i have 2001 max gle
engine rpm doesnt work engine stall frequently check eng is on i dont remember the code number but is related at no engine sped signal
wher is the sensor who povide the rpm signal to the computer

 

That would be the crankshaft sensor that monitors the flywheel. It is on the bottom of the engine. But if it was bad, the car probably would not start. You could take it off and clean it, it might help.

Get the code for the check engine light. It will help us help you.