bad shifts
Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 54
Likes: 0
From: Lake in the Hills, IL
bad shifts hey guys, i wasnt exactly sure what to call this thread but my car has been shifting horrible.
last week i noticed my car wasnt shifting as hard as usual. then recently shifting from first to second it was more like a long rumble than a shift. under light acceleration it shifts ok but any time i go more than half throttle, it does this long studder of a shift lol
i checked my trans fluid and the level was ok but it seemed more brown than red. im going to change my trans fluid tomorrow i hope that will help. are there drain plugs on our cars or do i have to drop the whole pan? is my trans going or do you think changing the fluid will help?
thanks for any input
last week i noticed my car wasnt shifting as hard as usual. then recently shifting from first to second it was more like a long rumble than a shift. under light acceleration it shifts ok but any time i go more than half throttle, it does this long studder of a shift lol
i checked my trans fluid and the level was ok but it seemed more brown than red. im going to change my trans fluid tomorrow i hope that will help. are there drain plugs on our cars or do i have to drop the whole pan? is my trans going or do you think changing the fluid will help?
thanks for any input
Changing the fluid is probably not going to help. It sounds as if you are having a band failure or have a problem in the 1-2 accumulator circuit. While you have the pan down you might want to check the 1-2 accumulator pioston. This is a housing located in the rear of the case/pan area with three 10mm head bolts. The piston might be cracked or you could have a broken spring. hope this helps you. Vince
I'm having a similar problem.
Last year around this time, I was playing with my car in the rain and after spinning the tires in 1st gear, I noticed I couldn't downshift into 1st shortly thereafter. Eventually I lost 2nd as well and only 3rd gear would take the car anywhere (yes, it's an auto). Any time the torque convertor would lockup it would just shake like crazy so I had to drive it in D for about 40 miles until I made it to my friends house.
He put in a used tranny with my old torque convertor and it wouldn't do anything. He threw in a different torque convertor and it worked.
However, ever since then the 1st to 2nd shift has been really sloppy. The 2nd to 3rd seems fine. Also, during the winter while the tranny was still cold, sometimes it would hit the rev limiter on the 1st to 2nd.
Does this sound like a tranny problem or torque convertor issue? I'm guessing tranny; when it goes, looks like I'll get a performabuilt or FLT.
Last year around this time, I was playing with my car in the rain and after spinning the tires in 1st gear, I noticed I couldn't downshift into 1st shortly thereafter. Eventually I lost 2nd as well and only 3rd gear would take the car anywhere (yes, it's an auto). Any time the torque convertor would lockup it would just shake like crazy so I had to drive it in D for about 40 miles until I made it to my friends house.
He put in a used tranny with my old torque convertor and it wouldn't do anything. He threw in a different torque convertor and it worked.
However, ever since then the 1st to 2nd shift has been really sloppy. The 2nd to 3rd seems fine. Also, during the winter while the tranny was still cold, sometimes it would hit the rev limiter on the 1st to 2nd.
Does this sound like a tranny problem or torque convertor issue? I'm guessing tranny; when it goes, looks like I'll get a performabuilt or FLT.
On The Tree
Joined: Jun 2007
Posts: 165
Likes: 0
From: haltom city/DFW, Texas
Sounds like Vinnie hit the nail on the head on the first issue .On the second transmission it may have a softer shifting servo setup so the soft 1-2 may be normal for the trans and you may need to shift kit it or put a different servo in it !
Originally Posted by big wally 55
Sounds like Vinnie hit the nail on the head on the first issue .On the second transmission it may have a softer shifting servo setup so the soft 1-2 may be normal for the trans and you may need to shift kit it or put a different servo in it !
Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 54
Likes: 0
From: Lake in the Hills, IL
Originally Posted by Vince @ FLT
Changing the fluid is probably not going to help. It sounds as if you are having a band failure or have a problem in the 1-2 accumulator circuit. While you have the pan down you might want to check the 1-2 accumulator pioston. This is a housing located in the rear of the case/pan area with three 10mm head bolts. The piston might be cracked or you could have a broken spring. hope this helps you. Vince
Originally Posted by Black95TA
thanks for the help. this might be a dumb question but if i see i have a broken piston or spring would it be easy to replace or is it somthing i should just have a shop do?
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Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 54
Likes: 0
From: Lake in the Hills, IL
Originally Posted by Vince @ FLT
Changing the fluid is probably not going to help. It sounds as if you are having a band failure or have a problem in the 1-2 accumulator circuit. While you have the pan down you might want to check the 1-2 accumulator pioston. This is a housing located in the rear of the case/pan area with three 10mm head bolts. The piston might be cracked or you could have a broken spring. hope this helps you. Vince
i dropped the pan and took off the three bolts. im not sure what im looking for now but the piston doesnt look cracked. i took some pics maybe you can help me out, what part do you think needs to be replaced? and is this the housing your talking about?
i was looking for the parts in your site i think i found the right one
http://finishlinetrans.com/store/pro...products_id=67
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Pull the piston in there out and under it you will find a broken spring and thats going to be your issue, blow into the hole at the edge to get it out easier
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Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 54
Likes: 0
From: Lake in the Hills, IL
Originally Posted by performabuilt
Pull the piston in there out and under it you will find a broken spring and thats going to be your issue, blow into the hole at the edge to get it out easier
i dont know why i didnt have much pressure on it at all. what the hell do i do about that? You will have to use and easy out for the bolt or drill and tap it and yes replacing that spring should fix you right up
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Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 54
Likes: 0
From: Lake in the Hills, IL
alright, i need more help. i finally got the spring yesterday, i drilled out the old bolt i broke, and made some new threads. i bolted the pan back up put the fluid in, staterd the car checked the fluid then took it for a test run. nothing changed! the 1-2 shift did the same thing, it still shuddered. it seems even worse now, when i got on it a little, as it shifted the rpms shot up so i let off. i dont know what i did wrong. maybe i didnt push the piston down far enough? i cant think of what else would go wrong. help
By the looks of the fluid in your pictures it looks like you might already have a band that has failed. This was more than likely due to the accumulator issue. I think it might be time for a rebuilt. Vince