C5 2.0l 110 Manual Transmission

[mlkey]

Hi all,

 

Seem to have a noisy diff on my C5 52 plate, from what I have found so far this is reasonably standard. Best described as a whining noise that increases or decreases by road speed, not affected by different gear selection. Most noticable on acceleration/deceleration. Question is this. How can I check/drain/replace the transmission oil? Is it possible to do this without removing drive shafts etc? My plan was to replace the oil as it has done 100k now, and then put one of the additives in with new oil as an attempt to reduce the noise a bit.

 

Thanks.

[coastline taxis]

Hi all,

 

Seem to have a noisy diff on my C5 52 plate, from what I have found so far this is reasonably standard. Best described as a whining noise that increases or decreases by road speed, not affected by different gear selection. Most noticable on acceleration/deceleration. Question is this. How can I check/drain/replace the transmission oil? Is it possible to do this without removing drive shafts etc? My plan was to replace the oil as it has done 100k now, and then put one of the additives in with new oil as an attempt to reduce the noise a bit.

 

Thanks.

Is it manual or automatic

whining might be a wheel bearing.

[mlkey]

Is it manual or automatic

whining might be a wheel bearing.

 

Manual and most definately the diff/transmission, not a wheel bearing.

[coastline taxis]

Manual and most definately the diff/transmission, not a wheel bearing.

Ok drain plug on bottom of gearbox the manual box holds 2 litres. To fill it up we just remove the top speed sensor and let the oil flow (make sure you put the right grade of oil in i think (think mind) that its ep 75w80 but check first

steve

[mlkey]

Ok drain plug on bottom of gearbox the manual box holds 2 litres. To fill it up we just remove the top speed sensor and let the oil flow (make sure you put the right grade of oil in i think (think mind) that its ep 75w80 but check first

steve

 

Thanks.. Where do I find the speed sensor? I can do this tonight in the lovely sun...

[coastline taxis]

Thanks.. Where do I find the speed sensor? I can do this tonight in the lovely sun...

top of the box next to g/box mounting youl see 2 wires going into it pull plug of and unscrew the sensor

[mlkey]

top of the box next to g/box mounting youl see 2 wires going into it pull plug of and unscrew the sensor

 

Thanks. Went to do it tonight, but could not work out why my allen keys would not fit the drain plug until I used a mirror to see it is a square drive... Don't suppose you know the size? Will need to buy one tomorrow...

 

Thanks for all your help.

[coastline taxis]

Thanks. Went to do it tonight, but could not work out why my allen keys would not fit the drain plug until I used a mirror to see it is a square drive... Don't suppose you know the size? Will need to buy one tomorrow...

 

Thanks for all your help.

try using ur 3/8 ratchet first im sure that it just fits straight into it. if not the local discount store we got a set of sump plug removers for 7 quid by laserline and they work fine. Snap that i normally use wanted £51 so it got me thinkig now

[mlkey]

try using ur 3/8 ratchet first im sure that it just fits straight into it. if not the local discount store we got a set of sump plug removers for 7 quid by laserline and they work fine. Snap that i normally use wanted £51 so it got me thinkig now

 

Mission accomplished... Thanks! It was a 5/16 in the end. I am pretty annoyed with my local guy, he assured me the oil level was fine, although I now see he coulod not of checked it. There was only 1.3 litres in there, so I guess the damage is done, put two fresh litres in and tube of gearbox additive to help things along.

 

I had trouble with the speed sensor, so used the breather, seems the easier route, nothing spat back out.

 

Thanks again!

[mlkey]

try using ur 3/8 ratchet first im sure that it just fits straight into it. if not the local discount store we got a set of sump plug removers for 7 quid by laserline and they work fine. Snap that i normally use wanted £51 so it got me thinkig now

 

Mission accomplished... Thanks! It was a 5/16 in the end. I am pretty annoyed with my local guy, he assured me the oil level was fine, although I now see he coulod not of checked it. There was only 1.3 litres in there, so I guess the damage is done, put two fresh litres in and tube of gearbox additive to help things along.

 

I had trouble with the speed sensor, so used the breather, seems the easier route, nothing spat back out.

 

Thanks again!

[coastline taxis]

Mission accomplished... Thanks! It was a 5/16 in the end. I am pretty annoyed with my local guy, he assured me the oil level was fine, although I now see he coulod not of checked it. There was only 1.3 litres in there, so I guess the damage is done, put two fresh litres in and tube of gearbox additive to help things along.

 

I had trouble with the speed sensor, so used the breather, seems the easier route, nothing spat back out.

 

Thanks again!

never to old to learn as id never thought of using the breather tube but if its easier then i will be in future. and thanks for letting us no it worked as it makes all the difference in the world when people say thanks

steve

[DaveHerns]

never to old to learn as id never thought of using the breather tube but if its easier then i will be in future. and thanks for letting us no it worked as it makes all the difference in the world when people say thanks

steve

Does the same apply to the 6 speed manual box ? And is there no dipstick , so you drain it all out and refill with the appropraite amount ?

[coastline taxis]

Does the same apply to the 6 speed manual box ? And is there no dipstick , so you drain it all out and refill with the appropraite amount ?

yes all the same apart from the automatic boxes which is a bit more involved