Transmission problem ST185.

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Transmission problem ST185.

Postby Trumanpriest » Mon Apr 08, 2013 1:56 pm

Right before the winter I was driving my car on the interstate and when it came time for my exit I slowed, came to a stop and tried to shift into first. The car would not go into gear, any gear. After considerable pressure, I finally got it into first but the car started running rough (like bad plugs) when I did. Nursing it home, I've since (over the winter months) replaced the slave cylinder, added the speed source extended pushrod, and used a vacuum bleeder to bleed the system. The clutch pedal still feels very soft to me though, but then again it always has.

Took the car out yesterday for a drive and she drove fine for about 5-7 minutes of shifting, driving the loop around the neighborhood etc and then the same issue started to occur..wouldn't go into gear, when finally did ran very rough. Trying to go into reverse sounded like I was going to strip out the whole reverse gear so I turned off the car and spent 3 minutes or so trying to finally get it into reverse before it would - started back up, running rough, released the brake and without gas even applied when I let off the clutch the car started moving in reverse to the extent that I could have the clutch pedal fully released and the car did not stall, just kept going in reverse. Got it back into the garage and turned off the car. Noticed at this point that with the car off and in neutral it wouldn't roll like normal. After about 10 minutes or so, the car returned to normal behavior. Rolling in neutral, free movement of being able to engage into and out of gears. Unless it is in-perceivable I'm not loosing fluid from anywhere.

What could be causing this? What are additional symptoms I could look for or things to check to diagnose this. Since it isn't constant and requires the transmission to heat up I feel that some things can be ruled out like the clutch assembly itself as if that were the issue I would expect constant issue, not just after X amount of time driving. The Clutch also was replaced about 2 years ago and the car has never had any transmission problems until the time mentioned at the beginning of this post which leads me to believe some part has outlived it's lifespan. The Master has NOT been replaced yet, I figure that is the next step - but would rather approach this from a logical...symptoms=specific part standpoint and not a replace things till it works stance. Please feel free to ask questions - Any help would be greatly appreciated.

-Mark
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Trumanpriest - 1990 ST185 | 2010 Tacoma 2.7 SR5 | 2009 Yaris
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Re: Transmission problem ST185.

Postby jaydog82 » Mon Apr 08, 2013 2:14 pm

damn dude, sorry to here about your problems. I cant hep you i have no ideas, pm klue he might know.
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Re: Transmission problem ST185.

Postby Awesome-Trac » Mon Apr 08, 2013 3:41 pm

Ok when I did a trans swap I had the same similar symptoms where sometime my car wouldn't let me shift into gear and even sometimes get stuck in gear where force/engine off/cool down was required for me to even move the car out of gear. All this happened with a 2nd gen trans, new clutch so I bled the system but problem still happened until I started looking for small leaks and long behold there was one on the clutch master cylinder leaking inside the car where I cloudnt see until I was clean my rugs inside and noticed it was moist so I'd probably check around there just to be safe
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Re: Transmission problem ST185.

Postby muskokagt4 » Mon Apr 08, 2013 3:48 pm

Clutch master sounds like the potential cause. If the seal in the master is worn than you won't get much pressure at the slave. When the problem starts happening have someone press the clutch pedal and you watch the clutch fork move. Have you adjusted the clutch to see if it helps at all?
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Re: Transmission problem ST185.

Postby New Guy » Tue Apr 09, 2013 9:22 pm

I would suspect water in your clutch line-if the master were failing, I would expect the symptoms would occur 100% of the time. I think you've got water in the line that boils as the engine heats up, causing you to lose your complete clutch throw.

Bleed the line thoroughly. If it still doesn't work, check the master.
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Re: Transmission problem ST185.

Postby DeeCee » Wed Apr 10, 2013 7:07 am

check clutch pedal cage isn't broken. Will have to stick your head under dash and push the clutch pedal in and out to see if the cage is broken or not.
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