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Transmsion Problem


T5wagon1717

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Hey.

So yesterday I was driving (getting on it pretty good) and went to a stop sign and when I accelerated it was in neutral...but really in drive. Just wouldn't engage. Turned the car off and let it cool for a minute and it worked. Then it did it again. Today I flushed the fluid, and when I got on it again, it did the same thing....but it shift fine before then......like it's not missing or anything.

Any ideas?

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Mine does this sometimes. Its been doing it more and more. But my trans does lots of weird stuff, so this may not be helpful to you.

Im replacing the engine speed sensor soon (once I get it from IPD) and hopefully that works. If not I will have to replace the shift solenoids.

One explanation I got was the torque converter slipping due to the tq converter lockup solenoid being bad. Another was the engine speed sensor causing tq converter to lock at the wrong times (sometimes not at all).

Any codes? I get no codes...

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The torque converter has nothing to do with this or most any tranny issue for that matter.

The torque converter lock-up is only activated when in 4th gear and at a cruising speed of 50mph+ on turbo vehicles and on N/A it does activate sometimes in 2nd or 3rd (cant remember which) at lower speeds.

Even if you didnt have the lock-up the tranny would work like normal with no issues.

Also a torque converter can not slip.

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Hey.

So yesterday I was driving (getting on it pretty good) and went to a stop sign and when I accelerated it was in neutral...but really in drive. Just wouldn't engage. Turned the car off and let it cool for a minute and it worked. Then it did it again. Today I flushed the fluid, and when I got on it again, it did the same thing....but it shift fine before then......like it's not missing or anything.

Any ideas?

Sounds like a busted trans or a PNP switch.

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Mine does the same thing! I know when it is going to happen because when I slow down from say 40 to 45 mph if the transmission downshifts harder than normal I know it is going to go into this mode where I will have to elevate the rpms to get it to engage. If this is a transmission issue I will junk the car(264,000 miles). If not, I have some other repairs to do, but I don't want to throw good money after bad. Anyone with any ideas on a fix?

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  • 2 weeks later...

So here is the odd thing

Went out and played with it today. It's slips bad...to were it's like in neutral...then if I turn the car off for a minute, and turn it back on, it will work for a second....the. Stop.

Could this be a sensor? Only ask because it seems of it was broken (mechanically) it would Just not work.....

Mine does this sometimes. Its been doing it more and more. But my trans does lots of weird stuff, so this may not be helpful to you.

Im replacing the engine speed sensor soon (once I get it from IPD) and hopefully that works. If not I will have to replace the shift solenoids.

One explanation I got was the torque converter slipping due to the tq converter lockup solenoid being bad. Another was the engine speed sensor causing tq converter to lock at the wrong times (sometimes not at all).

Any codes? I get no codes...

No codes for me either.

Damn. Get the sensor? Did it help?

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I'm not 100% on this but it sounds more like a cracked drum.

The drum is what surrounds each clutch and is a sealed unit. When that clutch pack is activated, hydraulic pressure is applied to that clutch compressing it together. BUT if the drum is cracked then you will loose that hydraulic pressure, thus feeling like neutral!

Since it works sometimes, I would guess that the spike in pressure has enough time to engage that clutch pack and move the vehicles but as the pressure decreases you will go back into "natural".

That's just a guess though!

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I'm pretty sure it's a bad solenoid (solenoid number 2 to be exact).I have read a lot about it and that seems to be the cause of the problem (my car also does it from time to time).

Is it fatal? No. Apparently you can drive like that for a long time. I have been driving it like that for 2 years now.

Can you fix it? As far as I can tell it's not worth it. To replace the solenoids you have to pull the transmission and replace the housing. Might as well rebuild the whole thing, or just get a new car.

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Well the distance I could drive between turning the car on and off has dropped dramatically. Idk what it is, and of it's big I'm going to swap an m56 in once I get some money. Is there a way to test to see what this could possibly be?

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Does it work at all if you put it in 3 or L? If yes, forget replacing the transmission - just take apart, clean, and re-align your PNP switch!

Reverse goes in with a clunk probably because you're not letting the idle calm down before moving the car into gear.

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