Nissan Patrol 2001 Problems

You could be dealing with either a worn transmission itself (where wear inside the gearsets, shafts or torque converter has made something sloppy) or there’s something else in the driveline (such as a differential or universal joint) that has likewise allowed some looseness or play to enter the equation. In either of those cases, a thump or clunk during shifts can be a symptom. It feels worse under acceleration, as that’s when the maximum stress is on all those moving, meshing parts.

Sometimes, a transmission can be serviced and adjusted to get rid of thumping or banging during shifts. Take the car to a transmission specialist who will be familiar with this transmission and may be able to return it to civility.

That model was known around the trade as the ‘grenade’, as it was just a matter of time before it blew up. I would suggest it could have.

Check the fuel supply side of things; it sounds like it’s not getting enough fuel on either side. Check the fuel pump, they are known to wear out on cars running dual-fuel systems.

Yes, it is a well-known issue with the 3.0-litre turbo diesel, one that we have publicized in Carsguide a number of times. Nissan has in the past offered assistance to owners who have suffered this engine meltdown. I would suggest you present your case to Nissan and request they come to the party as they have done with other owners, and if that doesn't work consult your state government consumer affairs people.

Under the Australian Consumer Law introduced in January 2011, a consumer can request a refund or a replacement for persistent problems if the car doesn’t do the job it’s supposed to do.

I have to assume you are talking about diesel engines here and want to swap a 3.0-litre turbo engine for a 4.2-litre non-turbo. In that case it is possible to make the swap without major surgery, but it is likely to be hard to find a decent 4.2-litre engine and gearbox. You might be better to install a 4.2-litre turbo diesel, that way you would get the better performance, but again finding an engine for the swap would be difficult. It would be more economical to swap your car for another one with the engine and gearbox combination you want.

They can give trouble as you have been told, but it’s not possible to say if yours is likely to blow up. Have a mechanic with knowledge of Patrols check it over before you go, you should have it serviced in any case before a long trip as you plan and a check on the engine would be worthwhile.

Given the history of your car I would hope that Nissan would come to the party with assistance in rebuilding your engine. If there is no offer forthcoming the only course left open to you is legal action and I would consult the fair trading people in your area.

The 3.0-litre turbo diesel Patrol is renowned for blowing pistons, but you’re talking about a car that is up to 10 years old. The best you could expect is for Nissan to cover part of the cost of rebuilding the engine, something they have done with some other owners.