Chatter going into OD under light acceleration-HELP
Re: Chatter going into OD under light acceleration-HELP This sounds like the same thing that happened to my ST3500. I ended up pullin it out one weekend and sending it back to Yank. Mike told me it was a warped clutch caused by extremely high line pressure. My $.02. I would def. try all the easy stuff first to see if that helps.
-josh
-josh
On The Tree
Joined: Dec 2001
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From: Bethel, CT
Chatter going into OD under light acceleration-HELP Posted several weeks back.
Put the stock MAF ends back on and installed a B&M Shift+ at the lowest setting. This seems to help but it still occurrs occasionally at a much lesser degree.
To be honest, I prefer the way the car feels without the B&M Shift+ on, although it sure firms up the shifts at light throttle.
Of course, driving in D negates the problem also, but most of my driving is under 55 mph in traffic.
My question is: where do I go from here-live with it or fix/replace the converter (Super Thruster 3000)?
<small>[ June 23, 2002, 12:45 PM: Message edited by: PonchoFan ]</small>
Put the stock MAF ends back on and installed a B&M Shift+ at the lowest setting. This seems to help but it still occurrs occasionally at a much lesser degree.
To be honest, I prefer the way the car feels without the B&M Shift+ on, although it sure firms up the shifts at light throttle.
Of course, driving in D negates the problem also, but most of my driving is under 55 mph in traffic.
My question is: where do I go from here-live with it or fix/replace the converter (Super Thruster 3000)?
<small>[ June 23, 2002, 12:45 PM: Message edited by: PonchoFan ]</small>
Re: Chatter going into OD under light acceleration-HELP </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">This sounds like the same thing that happened to my ST3500. I ended up pullin it out one weekend and sending it back to Yank. Mike told me it was a warped clutch caused by extremely high line pressure. My $.02. I would def. try all the easy stuff first to see if that helps.
-josh
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Mike told me the same thing when I sent him my ST3500, but the reason I was taking the converter out in the first place was because Mike first said that I was getting low line pressure and that was causing the shudder and that I needed a shift kit to fix the problem. I did try the FM with no luck. After he got the converter he said the problem was from high line pressure and didn't give me full credit. I still don't know if this was BS or not
-josh
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Mike told me the same thing when I sent him my ST3500, but the reason I was taking the converter out in the first place was because Mike first said that I was getting low line pressure and that was causing the shudder and that I needed a shift kit to fix the problem. I did try the FM with no luck. After he got the converter he said the problem was from high line pressure and didn't give me full credit. I still don't know if this was BS or not
Re: Chatter going into OD under light acceleration-HELP Do you have edit?
Raising the lock-up speed a few mph at certain TPS% may help. For example you may not have shudder until 25% TPS. You could leave the 0% - 18% settings alone, add 4 mph at 25% & 31%, and 10 mph to 37% and above and cure the problem that way.
Raising the lock-up speed a few mph at certain TPS% may help. For example you may not have shudder until 25% TPS. You could leave the 0% - 18% settings alone, add 4 mph at 25% & 31%, and 10 mph to 37% and above and cure the problem that way.
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On The Tree
Joined: Dec 2001
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From: Bethel, CT
Re: Chatter going into OD under light acceleration-HELP What kind of 'friction modifier' should I use?
Nope, don't have edit.
I'm really disgusted over the whole thing. If it gets worse, I'm putting the stock converter back in. Where I go from there, I haven't decided.
Nope, don't have edit.
I'm really disgusted over the whole thing. If it gets worse, I'm putting the stock converter back in. Where I go from there, I haven't decided.
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Verdad Gallardo On The Tree
Joined: Dec 2001
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From: Bethel, CT
Re: Chatter going into OD under light acceleration-HELP Here's the latest.
E-mailed Mike at Yank who agrees with the diagnosis of a glazed converter clutch.
Recommended Lube Gard Friction Modifier. (However, the manufacturer warns that overuse of the friction modifier may cause transmission slippage.) And if that doesn't work, a $150 +$28 shipping rebuild should cure it. Says it will be 'updated' at the same time.
Unfortunately, a $365 install charge gets added and double that if I want the car back with the stock converter while its being shipped and fixed.
Add in shipping and it's 9 bills.
With no guarantee that it won't happen again.
I think I'll look at alternative converters from other manufacturers if it comes to that. I strongly believe that the clutch material/design is suspect in this converter for this to occurr.
E-mailed Mike at Yank who agrees with the diagnosis of a glazed converter clutch.
Recommended Lube Gard Friction Modifier. (However, the manufacturer warns that overuse of the friction modifier may cause transmission slippage.) And if that doesn't work, a $150 +$28 shipping rebuild should cure it. Says it will be 'updated' at the same time.
Unfortunately, a $365 install charge gets added and double that if I want the car back with the stock converter while its being shipped and fixed.
Add in shipping and it's 9 bills.
With no guarantee that it won't happen again.
I think I'll look at alternative converters from other manufacturers if it comes to that. I strongly believe that the clutch material/design is suspect in this converter for this to occurr.
Re: Chatter going into OD under light acceleration-HELP You might consider fed ex overnight rather than paying for 2 installs if you can live for a couple days w/o the car. The extra shipping will be a lot less than $365
On The Tree
Joined: Dec 2001
Posts: 176
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From: Bethel, CT
Re: Chatter going into OD under light acceleration-HELP Poured half a bottle (5 oz.) of Lube Gard Friction Modifier in yesterday. With the B&M Shift+ off, car still chatters in OD at light throttle, but not nearly as bad. Turned the Shift+ on to it's lower setting and am on the way out to wring it out.
Wish me luck.
Wish me luck.
TECH Fanatic
Joined: Nov 2001
Posts: 1,780
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From: Mi./Al.
Re: Chatter going into OD under light acceleration-HELP I had a tranny chatter problem in a non LS1 vehicle once, I used the whole bottle and somewhere between 50 and 100 miles it went away, maybe you should use all ten ounces.
