When I drive the LR it runs fine till the LR is warm. After the LR is warm it will stall, and the RPM will have high rev. Then when I am sitting at the light the vehicle will loose power, and the oil light will come on as it is stalling. The idle is rough, and completely shuts down. I have to let it sit till the LR has cooled down. I start it up and the RPM's will run high again. I put it in drive, and it will drive till I have to stop again. There is a crack on the driver side manifold, and I am not sure if this might be causing my issue. I do not have a check engine light on since I replaced the Oxygen Sensors.

I have replaced MAF, spark plugs, spark plug wires, Oxygen Sensors, coolant reservoir, thermostat, oil change, air filter. Pretty much everything except for the Engine, and transmission itself. My LR has over 163,000 miles on it. Please any troubleshooting advice would be helpful.

 

Next set of parts,
New Fuel Filter
Possible new Fuel Pump, based on your mileage
Possible Fuel Pump Relay
Possible Crank sensor

 

Do you think replacing these parts will fix the high RPM's, and stalling?

 

I have the same problom, only that i dont stall out. My disco acts like its gonna die but than moves (at a very slow speed).... i have tried replacing temp sensors, coil, even tried dry gas thing that i might have water in the gas.... Ive been told that its probably fuel pump... I really hope I'm wrong, because I'm 17 and its hard enough to pay for insurance and gas let alone expensiveness parts....

 

The crack in the manifold would concern me.

As far as an affordable fuel pump assembly, I used the ProLine from Rovers North approx 100 bucks.

 

A crack in the exhaust manifold will not have any effect on how the engine runs.
However a cracked intake manifold will.
You have a vacuum leak.