Well, till now I've got this from here and from other spots for the E34 and it's tds:
"tds is not the most reliable engine"; "the tds engine is not a very durable one. it's an old swirl camber diesel, no common rail injection and so on, the 143hp from 2.5 liters are very much for that engine generation. the tds has enough faults already without being chipped."
"check the front axle since they tend to wear out after about 150000kms":
- repair: Meyle: 300?, at Bmw you might pay up to a 1000?.
"Fuel consumption should be around 8-9l/100km"; "it can go from 7.5/8 till 10/11! Depends on how heavy your foot is!", "At high speeds of 200km/h the consumption goes for 20l/100" - Looks like an Unimog
"Rust at the fuel filler cap on the bottom -> rusting from the inside"
"Rust at the body right above the rear bumper or remove the bumper to see it"
"Rust bottom of the doors"
"Burnt the head joint 2 times (it was frequent on this engine)"
"The clutch from the 2nd generation has to be changed every 80.000 km because the mass of it would crack (perhaps it's a bad translation from spanish to english).
- repair: change for a normal clutch with plate and springs: 300?!
"Electrical problems... It would burn the bulbs 1-2 times a month!" "The inside lights would turn off phantasmagorically!" "Many electrical problems that fails with the weather!"
"The diesel injection pump (bad idle speed) is a piece of precision and relojoary. If it fu** up... Don't even dream on get it fixed"
- repair: "new one with a price of 2400?" - As I say it's better get a 525 tds in Germany for 1000? and then switch that piece!
"diesel pump in the fuel tank (engine runs only when the fuel tank is more than half filled)"
"One of the supports of the fuel tank get broken!"
- Repair: welding!
"The maintenance isn't properly cheap"
"I had to change the engine... I've get a new one on BMW with 260000km and it cost 4500?. After that it made more 80000km before I sold it"
"A car too heavy that will drag itself!"
"Oh,any vibration means engine mounts split,jack sump(block of wood) to test"
"it's a fucking boat"
"It drives well, it eats well and it's very reliable, on the opposite of the 318tds"
"he also has upwards of 300 000km, and hasn't had a single problem with the engine"
"I've got a friend with a 525tds that has 600000 kms, the engine have never been opened and it still goes for 220km/h"
"the key to long life is good oil and frequent changes,if no proof walk away!"
"A very comfortable car!" -> But this doesn't matter! With the new coilovers it gets sticky and with the best ride!
"It has a braking system the best I've already tried in a car!"; "The most that surprise me was the brakes! Some friends get scaried... They would try to brake from their side of the passenger seat... But it was I who have the pedals!"
"if you really want an unimpeachable diesel, take a Mercedes W124."
This is all I can get for now! But I'm guessing that's a luck after buy it! Even theres another problem with the drivers... They step in the car, get the key turn on and there we go! With those bimmer, and also with every diesel car with turbo in general, it should work a little before we step the gas! The same when we stop it! This is to get the turbo oiled properly, to don't have big differences between the inside temperature of the engine and the outside temperatures and also because the pressures of the engine! Then people say the engine will crack! But who does this thing on their diesels?
Ah I found here that this M51 engine can be changed to wear veganoil:
http://www.openhardware.de/mechatronics/bmw-m51-vegoil/index.html
Please continue posting problems and history's about this E34 please!
And about manuals... repair manuals or owner manuals about this E34?! Anyone knows?
Cumplz