2.5 v6 Automatic gearbox issue

thanos.m · 27th October 2019, 11:00

Hi everyone,
Last morning I started my 75 and the moment I put it in drive the was bang and jerk i didn't think much of it though, I went to drive off and the car would bang and jerk at the gear changes that got me really worried but there was no slip I restarted the car and the gearbox was smooth as silk for the rest of the day. Then today I went to drive off again it all seemed fine but just a few meters from house the car would have small but noticable bang in the first gear change and smooth on all the rest. The car has 106k miles and it had a fluid change a couple of year ago and has done only around 6-7k mile since. Any ideas ?
Regards,
Thanos

Dawn · 27th October 2019, 11:12

Sounds like a sticky solenoid maybe?

GazYorkshire · 27th October 2019, 11:17

I had a Mk2 Granada that used to do this - it had an ATF leak from the sump gasket and would bang once the fluid was low.

roverbarmy · 27th October 2019, 12:15

Start with the basics. Check for fluid leaks and check fluid level.

If necessary :-
https://www.the75andztclub.co.uk/for...ight=atf+flush

Or/and :-

https://the75andztclub.co.uk/forum/s...28&postcount=4

thanos.m · 27th October 2019, 14:30

I had a look underneath I couldn't see anything sipping out and the fact that restarting the car yesterday fixed the issue I'm thinking its something of an electronic nature. I guess I'll see how it goes because I don't fancy taking the car apart since it's my daily driver ��could a sticky solenoid cause further damage though ? Edit: now the car banged in reverse as well could it be some sort of mount or something gone loose? There was a clank and jerk as well

thanos.m · 27th October 2019, 16:47

The car in way back from work was pretty much undrivable I guess itll have to be towed to a mechanic at this point it bang through all the gears and it jerks on down shifts.

trikey · 28th October 2019, 12:47

Quote:

Originally Posted by thanos.m

Quick update Took it to my mgr expert today and we found a perished engine mount and it is indeed a 2 4 solenoid. None of the mg rover garages want to get involved with it it and the transmission shops quote silly money so I guess I'll have to tackle it myself which I didn't really want to

It’s a simple job, drain the auto box, whip off the front cover and the solenoids are exposed.

A couple of hours start to finish.

rushly · 28th October 2019, 23:08

Quote:

Originally Posted by thanos.m

Hi everyone,
Last morning I started my 75 and the moment I put it in drive the was bang and jerk i didn't think much of it though, I went to drive off and the car would bang and jerk at the gear changes that got me really worried but there was no slip I restarted the car and the gearbox was smooth as silk for the rest of the day. Then today I went to drive off again it all seemed fine but just a few meters from house the car would have small but noticable bang in the first gear change and smooth on all the rest. The car has 106k miles and it had a fluid change a couple of year ago and has done only around 6-7k mile since. Any ideas ?
Regards,
Thanos

Try these people for the 2-4 solenoid. £69.60 delivered, excellent communication from them, you can even phone them up 👍. I had the same problem back in March and bought my solenoid from them.

https://www.ashcroft-transmissions.co.uk

rushly · 28th October 2019, 23:21

Quote:

Originally Posted by thanos.m

Hi everyone,
Last morning I started my 75 and the moment I put it in drive the was bang and jerk i didn't think much of it though, I went to drive off and the car would bang and jerk at the gear changes that got me really worried but there was no slip I restarted the car and the gearbox was smooth as silk for the rest of the day. Then today I went to drive off again it all seemed fine but just a few meters from house the car would have small but noticable bang in the first gear change and smooth on all the rest. The car has 106k miles and it had a fluid change a couple of year ago and has done only around 6-7k mile since. Any ideas ?
Regards,
Thanos

Try these people for the 2-4 solenoid. £69.60 delivered, excellent communication from them, you can even phone them up 👍. I had the same problem back in March and bought my solenoid from them.

https://www.ashcroft-transmissions.co.uk

27th October 2019, 11:00	#1
thanos.m Avid contributor Rover 75 saloon Join Date: May 2019 Location: West Sussex Posts: 223 Thanks: 54 Thanked 41 Times in 26 Posts	2.5 v6 Automatic gearbox issue Hi everyone, Last morning I started my 75 and the moment I put it in drive the was bang and jerk i didn't think much of it though, I went to drive off and the car would bang and jerk at the gear changes that got me really worried but there was no slip I restarted the car and the gearbox was smooth as silk for the rest of the day. Then today I went to drive off again it all seemed fine but just a few meters from house the car would have small but noticable bang in the first gear change and smooth on all the rest. The car has 106k miles and it had a fluid change a couple of year ago and has done only around 6-7k mile since. Any ideas ? Regards, Thanos

27th October 2019, 11:17	#3
GazYorkshire Loves to post MG ZT Join Date: Aug 2012 Location: Halifax Posts: 360 Thanks: 25 Thanked 28 Times in 24 Posts	I had a Mk2 Granada that used to do this - it had an ATF leak from the sump gasket and would bang once the fluid was low. __________________ [SIGPIC]https://ibb.co/XCWhFmR[/SIGPIC]

27th October 2019, 12:15	#4
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	Start with the basics. Check for fluid leaks and check fluid level. If necessary :- https://www.the75andztclub.co.uk/for...ight=atf+flush Or/and :- https://the75andztclub.co.uk/forum/s...28&postcount=4 __________________ Oil in my veins!

27th October 2019, 14:30	#5
thanos.m Avid contributor Rover 75 saloon Join Date: May 2019 Location: West Sussex Posts: 223 Thanks: 54 Thanked 41 Times in 26 Posts	I had a look underneath I couldn't see anything sipping out and the fact that restarting the car yesterday fixed the issue I'm thinking its something of an electronic nature. I guess I'll see how it goes because I don't fancy taking the car apart since it's my daily driver ��could a sticky solenoid cause further damage though ? Edit: now the car banged in reverse as well could it be some sort of mount or something gone loose? There was a clank and jerk as well Last edited by thanos.m; 27th October 2019 at 14:34..

27th October 2019, 11:12	#2
Dawn I really should get out more....... MG ZT 180+ auto Join Date: May 2016 Location: Ilkeston, Derbys Posts: 2,743 Thanks: 285 Thanked 1,128 Times in 504 Posts	Sounds like a sticky solenoid maybe?

27th October 2019, 16:47	#6
thanos.m Avid contributor Rover 75 saloon Join Date: May 2019 Location: West Sussex Posts: 223 Thanks: 54 Thanked 41 Times in 26 Posts	The car in way back from work was pretty much undrivable I guess itll have to be towed to a mechanic at this point it bang through all the gears and it jerks on down shifts.