Update:
Still haven't fixed it.
The other day i replaced the gearbox oil cooler thermostat and the housing for it along with the alternator belt. Didn't make a blind bit of difference.
Yesterday i replaced the sensor on the radiator (£20) because apparently they can still mess up and not show up on the computer. Great. Makes you wonder what else could be doing the same!
Anyway it didn't fix it. Although it did something though. The car lasted a little longer than usuall before playing up. When it did mess up, i put it into manual mode and it changed gear fine!! It had never done that before! Usually when the gearbox messes up, manual mode has no effect or control. So i continued to drive it and for some reason, manual and auto drive was working again? But only for another 20 minutes. Making my total drive time 1 hour and 20 minutes.
Going back in time a little bit....I decided to buy one of those lazer thermometers which arrived this morning. I wanted to check the gearbox for myself to see if it was actually overheating.....
Drove the car for 20 minutes or so to allow it get up to normal driving temperature and stuck the lazer on the sump of the gearbox. It was flicking between 102 and 106 degrees celcius. Lets just say it was 104 degrees for arguments sake.
I then drove it untill the problem occured which takes on average just under 1 hour. The problem came up so i jumped out to take a temperature reading.........it was now saying 135 degrees celcius!!
So i drove it home (about a mile) and checked the temp again. It had dropped down to about 120 for some reason. So i took her straight out again and she drove fine for 20 minutes! I thought it was sorted! But it wasn't
An improvement yes but hardly fixed.
So my gearbox is actually overheating. So what does this mean? I always thought that something else was giving an ECU a dodgy reading. Apparently not?
A quick summary of things i have replaced:
New electric thermostat. (for the engine)
New radiator.
Oil cooler flushed but not replaced as told it was ok by 2 different "specialists."
New gearbox.
New Cat converter and 2 new O2 sensors. (Apparently now the other cat is on the blink)
New transfer box motor
New gearbox thermostat and thermostat housing.
New radiator sensor.
New alternator belt.
So, what the hell is making it overheat?? It doesnt overheat on the motorway. Only urban driving for 1 hour causes it to overheat.
I will get the oil cooler and oil cooler pipes replaced next just to rule them out but after that, i am all out of ideas.
Surely i can't be the only person this has happened to?
I am literally at the end of my teather now. It's starting to effect my mental health and social life. I work 15 hours a day on the stock markets so i have plenty of stress as it is. I really am close to tears now. People are even saying to me that my car is turning me into a diferent person. People keep telling me to sell it but i can't. I couldn't do that to someone else. I would hate for someone else to go through what i am. Im not an arsehole like the guy who sold it to me was. It's my problem and i want to fix it.
2 gearbox spealists say they have no idea. 2 Indies say they have no idea and now even Land Rover are saying they have no idea and that im on my own!
Im begging for anyone to come forward who has had the same problem and share your results. It seems that lots of people on here have had the same problem but they never reply to let others know what fixed it!!!!!!!!!! Bloody annoying!!!!!
HELP HELP HELP!!!!!