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SD1too · 8th September 2021, 06:53

Hello Samu and

to the club.

I'm not quite sure what you mean by a "blown reverse belt" but I take it that your mechanic replaced something in the automatic gearbox.

Here is the data sheet for Comma MVATF+ and it doesn't meet the MG Rover "N402" specification. However I doubt that the fluid could be responsible for such a severe malfunction. I think it's more likely that the gearbox has been underfilled (raising the revs being necessary to achieve the correct fluid pressure).

If you're not able to work on the car yourself my suggestion is that you find an automatic transmission specialist who can drain the fluid and replace it with a type which meets N402 spec. As the JATCO has no dipstick, someone who knows the procedure is essential particularly as the level checking plug is on the bottom of the gearbox casing!

Simon

8th September 2021, 06:53	#2
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,338 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Hello Samu and to the club. I'm not quite sure what you mean by a "blown reverse belt" but I take it that your mechanic replaced something in the automatic gearbox. Here is the data sheet for Comma MVATF+ and it doesn't meet the MG Rover "N402" specification. However I doubt that the fluid could be responsible for such a severe malfunction. I think it's more likely that the gearbox has been underfilled (raising the revs being necessary to achieve the correct fluid pressure). If you're not able to work on the car yourself my suggestion is that you find an automatic transmission specialist who can drain the fluid and replace it with a type which meets N402 spec. As the JATCO has no dipstick, someone who knows the procedure is essential particularly as the level checking plug is on the bottom of the gearbox casing! Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.