2nd Gear Issues

[Trojan]

Hi all

Had a ride out in the 172 earlier today, and on the way back I noticed that everytime I went to change down to 2nd, it made a crunching noise as if I hadn't fully pressed the clutch. The only way I could stop the crunching from occuring was to slow to a crawl before selecting 2nd. Once into 2nd however, there were no problems at all and changing out of 2nd didn't cause any issues either.

All the other gears seem fine, I could change into them as normal, just 2nd that seemed to be affected by this crunching.

Does anybody have any ideas what the problem might be? Could I be looking at an expensive gearbox problem?

Cheers

 

[bmh.01]

Sounds like the 2nd gear syncro is worn/wearing, expensive problem.
Is probably cheaper to get a new gearbox than to fit new syncros unless you can do it yourself and then its a gearbox to complete pieces job, not very nice.

 

[16v_jon]

Try having the oil changed first

 

[Trojan]

Sounds like the 2nd gear syncro is worn/wearing, expensive problem.
Is probably cheaper to get a new gearbox than to fit new syncros unless you can do it yourself and then its a gearbox to complete pieces job, not very nice.

Not a chance of doing anything like that myself unfortunately

So, a new gearbox is on the cards is it?

Dare I ask... how much would I be looking at if that's the case?

 

[Trojan]

Try having the oil changed first

Is that an easy enough job, and more importantly, is it expensive?

Sorry for all the questions, not very mechanically minded

 

[JEFF4507]

Start shifting properly is the only answer I can think of..

 

[Trojan]

Start shifting properly is the only answer I can think of..

Wow, thanks for that, very helpful

 

[16v_jon]

Start shifting properly is the only answer I can think of..

obviously you dont know about the moon cheese synchros of the 172 box, the second gear goes first . chris and nic's car has a new box due to this. try changing the oil its £30ish quid may calm it down a bit before taking the plunge for a grands worth of work

 

[Trojan]

chris and nic's car has a new box due to this. try changing the oil its £30ish quid may calm it down a bit before taking the plunge for a grands worth of work

A grand?! <Dies>

I really REALLY hope an oil change can sort the problem for a while, I just can't afford a £1000+ right now

 

[JEFF4507]

Indeed Renault synchronisers may not be the best, so if you're after gearbox life, then double clutch downshifts will increase it no end. I take it there's little to no problem going 1st - 2nd

 

[JEFF4507]

Look up Gregs shifting school on google. It may be for BMW M5's but you don't have to have a monster to destroy a gearbox and clutch through poor shifting.

 

[16v_jon]

would be an idea to double clutch most of the time to save wear and tear esp on journeys where your not driving like you stole it.