Gearbox issues
Discussion
Hey guys
Im hoping someone can help me diagnose an issue im having with the gearbox on my 2001 Alfa Romeo 147 (1.6).
Basicly it just started yesterday when (coincidentally) I was driving in to get my MOT. The gearbox has always been a bit "loose" since i bought the car and 4th has been a tad sticky in the past. However as i was driving along i popped into third and my gearbox just popped out of gear again. I try to reingage and it ground a bit so i gave up and went to 4th.
Upon further testing i found that if 0 load is on the gearbox it will stay in third however if you apply the slightest accelerator or the engine goes close to idle (at about 20mph in 3rd) the gear will pop out and if you hold it in it will grind. I've got reletivly little experience with gear boxes but ive read that it could be either some rubber bushes which guide the selector in (an aparent easy fix), the syncromesh on 3rd gear (gear box out for a 500quid+ rebuild) or missing teeth on 3rd gear (again gearbox out for 500quid+ rebuild).
Anywho its late here at the moment but i recorded a video of me trying to pull the car away from stationary in each gear. All gears function and pull is felt except from 3rd which judders back into neutral and grinds when held.
Video:
https://www.youtube.com/watch?v=9e9HwZWC3g0
Also before anybody says anything ive just completely stopped using 3rd gear since that grinding is obviously going to cause further damage to my box.
Im hoping someone can help me diagnose an issue im having with the gearbox on my 2001 Alfa Romeo 147 (1.6).
Basicly it just started yesterday when (coincidentally) I was driving in to get my MOT. The gearbox has always been a bit "loose" since i bought the car and 4th has been a tad sticky in the past. However as i was driving along i popped into third and my gearbox just popped out of gear again. I try to reingage and it ground a bit so i gave up and went to 4th.
Upon further testing i found that if 0 load is on the gearbox it will stay in third however if you apply the slightest accelerator or the engine goes close to idle (at about 20mph in 3rd) the gear will pop out and if you hold it in it will grind. I've got reletivly little experience with gear boxes but ive read that it could be either some rubber bushes which guide the selector in (an aparent easy fix), the syncromesh on 3rd gear (gear box out for a 500quid+ rebuild) or missing teeth on 3rd gear (again gearbox out for 500quid+ rebuild).
Anywho its late here at the moment but i recorded a video of me trying to pull the car away from stationary in each gear. All gears function and pull is felt except from 3rd which judders back into neutral and grinds when held.
Video:
https://www.youtube.com/watch?v=9e9HwZWC3g0
Also before anybody says anything ive just completely stopped using 3rd gear since that grinding is obviously going to cause further damage to my box.
I would be more suspect of the gear linkages/bushes than the gearbox itself.
With someone in the car & someone under the car try to see which way the actual selectors are going on the gearbox then 3rd is selected, if you can see this co-ordinate another attempt for 3rd & try to "assist" the motion from underneath at the gearbox itself.
If this works then you have your answer.
With someone in the car & someone under the car try to see which way the actual selectors are going on the gearbox then 3rd is selected, if you can see this co-ordinate another attempt for 3rd & try to "assist" the motion from underneath at the gearbox itself.
If this works then you have your answer.
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