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#16
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that sounds like what my car does
2rd to 3nd slip and most of the time right after I take a turn. Its probly not related. the small car shift kit helps but did not fix it on my car. dealer said to change the screen inside of the trany. So i'm going to try it as sone as I get the screen from Kerven Subaru.
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2005 Legacy GT 2002 WRX VF22, Pinks, big TMIC and turbo back 128,*** miles My WRX's Cardomain Page |
#17
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I also have the external filter on order. I'll do them both at the same time.
And winter's here in a week or so. Collins |
#18
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I seem to recall that several people have said that cleaning/replacing the Throttle Position Sensor can put an end to shift flares. Apparently, when it gets dirty, the tranny can think that the motor is at idle when its not, and it tries to shift as if the car where at/near idle. Supposedly, its pretty easy to clean.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#19
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Brand new 5 days ago... set to 0.500 VDC Thanks. Of course if you suggested chicken blood at this point I'd be cruising the barnyards
Collins |
#20
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Quote:
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#21
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Fixing The TPS
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You guys should have on hand TPS units which you have replaced and which you could experiment with. When I had mine out I was short of time and needed the car so did no more than wash it out. It appeared to me that it would come to pieces if the return spring is slipped out. It would be necessary to check the number of turns wound on the spindle before doing so in order to put it back as was. However the spring pressure would not be that critical. Inside there will be a resistance element which can be dirty, or worse worn. Also a spring loaded contact, fixed to the spindle, will travel around the resistance. If spring tension is weak this will cause poor contact and a problem. However it should be possible to restore lost pressure with a little careful bending. You should also check for reliable contact/connection between the moving wiper and the associated outgoing terminal. If you can find the time to check on what I have described and report back you will be doing a service to members as a " how to fix the TPS " could save money and who knows the supply of spares may become exhausted. You guys have the knowledge to work out how the thing works and it will all be obvious to you when you examine its guts. Please let me know how you get on. Thanks -- Trevor.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#22
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I have the Smallcar shift kit installed and it did not fix the lack of engine braking in 3rd gear. As other people have mentioned, if the resistor is disconnected, the engine braking in 3rd gear is non-existent. I played with the setting screw in the shift kit and found that it make no difference for this problem. The shift kit reduces the flares, but does nothing to fix the 3rd gear engine braking.
I would like to keep the shift kit installed, but I need to be able to shift down to 3rd gear when descending the mountains coming home from ski trips. Either that or I ride the brakes and risk overheating them. WWII, did adjusting the brake band fix the 3rd gear engine braking problem? Cheers, Matt |
#23
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Not a thing... I'd say there has to be a certain level of resistance in the system with the throttle closed to "lock" 3rd gear. The shop manual is great in explaining the entire tranny but the repair is under warrantee and the car's going back into the shop on Monday. Sheeze
Collins And to Trever... the new TPS didn't change a thing so I'm not sure I'll find a problem with the old one. I'll look tho'... I'm scheduling a short break in early 2005 |
#24
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Collins,
The object of the exercise was to find if the TPS can be pulled to bits and put back together. It would be sensible for someone who has a suspect unit to try this in case the unit becomes damaged in the process. I hope you can assist. Thanks, Trevor.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#25
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Trevor,
I can be disassembled, at least partially. SVX_commuter did a write up in the How-To's http://www.subaru-svx.net/photos/files/How-To/1333.htm Is this the kind of info you were looking for? |
#26
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It looks like it's sealed to me...
I've removed the return spring and the small cap from the "inside" of the unit but it looks to me like the internals are assembled from the rear and sealed/glued together. I'll post pictures as soon as I can. Collins |
#27
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Quote:
What is more disturbing and greatly concerns me is the stated instructions covering setting the TPS. The reference used applies to a vehicle on which the original setting may or not have been correct. The proper method, as per the official manual, is to set the TPS based on voltage ( O.5 V. ) at closed throttle. This can be very easily accomplished using the method set out in an instruction in the " How Too ". An analogue signal is involved and it is important is that the correct signal voltage is delivered at closed throttle. An approximate resistance measurement can not guarantee the proper setting and working on the basis of a measurement, not proven correct, is to say the least more than suspect. I note that the the author prefers an inaccurate method so as to prevent burnt hands. I would suggest that anyone serious with maintenance works on a cool engine and this no reason to compromise accuracy. The time consuming method suggested for checking resistance is time wasted. Smooth operation is easily confirmed more simply. An absolute check requires a 'scope or as a minimum a meter with a bargraph.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! Last edited by Trevor; 09-04-2003 at 09:15 PM. |
#28
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Quote:
Don't go to the trouble of the pictures, as I have got the PICTURE ? ! I had hoped that the spring was locking the spindle in place and all might come to bits with it out, but sadly this does not appear to be the case. I have never given up on repairs because something is sealed up and manufactured as a throw away item. Any chance of cutting open the case ? Even if the first opened is a write off, this could be worthwhilke if a method of opening and repair is disclosed. Thanks again, Trevor.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#29
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Careful... It's 0.500 VDC, not 5 volts but being an EE (by edumacation anyway) I understand your concern.
Does anyone who's VERY familiar with the 4EAT think that overfilling could cause the flair? Once the flair happened after the rebuild I checked the fluid (too high) and the shop said they normaly overfill ALL overdrive transmissions (this DID set off BIG warning signs) Collins BTW I'm going to have to cut the TPS open to get to the windings and sweeper only the return spring is external From the look of it I'm suprised that cleaing the unit actually worked. |
#30
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Avast!
Dang Trevor, could you wait till I replied to reply.. I mean really...
Harumpfff, Collins It's late, and I'm drinking rum to celebrate talk like a pirate day! www.talklikeapirate.com Arrrrrrrr |
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