Transmission help: Slippage? - Toyota Nation Forum : Toyota Car and Truck Forums

xtremeskier97 · 04-27-2008, 03:50 PM

Im needing help with diagnosing a transmission problem. It only slips RIGHT when you start the car from being cold and try to drive it right away. Doesnt matter whether Drive or Reverse (havent tried L or 2). But, if I let it sit running for like 15-20 seconds before trying to drive off, its fine. Shifts smoothly into all 4 forward gears.

Now I know you're supposed to let the car warm up first blah blah blah....but I dont do this all the time, only when in a VERY big hurry. I usually let the car run for a couple minutes from cold start before driving off. But this isnt right. It shouldnt slip like this.

So...what can cause this? Im talking about the 93 XLE V6 btw...the one I just got.

Thanks guys!

Rob_0126 · 04-27-2008, 04:03 PM

Before telling you your tranny is heading out, have you checked the fluid level? Have you ever had the filter in the tranny replaced?

xtremeskier97 · 04-27-2008, 04:22 PM

I just got the car less than 2 weeks ago. I havent done anything to it yet. The previous owner had it rebuilt at around 180,xxx miles and it has 227,xxx on it now. His log book he gave me of maintenance doesnt show any ATF replacement since then. Maybe I just need to drain, replace filter/gasket, and refill it a few times?

Rob_0126 · 04-27-2008, 04:49 PM

Id check the fluid level. As for draining the pan, putting a filter on, and refilling, Id ask one of the techs here. Ive heard bad things about drain and refills on clogged up trannies.

BlueFusion6851 · 04-28-2008, 08:39 AM

Yeah ^ You think it slips bad now? Wait until you drive after a drain and refill.

Hajoca · 04-28-2008, 10:36 AM

If fluid level is ok, ( check in park, engine running, transmission HOT).

The solenoid that control the clutches in the transmission may be sticking.

Drain and fills would be slow. Try that with a bottle of Seafoam or (Transtune), that should do the trick.

AutoRX is another option to look into.

xtremeskier97 · 05-03-2008, 04:36 PM

I have another question...if the transmission is slipping and you keep pressing on the gas, would the rpm's keep going up and you just wouldnt go any faster, or would it stay about the same rpm? Cuz I did it once by mistake, but I dont think the rpm's went up.

Thanks!

Rob_0126 · 05-03-2008, 10:21 PM

Quote:

Originally Posted by xtremeskier97

I just got the car less than 2 weeks ago. I havent done anything to it yet. The previous owner had it rebuilt at around 180,xxx miles and it has 227,xxx on it now. His log book he gave me of maintenance doesnt show any ATF replacement since then. Maybe I just need to drain, replace filter/gasket, and refill it a few times?

You know whats odd, My car did this this morning, after I adjusted the TV cable. I let it sit for an hr or so, cranked it up, started to back out in reverse, and the car didn't want to move much. After about 20 sec of moving, it started acting right.

So, after a quick trip to the store, I adjusted the TV cable tighter, and wahlah, nothing like it was doing yet.

My point, assuming I dont have this anymore, adjust the TV cable 1 thread tighter.

Ill keep you informed because Imah drive it tomorrow morning to town.

btw, i drained the fluid twice 2 weeks ago(1st drain/refill, 2nd, seafoamed, drain/refill).

Remember, only time it did this was after a adjusted the TV cable looser(too much obviously).

However, my tranny shifts from 1st - 2nd a little firmer than I like. The rest are fine. Ugh, electronics are a pain to figure out.

Might break out the Ohm meter tomorrow and whip out the toyota manual pdf... (sorry, like to ramble when Im tired)

xtremeskier97 · 05-03-2008, 10:28 PM

Wait...what is the TV cable? I seriously thought you were talking about the Television at first! LoL

Rob_0126 · 05-03-2008, 10:59 PM

Quote:

Originally Posted by xtremeskier97

Wait...what is the TV cable? I seriously thought you were talking about the Television at first! LoL

http://www.toyotanation.com/forum/sh...d.php?p=485045

That ought to help explain better than I can.

Robert

xtremeskier97 · 05-04-2008, 01:40 PM

Ive read that before and understand it completely, but I still dont know what you are calling a TV cable.

Rob_0126 · 05-04-2008, 02:26 PM

The cable that adjusts the shift points and pressure in the transmission is called TV(throttle valve) cable.

'_' · 05-04-2008, 04:37 PM

I had the same problem on my 2000 i4. On a cold day when I started it up and began to drive off, the tranny slipped. Once it was warmed up, it drove normally and everything seemed fine after that.

Rob_0126 · 05-05-2008, 12:54 PM

Update: My transmission shifts smooth again. The only things I did was:
-Replaced 3 vacuum hoses,
These 2:

Going to This Box:

And replaced this Hose as well:

-Adjusted the TPS with a filler gauge and Ohm meter by the toyota manual pdf.

Now it shifts smooth just like it came from the factory.

Not sure which one of these things did the trick because the TPS was pretty much on the money anyways when i checked it's previous position.

So possibly one of these vacuum hoses had a leak causing havok on the tranny for some reason.

If anyone has a clue why this worked, let me know.

Black95Cam · 05-05-2008, 05:49 PM

Quote:

Originally Posted by xtremeskier97

I have another question...if the transmission is slipping and you keep pressing on the gas, would the rpm's keep going up and you just wouldnt go any faster, or would it stay about the same rpm? Cuz I did it once by mistake, but I dont think the rpm's went up.

Thanks!

yeah.. it suck especially if its a manual.. you'll be smelling the clutch after you get out.. hahaha