I think a torque converter problem?? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-15-2006, 07:58 PM   #1
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Default I think a torque converter problem??

Hopefully this isn't a repeat. I searched around for a similar problem, but couldn't find it so here it goes:

I've got a wicked knock somewhere in the transmission. It ususally happens on the low end of 3rd gear (around 1500 rpm). I guess the best way to describe it is that it sounds like a rock in a coffe can wrapped in a blanket... (i've been thinking for a long time the best way to describe it and i think that is it.) I've also noticed recently that if i'm in a harder acceleration around a corner that i loose power...kind of like it slips out of gear or something. The transmission seems to shift fine and i don't have any problems like that on a straight away, just around a corner.

Does this sound like it is probably the torque converter?

I did have a check engine light come on about 2 months ago and i took it to a mechanic to read the code. The light was for another problem, but he said he also read a torque converter code. He said it wasn't recent, but i might have to have it looked at.
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Old 08-15-2006, 09:31 PM   #2
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Quick update to my first post: I just got down to my girlfriends place and on my way my "Traction Off" light came on and wouldn't go off. It used to do this a lot about 2 years ago, but i haven't had a problem with it since...until just today. Ideas?? Thanks
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Old 08-15-2006, 09:33 PM   #3
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I'm not sure, but this might also indicate a bad harmonic balancer.
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Old 08-15-2006, 09:38 PM   #4
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What is your transmission fluid level like?

Harmonic balancer is most apparent at idle...the rattle goes away with revs.
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Old 08-19-2006, 12:16 PM   #5
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my fluid was just a little low. I topped it off, but still having the same problems.

Any ideas? I need to go get it flushed, but i don't think it will help with the knock.
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Old 08-19-2006, 03:00 PM   #6
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on to the TC light......is your ABS light on also??
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Old 08-19-2006, 03:02 PM   #7
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Over fill the trans buy a 1/2 qt or so...and see if your corner acceleration issues disappear or not...
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Old 08-20-2006, 11:06 AM   #8
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Quote:
on to the TC light......is your ABS light on also??
The light isn't on anymore. When it used to do it a lot all i would do is turn the car off and let it sit for a while and when i started it back up the tc would be on again. This was the first time in a while that it started to do it again. I don't know if it'* a sensor or what and it'* kinda hard to recreate it since it seems to be random.

Quote:
Over fill the trans buy a 1/2 qt or so...and see if your corner acceleration issues disappear or not...
I thought it was really bad to over fill it. I know it is for oil, but i thought it was the same for the tranny?? I'll do it, i'm just wondering the thought process behind it...
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Old 08-20-2006, 12:48 PM   #9
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Quote:
Originally Posted by Widetrack Pontiac

Quote:
Over fill the trans buy a 1/2 qt or so...and see if your corner acceleration issues disappear or not...
I thought it was really bad to over fill it. I know it is for oil, but i thought it was the same for the tranny?? I'll do it, i'm just wondering the thought process behind it...
They underrate the dipsticks on our tranny'* for a "Saftety", so you can't over fill it, and have a margin to go a lil over. But when you corner hard, these trannys are notorious for having the fluid run away from the pump and make the trans slip.
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Old 08-20-2006, 11:04 PM   #10
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Thanks, i'll give her a try tomorrow and she what she does.
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