Mohsin Univrsal

Hi All Honda-tech users i need some help i recently swapped honda D15B 3stage with CVT M4VA Tranny in my civic 2000 swapped like a charm everything is working perfectly but its judders every time when i forward or Reverse it i look for trouble codes there is no codes stored in ecu then what does it mean ?? i used honda genuine cvt fluid . my question is can this happen due to some wiring issue or this is tranny issue or something else any help will be very kind thanks in advance .

Mohsin Univrsal

94EG8

Mohsin Univrsal

Bump

94EG8

It's most likely a bad start clutch for the CVT trans. There is an old TSB on it which I can't seem to find right now, but if you go to your local Honda dealer than can probably dig it up and print you a copy. Basically though what it says is shuddering/juddering during low speed acceleration is caused by a bad start clutch.

slowcivic2k

Replace the start clutch and the fluid.

Mohsin Univrsal

what do you mean by start clutch ? is complete transmission itself?

Mohsin Univrsal

what is start clutch basically ?? is it inside the transmission?? its a separate part can be replaced ?? or i will have to get the complete cvt? and as i said i recently swapped this setup thats why i used honda brand new cvt fluid ...
you sure this problem is not related with any kind of wiring issue?

94EG8

The start clutch is basically a clutch pack like those found in a conventional automatic transmission, but in this case it replaces the torque converter. You can replace just this part but you have to pull the transmission in order to do so:

#1 in the diagram:



The current part number is: 06220-P2M-305 they're around $700 US.

If you do not have the TCM wired in correctly then that may be the cause of your trouble as well. However it is very common for the start clutch to go bad.

Mohsin Univrsal

thank you i got it and i am not sure about the wiring but if its a wiring issue it should have any trouble code but its clear so you sure its a start clutch issue?? then i will replace the whole tranny used one.

94EG8

Depending on what is and isn't wired for the TCM it may not throw any trouble codes.

I'm not sure it's the start clutch, but it is quite likely. It's also likely another used transmission will have the same issue.

Mohsin Univrsal

alright i will replace it 1st then see if its performing like before then i will recheck the wiring as i have already checked but i think wiring is fine