GPX 4speed gearbox issues

Got a problem with your FTO? ask about it here

Moderators: IMC, Club Staff

Post Reply
User avatar
Posts: 41
Joined: Sat Apr 06, 2013 12:38 pm
GPX 4speed gearbox issues

Post by flateric » Mon Apr 10, 2017 11:01 pm

Hi Guys,

I have started making miles with my GPX after a couple of years doing repairs / refit but i'm not really confident that my 4speed tiptronic is working correctly.

It sometimes bangs into drive like if the engine would turn itself around in the engine bay. Sometimes shifting is going very smooth. The banging already costed an rear engine mount and i don't want to mess up anything else...

The other issue is that i'm noticing vibration while accelerating between 20mph to 50mph. At 80mph it's starting again at high frequency with a humming sound and it won't stop until you take your foot of the gas. Could this be the torque convertor ?

The color of the fluid is red and has been changed 1500 miles ago.

can you advise ?
if it doesn't brake just hit the gas
Audi A6 avant 1.9 tdi - 175HP
Honda CRX 1986 - 130 HP
Mitsubishi FTO 1996 - 200HP

User avatar
Posts: 2080
Joined: Mon Jul 11, 2005 5:00 pm
Location: Melbourne
Re: GPX 4speed gearbox issues

Post by Nacho » Mon Apr 24, 2017 5:35 pm

First thing to check is the type of transmission fluid whether it's suitable for the FTO and see if it will go away

Unfortunately when I encountered banging it was one of two things:

Speed sensor were on the way out and tranny was banging in between shifts and then eventually going into limp mode

Other time was torque converter was on the way out and it was only a matter of time. Hopefully for your sake it's the other ones
You never get a second chance to make a first impression.

User avatar
National Vice President
Posts: 9525
Joined: Fri Jun 24, 2005 5:00 pm
Location: Utopia
Re: GPX 4speed gearbox issues

Post by dstocks » Mon Apr 24, 2017 9:56 pm

I have 2 spare tip boxes in the shed. If it comes to needing a replacement, you can have one for $250 + freight(if required)
Complete FTO (
    If you are trying to contact me and not getting a quick answer, its because im disorganised. Hassle me and ill get back to you

    Grease Monkey
    Posts: 115
    Joined: Sat Sep 21, 2013 9:35 pm
    Re: GPX 4speed gearbox issues

    Post by evo-gsr » Tue Apr 25, 2017 6:24 pm

    Bargain ^^ !!

    Post Reply