I am sorry, verse again to the question
 

Hello, I have a x5 4.4i e53 n62, the problem when I boot it feels an instability in the engine, previously not it towards, driving feel with little power, moving sometimes feels the same instability in the engine, there is no light lit in the dashboard, I hope can help me, temperature environmental operation this between the 68f and 100f,. 73k

Sorry but i dont understand your problem. Please explain a little more:thumbup:

Help
 

When starting the vehicle feels instability in the engine. driving there is loss of power. and also feels instability while driving. There is no indicator on the dashboard.
Tk

by instability do you mean it feels rough or shakes? possibly sounds like misfires within the engine? i am sure more experienced members can help u out if that is the case.

Help
 

the engine is running and stopped, feels tremble, driving the engine lost power.
tk

What engine do you have?

X5 4.4i E53 N62

It sounds like you have a missfire. When you rev the engine in N does it sound rough or nice a smooth as it should be?

no missfire, tremors, 'n' feels very little, 'D' more.

MAF maybe?

that he is maf?
 

that he is maf?
tk

Item #1in this link is the MAF = hot film Mass Air Flow sensor.
RealOEM.com * BMW E53 X5 4.4i Hot-film air mass meter

I think you ask " what is the maf "
am I correct .

you can remove electric plug from maf to see if it makes the car run better .
if it runs better , maf will need cleaning or replacing . or possibly there is air leak after maf .

That will be the solution?
tk

try this and tell us if it works
mechanics here can help
good luck.
edit - use the search function at the top of this page , enter the symptoms of the problem , example - vibration , loss of power .
a bad engine mount can cause vibration .
intermediate levers can cause vibration and loss of power .

Disconnect the MAF and the situation worsens, it is normal?.
This problem did not have it, start it two months ago

I think possibly intermediate levers but I am not an expert . item #5 http://www.realoem.com/bmw/showparts...69&hg=11&fg=25
these are very expensive
wait for a bmw tech to answer your questions .