SMT PROBLEM WONT GO INTO GEAR

748 Views 34 Replies 4 Participants Last post by cyclehead, 3 d ago

Mrvictorywins

Discussion Starter · 1 mo ago

Hello everybody,

I have a 2005 SMT.

The car turns on great. When I open the driver door the pump makes a sound for about 7 seconds (which according to the forums means that the pump is good). There are no visible leaks at all. The liquid is at the right level for the pump.

It will not shift into gear. It'll stay in neutral then blink in neutral. I noticed when we push the cad it'll reverse and go into first. Once I'm in first if I try to go to second it'll work but make a horrible metal scraping noise.

there are no dash lights. A friend told me it may be a sensor issue that is not the HPU.

Does anybody have some advise as to what may be the problem and what to try fixing first?

thanks

21 - 35 of 35 Posts

suoiruc

· #21 · 18 d ago

That sensor is probably bad since it was shifting fine with the engine not running before the sensor swap. And that would explain why it wasn’t clutching properly when that sensor was in the clutch position.

Mrvictorywins

Discussion Starter · #22 · 17 d ago

Hey Guys, update: so I took off the clutch stroke sensor. I opened it up and it seemed fine. But what I noticed was it seemed like somebody else already opened it and resealed it.

I tried to the pencil method and it did not work.

I placed the shift stroke sensor where it was originally and I placed the clutch stroke sensor where it was originally.
here Is what happened: May 21, 2023

before I tampered with anything, before the ignition was on it would shift gears. Now it'll just beep saying it's not in neutral im assuming? (This may be because it is stuck in 4th gear?)

I seem to have lost the ability to shift gears.
I am leaning towards buying a new position sensor and seeing if that works. On the word doc it also states I can send it to one of you guys for repair.

Any ideas?

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Mrvictorywins

Discussion Starter · #23 · 17 d ago

Mrvictorywins said:
Hey Guys, update: so I took off the clutch stroke sensor. I opened it up and it seemed fine. But what I noticed was it seemed like somebody else already opened it and resealed it.

I tried to the pencil method and it did not work.

I placed the shift stroke sensor where it was originally and I placed the clutch stroke sensor where it was originally.
here Is what happened: May 21, 2023

before I tampered with anything, before the ignition was on it would shift gears. Now it'll just beep saying it's not in neutral im assuming? (This may be because it is stuck in 4th gear?)

I seem to have lost the ability to shift gears.
I am leaning towards buying a new position sensor and seeing if that works. On the word doc it also states I can send it to one of you guys for repair.

Any ideas?

suoiruc

· #24 · 17 d ago

So I see three possibilities. Either that sensor is bad (most likely) or that sensor didn’t get installed correctly during the swap (Tip- put selector shaft into 4th gear to aid in installation) or it needed a relearn to accept the new values of that sensor (least likely).
I would put a New sensor in there or a known good one. Make sure you put it in correctly (refer to my tip above). See where you’re at, report findings or if it still shows 4th, do a relearn through Techstream.

Mrvictorywins

Discussion Starter · #25 · 13 d ago

Hey guys update: I installed the new sensor. When I turned on the car it still said 4th gear. I could not shift the gears and the car wouldn't start.

I relearned the TCU using tech stream and the car will start now. I heard the car changing gears and the pump working. Then towards the end of the relearn where it says you should see the neutral symbol I did not. I did as instructed and turned off and on the car but it did not work.

i am unsure if the selector shaft is in the right place. It is hard to tell but I believe I put the shifter in neutral before doing the relearn as it moved in and out.

