trans temp high, and shift error reported
Thread Starter
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Joined: May 2004
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From: Wichita KS
trans temp high, and shift error reported I went out to take another test drive on the transmission now that its 90 degrees outside to see if it would make a difference, and I found some startling things...
First the transmission ran about about around 175-185 on the highway, and eventually got up to a high of after i parked the car but left it running. Also it reported on hptuners that it was having a shift error of about .5seconds, but the shifts felt firm
This is hotter than a stock transmission will normally run isnt it? Or am i over reacting? I am looking into getting a cooler, so hopefully that will help, but i am wondering if there is something wrong with the cooler i have now... Would adding some fluid help? I checked it and the fluid seemed to be in the right range, and the fluid is brand new.... any ideas would be GREATLY appreciated!
First the transmission ran about about around 175-185 on the highway, and eventually got up to a high of after i parked the car but left it running. Also it reported on hptuners that it was having a shift error of about .5seconds, but the shifts felt firm
This is hotter than a stock transmission will normally run isnt it? Or am i over reacting? I am looking into getting a cooler, so hopefully that will help, but i am wondering if there is something wrong with the cooler i have now... Would adding some fluid help? I checked it and the fluid seemed to be in the right range, and the fluid is brand new.... any ideas would be GREATLY appreciated!
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From: Wichita KS
Originally Posted by RevGTO
High of what temp?
if the temp isn't a life or death problem, is that shift error being reported a problem as well?
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From: So.Cal.
The shift error is the difference in time between the desired shift time and the actual shift time.
If you see 0.5s shift time error during an upshift with throttle applied, then that is marginal ok, not the best; it should be okay unless you can feel the shifts being slow and sloppy; how do your shifts feel when you have 30+% throttle...?
If you see 0.5s on a shift after you let off the throttle, that is fine no problem.
I think you don't have to worry.
If you see 0.5s shift time error during an upshift with throttle applied, then that is marginal ok, not the best; it should be okay unless you can feel the shifts being slow and sloppy; how do your shifts feel when you have 30+% throttle...?
If you see 0.5s on a shift after you let off the throttle, that is fine no problem.
I think you don't have to worry.
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Verdad Gallardo TECH Senior Member
Joined: Apr 2002
Posts: 6,080
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From: So.Cal.
Using your HPT you can set the Desired Shift Times for 1-2, 2-3 and 3-4 to values like 0.3s, and increase the shift pressures 10%;
this will make the shifts feel quicker and a little firmer, and will reduce wear from ramp out/ramp in of apply devices during a shift, and is not harsh enough to damage any hard parts.
this will make the shifts feel quicker and a little firmer, and will reduce wear from ramp out/ramp in of apply devices during a shift, and is not harsh enough to damage any hard parts.
Thread Starter
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From: Wichita KS
Originally Posted by joecar
Using your HPT you can set the Desired Shift Times for 1-2, 2-3 and 3-4 to values like 0.3s, and increase the shift pressures 10%;
this will make the shifts feel quicker and a little firmer, and will reduce wear from ramp out/ramp in of apply devices during a shift, and is not harsh enough to damage any hard parts.
this will make the shifts feel quicker and a little firmer, and will reduce wear from ramp out/ramp in of apply devices during a shift, and is not harsh enough to damage any hard parts.
i can email the log file to you if thats alright, it wont let me post it up as an attachment...
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Joined: Apr 2002
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From: So.Cal.
I can't view the log, I use the other tuner package.
Try this....
Display the chart on your PC and go SHIFT-PrintScreen,
then open Paint or IrfanView and paste, save to image file (.jpg or .png).
Then goto http://www.imageshack.us/ and upload the saved image file and
copy the direct image link (the last link shown on the page).
Then in here do a reply, go advanced, press the mountain picture button, and paste in your link, submit reply.
For example, like this...
Try this....
Display the chart on your PC and go SHIFT-PrintScreen,
then open Paint or IrfanView and paste, save to image file (.jpg or .png).
Then goto http://www.imageshack.us/ and upload the saved image file and
copy the direct image link (the last link shown on the page).
Then in here do a reply, go advanced, press the mountain picture button, and paste in your link, submit reply.
For example, like this...
Last edited by joecar; Apr 14, 2006 at 04:15 PM.
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
Originally Posted by natronathon
im sorry i typed that in a rush. a high of 192; if the temp isn't a life or death problem, is that shift error being reported a problem as well?
Thread Starter
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Joined: May 2004
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From: Wichita KS
Rev, i never noticed you were from wichita... when mattsls1 gets his car running again, we all need to go cruising... also, I'd love to see what that 3000 rpm stall feels like! This summer buddy!
The shifts feel good, but i think i will get a tranny cooler regardless to prolong the life of my trans for as long as possible till i can afford a flt stage 3... Thanks guys... Ill post up that log file tomorrow when im not slightly drunk! lol
The shifts feel good, but i think i will get a tranny cooler regardless to prolong the life of my trans for as long as possible till i can afford a flt stage 3... Thanks guys... Ill post up that log file tomorrow when im not slightly drunk! lol
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
Yep, I'm around ... PM me if you'd like to roll, drive my car sometime or head to the track. Had a great track day last Saturday but nothing doin' now with it so hot. Be forewarned, though - I'm an OF, lol.
Thread Starter
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From: Wichita KS
Originally Posted by RevGTO
Yep, I'm around ... PM me if you'd like to roll, drive my car sometime or head to the track. Had a great track day last Saturday but nothing doin' now with it so hot. Be forewarned, though - I'm an OF, lol.
Yeah, when school finishes up (WSU) Ill have to take you up on that offer! Thanks bud!
