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#1
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2-3 shift flare confusion...
OK...I've been searching the archives all weekend trying to figure out what to do about my tranny issues and I'm confused. It occasionally flares between the 2-3 shift, and sometimes doesn't find 3rd at all. It does not slip in gear once it finds it, though, and when I drop it into 3rd by moving the shifter, it's fine. I've seen several possible fixes here but I'm confused about which one to try. Do I:
a. Adjust the brake band (looser or tighter?) b. disconnect the tranny resistor behind the battery c. crush some other resistor somewhere (not sure at all about this one...) d. get a new transmission. e. none of the above The fluid's just been changed with synthetic, and I've made the appropriate sacrifices and supplications to the 4EAT gods. Thanks for any and all help- |
#2
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Mine does the same thing. Look forward to an answer as long as it is not a new transmission.
Gene
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Gene and Ben 1992 SVX LS AWD 110K - Liquid Silver 1994 SVX LSi AWD 128K - White Pearl (daily driver) 1994 SVX LSi AWD 95K - Emerald Pearl (sold) 1992 SVX LS-L AWD 115K - Dark Teal 4.44 swap (sold) |
#3
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Any fixes will be temporary. The likely one will be the band brake adjustment. The ultimate solution would be replacing the tranny and the cheapest way to do that would be to look for a 4.11 or 4.44 geared tranny/rear diff from another model Subaru.
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#4
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What about a bad Throttle position sensor? Does the symtom "can't find 3rd rule this out? Mine does the occasional 2-3 flare only on very light throttle. I ran through the trouble codes and sure enough I get a bad TPS and speed sensor.
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#5
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2nd/3rd flare.
The flare is caused by the brake band wearing, this is normal, and an adjuster is provided to bring the band clearance back to orignal settings. The adjustment is located on the left/top/front, of the transmission. The adjustment is made by unlocking the lock nut, and screwing the adjuster down till it is as tight as you can get it, with two fingers on a 3" spanner, then unscrew the adjuster out 3 full turns, to set the right clearence.
Don't do the 1/4 turn in/out to find the right setting. Do the full setup as I have discribed it. There are some good posts on doing the job, on the forum. This is not a temporary fix, it is a service adjustment that should be carried out every 100k, just like adjusting the hand brake, and a lot cheaper than replacing the box, $100/$200 should get it done. All the best. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#6
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Quote:
The fix is to adjust the band, before it slips itself to destruction. The codes for the TPS/speed sensor, may disappear at the time. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#7
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Sadly, I adjusted the Brake band last night to no avail. Still getting the 2-3 flare under light load.
Going to look at electrical as the cause. (You say, "Electrical problems, on a Subaru! You must be joking!") I think I'll measure TPS output...try cleaning with contact cleaner, whatever that is, (Radio Shack), then possibly remove and replace. Finally maybe look at replacing the TCU, if I can get one cheap. someone suggested this fixed their problem (last resort). I won't spend too much more time or money before swapping to manual, but I gotta try something right? I hope you find a solution davew833. Let me know what you come up with. Marc |
#8
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Quote:
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-Mike '92 Pearl LS-L (sans Spoiler) #0993 Mfg. 5/91 "It says here, 'Breakfast any time'... That's right... In that case, I'll have the pancakes in the Age of Enlightenment..." |
#9
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RE: Brake band adjustment
I also did the brake band adjustment last night and at this time I am cautiously optimistic. I got no 2-3 flare during limited driving last night and this morning. (Knock on wood!) Shifts seem to be smoother and tighter although I am getting a slight 'braking' effect under hard acceleration (I may go back and loosen the band a bit).
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#10
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Fingers crossed !
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#11
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Check the TPS first, It is much easier than adjusting the brake band back and fourth. Cleaning only helps when your TPS is dirty not when it is broken.
My tranny was flaring between 2nd and 3rd, especialy at constant speeds, i.e 40, 50 , 60 and minimum load, when i steped on it i was changing gears perfectly. Replaced the TPS and it is running fine now.
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1992 Pearl White SVX LS-L 1991 "Red Baron" Grand Prix GTP 5spd 2002 Chevy TrailBlazer LT |
#12
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Well, the flare came back...
My brake band adjustment was apparently not successful in curing my 2-3 shift flare. Further research of the archives suggests it may be a bad TPS. I'm going to try cleaning or replacing that next. Some good info in the archives, just search for "TPS".
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#13
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Pulled the TPS out this weekend and tested it as svx_commuter recommended. Very cool How to !!!
http://www.subaru-svx.net/forum/show...ift+flare+slip Anyway, I definately have a bad TPS. My measurements consistently shows large spikes between 5 TPS increments (resistance should go up only 10 ohms but actuially spikes in 50 ohm increments). This happens early in throttle opening . After that I have about 10 increments where the resistance flatens then actually goes down! As svx_communter says "That's not supposed to happen"! Your supposed to see a steady rise in resistance...never a drop or area of no change. Good luck! |
#14
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Changed my TPS...
I swapped my TPS too... didn't test the old one extensively, but cleaned and set the "new" one to 0.50v. Shifting seems to be much better now.
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#15
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Where did you get the "new" TPS?
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