Old 07-20-2003, 10:30 PM   #5
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Hell, I'd be fine with the crank sensor going bad! It sure beats a tranny going bad!

I had a crank sensor TOTALLY die in our '98, my father went to start it one morning, turned over, no spark. New crank sensor and all was well.

Thanks guys!

Do you think it would be an issue to drive the car at fair bit, as long as like 3500RPM is exceeded?

Our 98 was recently in an accident and needs to get repaired, so my father'* only means of getting to work will be the 95.....
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Old 07-21-2003, 12:28 AM   #6
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Quote:
Originally Posted by aCiD
Our 98 was recently in an accident and needs to get repaired, so my father'* only means of getting to work will be the 95.....
Dude sorry to hear that...
whta happened?
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Old 07-22-2003, 12:27 AM   #7
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Quote:
Originally Posted by Drifter420
Quote:
Originally Posted by aCiD
Our 98 was recently in an accident and needs to get repaired, so my father'* only means of getting to work will be the 95.....
Dude sorry to hear that...
whta happened?
Some jackass who was, we'll say less than a smart driver, stood on the brakes because they were scared of a cop directing traffic, when it was clear he was saying, GO. So my father was watching the cop, and expected this person to continue on. So the Grand Am in front stood on the brake, so did my father a little to late, and his rear-end went right under the Grand Prix'* and pushed up the hood, and scartched the crap outta the bumper. So the hood needs some serious work, and the bumper just needs some rubbing compound.
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Old 07-23-2003, 01:34 AM   #8
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Yes is could very well be the sensor but I am in the process of replacing my transmission because of the very same noise. If you start the car and it begins making a familiar clicking noise it is probably a reverse drum in your tranny that has gone bad.
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Old 07-23-2003, 02:59 AM   #9
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Well the car went to visit the mechanic today. And they listened to it, and reved it good. And said that is was nothing too serious for now and that they would look at it in detail on Friday.

I guess, I'll inspect all the pulleys tomorrow before driving it, and not go over 3500RPM, damn that'* going to be a challenge.
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Old 07-25-2003, 03:34 PM   #10
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Well they've now officially looked at the car and diagnosed the problem as a loosened connecting rod bearing...

Since the engine was recently rebuilt this SHOULD be covered by the warranty, they're currently researching if it will be or not.

What would cause the loosening of a connecting rod bearing?
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