3rd gear crunch

This section is for technical Q & A
Please try the search function before starting a new thread.
Forum rules
Many subjects will have been discussed before. Please try the search function before starting a new thread.
Check in the Know Your 2 as the information you need may already be there.
Important ! - Please make your topic title as descriptive as possible . titles with just "help" generally dont get as many answers as a title that points to the problem
Post Reply

Topic author
Alimr2786
Posts: 7
Joined: 06/05/20 3:24

3rd gear crunch

Post by Alimr2786 »

I have a 1994 n/a mr2 and only in 3rd gear when down shifting it tends to notch very annoying, im thinking its the 3rd gear synchro? Is there anything else it could be?
Many thanks



User avatar

benckj
Posts: 280
Joined: 05/04/06 1:00
Gender: Male
Years of MR2 Ownership: 5
Location: Alexandra, New Zealand
Been thanked: 1 time

Re: 3rd gear crunch

Post by benckj »

Gear oil
Cable bushes
Engine mounts
Square bush
Synchros or bent fork......


Topic author
Alimr2786
Posts: 7
Joined: 06/05/20 3:24

Re: 3rd gear crunch

Post by Alimr2786 »

Many thanks buddy i will investigate

User avatar

chrisE
Full Member
Full Member
Posts: 223
Joined: 15/02/05 0:00
Gender: Male
Years of MR2 Ownership: 14
MR2's Owned: 2
Real Name: Chris
Location: Swindon
Has thanked: 5 times

Re: 3rd gear crunch

Post by chrisE »

Start with your cable bushes as they're the first things to wear-out and the easiest to replace.
I didn't do it.


Topic author
Alimr2786
Posts: 7
Joined: 06/05/20 3:24

Re: 3rd gear crunch

Post by Alimr2786 »

Any ideas where I could get some gear cable bushings from? Many thanks

User avatar

MR2DI4
Posts: 1268
Joined: 20/04/11 23:18
Gender: Male
Years of MR2 Ownership: 22
MR2's Owned: 1
Real Name: Carl
Location: Auckland >>> New Zealand

Re: 3rd gear crunch

Post by MR2DI4 »

Replace the oil in the transmission immediately, it never gets replaced.

The gearbox will last forever if the oil is replaced every 60,000km with Castrol Syntrax 75W-90.

Over 230,000km on mine and no issues at all with shifting.

User avatar

jimi
Administrator
Administrator
Posts: 4099
Joined: 17/05/04 1:00
Gender: Male
Years of MR2 Ownership: 16
MR2's Owned: 1
Location: Glenrothes: The Kingdom of Fife
Been thanked: 15 times
Contact:

Re: 3rd gear crunch

Post by jimi »

Black is not a colour ! .... Its the absence of colour
Image


Topic author
Alimr2786
Posts: 7
Joined: 06/05/20 3:24

Re: 3rd gear crunch

Post by Alimr2786 »

Thanks jimi


Topic author
Alimr2786
Posts: 7
Joined: 06/05/20 3:24

Re: 3rd gear crunch

Post by Alimr2786 »

So abit of an update, ive changed the gear cable bushes (brd bushes) and the gearbox oil, one of the old buses in the centre where it slides over the linkage was oval in shape and had slight play but despite replacing the bushes and changing the gearbox oil there is still the same notchy/crunchy noise it doesn’t sound like a crunch but more a notch only when dropping from 4th to 3rd gear
Im just going to live with the notchy noise
Many thanks for everyone’s help


MRHAPPY62
Full Member
Full Member
Posts: 1293
Joined: 19/02/12 15:27
Gender: Male
Years of MR2 Ownership: 8
MR2's Owned: 3
Real Name: JAMIE
Location: WEST SUSSEX
Has thanked: 3 times

Re: 3rd gear crunch

Post by MRHAPPY62 »

did you check the square bronze bush at the linkage ?
MK2 3sge Uk sold.
MK3 Chilli red sold.
MK2 Smg Gltd Super Edition now with V6


Topic author
Alimr2786
Posts: 7
Joined: 06/05/20 3:24

Re: 3rd gear crunch

Post by Alimr2786 »

No i need to check that bush where about is this bush located?


MRHAPPY62
Full Member
Full Member
Posts: 1293
Joined: 19/02/12 15:27
Gender: Male
Years of MR2 Ownership: 8
MR2's Owned: 3
Real Name: JAMIE
Location: WEST SUSSEX
Has thanked: 3 times

Re: 3rd gear crunch

Post by MRHAPPY62 »

look in the bgb its at the gearbox end between the linkages you can rotate it ,rather than replace it.
MK2 3sge Uk sold.
MK3 Chilli red sold.
MK2 Smg Gltd Super Edition now with V6


Topic author
Alimr2786
Posts: 7
Joined: 06/05/20 3:24

Re: 3rd gear crunch

Post by Alimr2786 »

What is bgb?

User avatar

peteV6R5
Posts: 2773
Joined: 13/08/07 13:06
Gender: Male
Years of MR2 Ownership: 12
MR2's Owned: 2
Real Name: Pete
Location: Stratford upon Avon
Has thanked: 2 times
Been thanked: 5 times

Re: 3rd gear crunch

Post by peteV6R5 »

Alimr2786 wrote:
09/06/20 23:56
What is bgb?
Big Green Book - toyota service manual and electric diagrams
https://www.mr2oc.co.uk/know-your2/mk2/ ... bgb-s.html


also check your front and rear engine mountings, if worn the engine can rock too far and not allow smooth operation of the gear link cables, this can cause notchiness or none selection (if mountings are really worn)
Image
Highland Drive 13/14/15/17/18/19
JAE 07/09/10/11/12/13/14/15/16/17
Japfest 09/11/12/13/16/19
Wales runs 14/15/16/17/18

Post Reply

Return to “MK2”