Howling noise??
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Elder User
Joined: Jul 2008
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Howling noise??
Ok as the title describes and no I don't have a pack of wild wolves but anyway going down the highway I seem to get this howling noise that seems to be coming from the transmission hump. I have had problems with the C-6 in the past so could this noise be coming from the tranny?? So just recently I changed the fliud and filter and it looked like Arizona mud plus there was a graphite substance in the pan that I had to scrape with a putty knife. After the new fluid the C-6 started to shift weird from 1-2 and sometimes even made a grinding noise. Well I added Seafoam's Tranny Tune and now it feels a little better and the noise seems to be a little softer. So what's going on do you think?? Here is something else, before the fluid change my speedo would jump around from 60 to 70 mph but now it's pretty steady. How would a fluid change and a additive affect this??
Tuned
Joined: Mar 2003
Posts: 394
Likes: 10
From: austin
When you changed the C6 fluid, did you drain the torque converter too, or just what comes out when you drop the pan to get to the filter? How clean was it after you put it back together (some people don't like changing coolant/ATF like that because it they say stirs up some stuff that then gets circulated through the system).
Are you sure you didn't possibly mess with the vacuum modulator line causing shifting issues?
Do you have a tach to see how many RPM you're actually turning and where it's shifting?
Just a couple ideas until the pros come around with some of the less common solutions.....
-Chris
Are you sure you didn't possibly mess with the vacuum modulator line causing shifting issues?
Do you have a tach to see how many RPM you're actually turning and where it's shifting?
Just a couple ideas until the pros come around with some of the less common solutions.....
-Chris
Elder User
Joined: Jan 2004
Posts: 887
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From: Colorado
If you had to add an additive to your transmission to get it to work properly, you should start saving for a rebuilt transmission now, because pretty soon you are going to have to put in a new or rebuilt trans.
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Elder User
Joined: Jul 2008
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Yep that is what I was thinking too.
Thread Starter
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Elder User
Joined: Jul 2008
Posts: 557
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When you changed the C6 fluid, did you drain the torque converter too, or just what comes out when you drop the pan to get to the filter? How clean was it after you put it back together (some people don't like changing coolant/ATF like that because it they say stirs up some stuff that then gets circulated through the system).
Are you sure you didn't possibly mess with the vacuum modulator line causing shifting issues?
Do you have a tach to see how many RPM you're actually turning and where it's shifting?
Just a couple ideas until the pros come around with some of the less common solutions.....
-Chris
Are you sure you didn't possibly mess with the vacuum modulator line causing shifting issues?
Do you have a tach to see how many RPM you're actually turning and where it's shifting?
Just a couple ideas until the pros come around with some of the less common solutions.....
-Chris
Thread Starter
|
Elder User
Joined: Jul 2008
Posts: 557
Likes: 0
When you changed the C6 fluid, did you drain the torque converter too, or just what comes out when you drop the pan to get to the filter? How clean was it after you put it back together (some people don't like changing coolant/ATF like that because it they say stirs up some stuff that then gets circulated through the system).
Are you sure you didn't possibly mess with the vacuum modulator line causing shifting issues?
Do you have a tach to see how many RPM you're actually turning and where it's shifting?
Just a couple ideas until the pros come around with some of the less common solutions.....
-Chris
Are you sure you didn't possibly mess with the vacuum modulator line causing shifting issues?
Do you have a tach to see how many RPM you're actually turning and where it's shifting?
Just a couple ideas until the pros come around with some of the less common solutions.....
-Chris
Tuned
Joined: Mar 2003
Posts: 394
Likes: 10
From: austin
Sorry for any confusion, I only mentioned the coolant as another example, didn't mean to imply you should have done anything with coolant lines.
I would go back & redo the fluid change, but get the TC this time, too. You shouldn't have to remove the tranny or the TC to drain it.
-Chris
I would go back & redo the fluid change, but get the TC this time, too. You shouldn't have to remove the tranny or the TC to drain it.
-Chris
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Postmaster
Joined: Aug 2000
Posts: 3,312
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From: Eldorado Ca. USA
There is a drain plug on the torque converter. Remove the inspection plate, rotate the motor over by hand until you see a 3/8"(ish) plug. While you are down there, you might as well adjust your intermediate band, if you are slipping going into second.
I am a firm believer of regular maintenance, however if your trans is severely neglected, sometimes servicing it will accelerate its demise. On several occasions I have serviced neglected or worn transmissions, and have lost them afterwords in a few thousand miles. In my opinion, it seems that the worn clutch material circulates thru the fluid, acting as additional grip on the clutches. When you flush away all of that extra "grip", the clutches have less to grip on, thus they slip. Eventually, the transmission gets worse. In other words, start looking for a good used transmission, or a core to have rebuilt, or if you have down time you can afford, yank that trans and have it rebuilt.
I am a firm believer of regular maintenance, however if your trans is severely neglected, sometimes servicing it will accelerate its demise. On several occasions I have serviced neglected or worn transmissions, and have lost them afterwords in a few thousand miles. In my opinion, it seems that the worn clutch material circulates thru the fluid, acting as additional grip on the clutches. When you flush away all of that extra "grip", the clutches have less to grip on, thus they slip. Eventually, the transmission gets worse. In other words, start looking for a good used transmission, or a core to have rebuilt, or if you have down time you can afford, yank that trans and have it rebuilt.
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Elder User
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There is a drain plug on the torque converter. Remove the inspection plate, rotate the motor over by hand until you see a 3/8"(ish) plug. While you are down there, you might as well adjust your intermediate band, if you are slipping going into second.
I am a firm believer of regular maintenance, however if your trans is severely neglected, sometimes servicing it will accelerate its demise. On several occasions I have serviced neglected or worn transmissions, and have lost them afterwords in a few thousand miles. In my opinion, it seems that the worn clutch material circulates thru the fluid, acting as additional grip on the clutches. When you flush away all of that extra "grip", the clutches have less to grip on, thus they slip. Eventually, the transmission gets worse. In other words, start looking for a good used transmission, or a core to have rebuilt, or if you have down time you can afford, yank that trans and have it rebuilt.
I am a firm believer of regular maintenance, however if your trans is severely neglected, sometimes servicing it will accelerate its demise. On several occasions I have serviced neglected or worn transmissions, and have lost them afterwords in a few thousand miles. In my opinion, it seems that the worn clutch material circulates thru the fluid, acting as additional grip on the clutches. When you flush away all of that extra "grip", the clutches have less to grip on, thus they slip. Eventually, the transmission gets worse. In other words, start looking for a good used transmission, or a core to have rebuilt, or if you have down time you can afford, yank that trans and have it rebuilt.
Postmaster
Joined: Aug 2000
Posts: 3,312
Likes: 1
From: Eldorado Ca. USA
Do a certs with retsin on c6 band adjustment, I dont want to tell you wrong. I buy 4 gallons of walmart cheapie trans fluid, what ever I don't use, I put what I do not use on the shelf for next time.
I would not rule out the U-joints. Take em off, pull the caps off one at a time, inspect the bearing surface for any pitting, scoring, grooves, and look at the needle bearings for damage. Pretty much if you cant remember when the last time they were changed, or you never changed them at all, I would bet its time to change them out. It's cheap insurance against being stranded on the side of the road.
I would not rule out the U-joints. Take em off, pull the caps off one at a time, inspect the bearing surface for any pitting, scoring, grooves, and look at the needle bearings for damage. Pretty much if you cant remember when the last time they were changed, or you never changed them at all, I would bet its time to change them out. It's cheap insurance against being stranded on the side of the road.