Now when I installed the sensors I am feeling my way from the side of the car as I do not have the tools necessary to lift the car completely and get completely under it. I just have one jack and stands. I put the sensor arm inside the cavity and screw it down in place and plug in the cable. Is there something I'm missing here?

also here are are some videos of the car turning on but having no neutral symbol showing. Also a strange sound coming from the engine bay. Not sure if it's normal.

youtube.com

May 25, 2023

youtube.com

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suoiruc

· #26 · 13 d ago

Seems like you’re getting closer. Maybe both of the original sensors were bad? I’m guessing that the new sensor has corrected one of the problems. You could try another relearn or a battery disconnect. Is the selector shaft in neutral (the hole should be straight up and down) at this point?

cyclehead

· #27 · 12 d ago

Be really careful installing the position sensors. It’s easy to miss the correct slot and destroy the position sensor. Usually you must engage the slot, then rotate the sensor housing as you align the two mounting holes (while fighting the spring tension).

Reactions: 1

suoiruc

· #28 · 12 d ago

Mrvictorywins said:
Now when I installed the sensors I am feeling my way from the side of the car as I do not have the tools necessary to lift the car completely and get completely under it. I just have one jack and stands. I put the sensor arm inside the cavity and screw it down in place and plug in the cable. Is there something I'm missing here?

It might be that you’re not getting the swing arm into the appropriate slot. Just putting it into the cavity is likely not adequate. As Cyclehead mentioned, you should have to twist the sensor against the spring tension if it went in correctly. If you just put it in the cavity and the bolt holes lined up, then that wouldn’t be right. I t will help to have the selector shaft in 4th gear when installing it.

In case you weren’t aware, 4th gear is rotating the selector shaft clockwise from the neutral position.

Reactions: 1

Mrvictorywins

Discussion Starter · #29 · 9 d ago

Hey guys update: I got the swing arm into the right slot for both of the sensors. I did a relearn with tech stream.
When it's off I can change gears. When the car is on it wont go into first. I had my friend push my car and it went into first, second, third, fourth. Now when the car stops it has trouble going into first again.
When I change the gear into first or reverse from a stand still it makes this large crunching noise.
I ran techstream to see new codes and there are none but these two lights are on the dash.
I ran it again and this is what came up (see photo)
I'm stumped guys.

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triz

· #30 · 9 d ago

Your clutch sensor is bad. You have some other issues probably. Can't see your photos. Send me both units. I'll rebuild them tell you what's wrong and you can drive.

Mrvictorywins

Discussion Starter · #31 · 9 d ago

But I just replaced the bad sensor. Tech stream is not showing any codes for a damaged sensor anymore. I thought maybe it would but the clutch solenoid? It makes this horrendous scraping sound when it tries to get into 1st but especially when trying to go into reverse. But again once the car is moving it'll change all the gears.

suoiruc

· #32 · 8 d ago (Edited)

See if the clutch fork is moving. If it is then probably not the clutch solenoid. If the fork never moves, then probably the solenoid. If the fork is moving then it’s a clutch friction point problem (assuming the clutch sensor is good). If this is the issue then it might be the trans input speed sensor. If it’s not that then the clutch is dragging.
Edit: Did the NEW sensor get installed in the clutch position? If not, put the new one in there and do a relearn through Techstream. This should rule that out as a possibility. I think we ruled out the clutch solenoid earlier so that should leave either the input speed sensor or a bad clutch after testing the new clutch position sensor.

Reactions: 1

Mrvictorywins

Discussion Starter · #33 · 3 d ago

Hey guys so I was able to confirm the clutch fork does move. When it went into reverse it made a clunk noise that was pretty loud. Not really able to hear it through the video though.

and yes I did put the new sensor in the clutch position and did a tech stream relearn

suoiruc

· #34 · 3 d ago

Things definitely need lubed in that area. I can’t tell if the squeaking is coming from the clutch fork to cable wedge, the fork pivot, or the clutch itself.
Next, I would probably inspect the trans sensor and associated wiring for damage. You might want to pull it and clean it off but you’ll have to plug the hole (finger?) or fluid will come out.
BTW, how many miles are on this clutch?

cyclehead

· #35 · 3 d ago

You can hold your thumb over the sensor hole while you wipe it clean.

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