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Ok i have a 96 bird with 100145 miles on it, its been doing great but now i have noticed something strange... Lets say i am doing 35 (OD lock out) and i approach a hill, i notice the car starts to lag a bit. So i step down on the gas, but instead of dropping down in gear it makes a vibration with a very strange sound. Hard to describe the sound but a down shift chattering. Any ideas? I hope i dont need a new tranny!

Oh say it aint so, say it aint so...

TnX
Ryan
 

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Can you tell us more? Does it only happen at one speed and is that from a cruising speed? Does it happen on the 3-4 upshift? What rpm are you at when it happens? Are there any other strange things the car does?
Torque converter shudder is most commonly described as feeling like "running over rumble strips" and it usually happens on application of the converter clutch.
 

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Sweet T
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Where are you in California?

It sounds like torque converter shudder, but like Darrin said.. that usually happens on the 3-4shift during application of the tc clutch. The first part of what you're describing sounds pretty normal, when you start to go up hill at partial throttle, the engine will come under load and will usually start to bog. If it's happening on the 3-2 downshift... I'm thinking that's not something so simple as switching to Mercon V...


Read here and tell us if any of those sound like your problem.
 

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my .02

IMO Mercon V or any other fluid will solve this problem. I use Mercon and I still have the same problem. I think it's a trademark of these Thunderbirds. If you want to avoid the shudder feeling press the gas harder :) otherwise you'll feel it.
 

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Nightmist_Outlaw said:
IMO Mercon V or any other fluid will solve this problem. I use Mercon and I still have the same problem. I think it's a trademark of these Thunderbirds. If you want to avoid the shudder feeling press the gas harder :) otherwise you'll feel it.
Mercon V will solve the problem if the fluid is the problem. If he has an engine miss or fried converter clutch it will not.
 

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Discussion Starter #7
Darrin said:
Can you tell us more? Does it only happen at one speed and is that from a cruising speed? Does it happen on the 3-4 upshift? What rpm are you at when it happens? Are there any other strange things the car does?
Torque converter shudder is most commonly described as feeling like "running over rumble strips" and it usually happens on application of the converter clutch.
Usualt it happens at cruising speed, it does not happen going from 3 to OD an i think the rpm is just above 1500...AND yes it does feel like im driving over "rumble strips". Sometimes if im cruising down the free way in OD and i want to pass some other car, i hit the gas the engine revs hi RPM's and has a hesitation before it down ****s, is that a prob also?

Thanks for the help every one, im going to do a fluid change this week end
 

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r_macleod said:
Usualt it happens at cruising speed, it does not happen going from 3 to OD an i think the rpm is just above 1500...AND yes it does feel like im driving over "rumble strips". Sometimes if im cruising down the free way in OD and i want to pass some other car, i hit the gas the engine revs hi RPM's and has a hesitation before it down ****s, is that a prob also?

Thanks for the help every one, im going to do a fluid change this week end
Read the tech articles, and make sure you do it the way it tells you. Its the best way to get most of the fluid out of the trans. You will need to drain the converter, and when you drop the pan, be sure to clean it up with some brake-kleen, and install a new pan filter (about 14 dollars at the dealer)

Good time to flush the cooler lines with some kooler kleen, and install a magnefine.

JH
 

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r_macleod said:
BTW, i am in a little town called Moraga in the San Fransisco bay area... to the person who asked
I am in Santa Rosa...glad to meet another TCCOA addict.

BTW, if you know where santa Rosa is, then you might know where Rohnert park is...there is a small club gathering happening next month. A group Dyno-meet.

You might want to drive over, and let us check out your car. its a good hour for you from Moraga...but you will meet some great folks.

Good luck with your tranny issue. I would at least try to replace the fluid(including the TC), and then drive it a few hundred miles to see if it improves. it is alot cheaper than a tranny, and Mercon V is like an ice cold glass of water when your thirsty...your tranny will thank you(if thats what it is).
 

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when i first bought my car it was making a shuddering at idle and under load when going up a hill (kirker pass if you know where that is) i removed all of the trans fluid and the trans filter and drained the torque converter replaced all the tranny fluid wit that mercon V stuff and it was shiftin great until my engine blew up but now i have a new tranny out of a 02 gt so uhhh yea thats prolly what ur problem is, umm and when i took out the tranny fluid from my car it was a deep deep purple and its supposed to be a very light reddish maroon almost a pink
 

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From you description of the tranny fliud you had in there it was royal purple @ 10 bucks a quart.

burittobob said:
when i first bought my car it was making a shuddering at idle and under load when going up a hill (kirker pass if you know where that is) i removed all of the trans fluid and the trans filter and drained the torque converter replaced all the tranny fluid wit that mercon V stuff and it was shiftin great until my engine blew up but now i have a new tranny out of a 02 gt so uhhh yea thats prolly what ur problem is, umm and when i took out the tranny fluid from my car it was a deep deep purple and its supposed to be a very light reddish maroon almost a pink
 

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Dark brown is a sign of burnt clutches and severely overheated fluid. Purple fluid is a sign that something mechanical broke and dumped metal into the fluid. I see this alot on a4ld transmissions when the converters blow up.
Alan
 

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yea my fluid had a ton of metal fragments in it and it aslo hadnt been replaced in about 70k miles the guy before my only had the engine oil replaced
 
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