Clutch Pedal Getting Sucked to Floorboard - Help!

Howdy TW

I was hoping maybe someone had run across a remedy for this issue. I've read some posts here and there, but found no answer to this one specifically. This is a 2003 V6 X-cab 4x4 with 150,xxx miles.

What's happening is when I push the clutch pedal in, sometimes it stays down. After playing with it a bit, I've found that it has some habits. It only does it when the truck is running. When the pedal is depressed maybe halfway, sometimes it's as if a suction or motor pulls the pedal in the rest of the way and holds it with some pressure to the firewall. That seems to happen most commonly in 1st gear. Other times it gets stuck about halfway and I can kick it back up with my foot. However if it goes too far, it gets sucked back in.

I took a quick video to illustrate what's going on. Again, sometimes it does it like this, sometimes it works but feels funny, and sometimes it goes to the floor on its own and I have to remove my belt & reach up under the dash to pull it back...not exactly ideal. Actually no more driving it until I get this figured out. It gets unfun real fast in traffic.



I've been sucking out the old fluid in the reservoir, which was pretty dark, and replacing it and that seems to make a difference with the truck off, but it's still doing this. Maybe this is a shot master cylinder? It did this a couple sporadic times last year but it never happened again. Now it's chronic.

Thanks in advance!

 

I've been told it's the master cylinder. Mine does the same thing. Clutch doesn't push back all the way out and sticks at about halfway. I always have to push it back up with my foot.

 

If it's doing the same thing I'd get it parked soon. My truck's disabled now - can't even get it back in the garage. Glad I got it back home when I did - that was close. That would have been a tow.

 

Personally I'd change the master and bleed the system and go from there

 

Yeah, that's the plan. Time to get shopping.

Err, forgot to add this is with the truck on or off - doesn't matter anymore.

 

Just make sure nothing is physically blocking the pedal from returning .

Go for Aisin hydraulic parts quite a few made in China parts around of cheap quality

Other then the pedal issue does the clutch still work or is it impossible to get in gear??

 

Naah, it won't go in gear. Not running anyway.

I've been reading around and read that Aisin makes the OEM part. I'd prefer to go OEM here, but time is a factor. My pushbikes are my only transportation 'till I get this fixed.

Should I mess with the slave too ya think? Thought while was in there...

 

Change them both !!

 

Probably not a bad idea. Thanks for the help.

A little good news at least. I got to thinking maybe I'd give it another go today once everything had a chance to cool off. Right off the pedal went straight to the floor. However I pulled it back out and just took a good quick stab at it and it engaged! I opened the garage, started it up, and did the same. It worked just long enough to get the truck into the garage! That's gonna be a big help as I can work on this thing in here and not outside on the sun-soaked black asphalt just outside. I'll take it!

 

Definitely...it's been my experience that generally when either a slave or master cylinder fails, the other isn't far to follow.

Change them both (don't settle for anything other than Aisin), do a proper bleed/adjustment and it should be good for a long while.

 

I had the same thing happen. I changed the slave first because it was cheaper. Didn't make a difference. Changed the master and that solved all problems.

Get OEM for sure. And measure the exposed threads before the clevis and set the new one to the same length.

 

The clutch's actuating design is completely free frkm any othwr system in the truck. So unlike the brake master cylinder, the clutch is completely independant from any other syste in our trucks. there is othing causing the clutxh to behave that way except for the clutch co ponents Itself.

I think tge most recent issue similar to yours is the retuen aprkng on the clutch pedal is tweaked in sucb a way that it actually sprkngs it into the floor. Try doing the clutch spring mod. Should be a sticky

 

Yeah, I've read about that spring thing, but gonna do this first and see what happens. Just ordered up some parts (

$49 Aisin CMT 030 OE Matched Clutch Master Cylinder - Compatible with Select Toyota T100, Tacoma

Aisin CMT 030 MC and CRT 014 Slave) - should be here some time Wednesday. $85 in so far. After buying fluid and a line wrench, if all goes well, this should be about a $100 job.

I woke up to a dislocated shoulder this morning so doing this in a couple days should be tons of fun.

 

Your videos definitely show a hydraulic issue.

 

Do we want to know how you dislocated shoulder in bed ??

 

Heh, not much of a story I'm afraid. Once you tear your labrum, unless you have surgery to repair it, this sort of thing can happen. If I get my arm in just the right position then rotate it just the right way, it will pop out of socket pretty easily. Apparently I did that in my sleep. Again. This makes twice I've woken up like this...once a couple years ago. Big fun I tell ya.

Problem is that I understand that the surgery to correct it carries a good bit of risk and requires a 6 month recovery. That recovery is supposedly pretty awful & you have to do PT all the way through. If I just did my PT now, this might not happen, but it's hard to work it into a life routine. I'm usually pretty good about it for a while after a reminder like this though. This is the 5th time in total it's come out on me. The others required a good bit of force to knock it out.

 

Had the exact thing happen to me. It was the master cylinder....so i replaced both; better replace both cause one will follow shortly. No probs since......go with aisin.

 

Thanks for all the help y'all. It was one of those. Not sure which as I didn't dissect them.

After buying a line wrench, which I highly recommend, and some fluid I spent right at $100. And 3 hours of my time. Not a bad job really. I have a little hydraulic kit here I use to do mostly brakes, but it came in handy for this stuff - mostly to catch old fluid.

I think a tow to a shop and leaving it to them would have been $500 or better. And I probably wouldn't have had it back by now. And I would wonder. It was a little bit of a bitch getting the slave in with a jacked up shoulder, so should be that much easier for someone not blessed with that talent.

Just a few tools needed for this job:

12mm deep well socket & driver & extensions
12mm shallow socket
10mm line wrench
12mm open-end wrench to set pedal adjustment - adjustable would work
Small screwdriver or something to remove clip on pedal pin
Small magnet on a stick came in handy

plus

Loctite Blue
Brake Fluid
Paper Towels
Plastic bag to catch drips

$49 Aisin CMT 030 OE Matched Clutch Master Cylinder - Compatible with Select Toyota T100, Tacoma

Aisin CMT 030 Master Cylinder

$35 Aisin CRT 014 OE Matched Clutch Slave Cylinder - Compatible with Select Toyota 4Runner, T100, Tacoma, Tundra

Aisin CRT 014 Slave

I'm not sure why, but part of this is ground off and covered with some sort of ink. There's a logo there on the stock one. A little brake fluid took it right off. I gotta go back and touch that up.







They both seem to be identical to the OEM parts...very solid. No complaints other than the ground down part on the slave.

I found watching this video first helpful



Now to go get the windshield fixed. If I could do it myself I would, but I'm sure that's a bad idea. Gonna leave that one to the pros.