BMW 740iL Questions

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Right now I am in Las Vegas it's very hot, transmission won't shift RPM is at 3000 MPH 25 won't shift out.
After the car cools down it runs perfect. A mechanic told me it was the transmission temperature control regulator. The part is a $100 and to install it is $100 would the transmission do that if it was the regulator...?
changed fuel filter and the fuel pump seems ok i can here it running.acts like its not getting enough fuel. it use to run a little rough for a minute when i would start it then ran fine after that. now it wont stay running
I noticed car was shaky. Got worse & worse while the car was stopped. Eventually didn't want to accelerate when i stepped on the gas, even floored it & it ran very slow then gained speed. Any help? Opinions?
Bought car used and some fuses are out is this causing the problem? Where is fuse for sunroof?
The time change was recently replaced. U shaped rail was broken. Light stays on engine light. error code 342?????
Hesitates ,no power in low
The car was shutting off at red lights, then when turning corners. Finally, tried to start it in the driveway and it shook, now won't start. Someone said the camshaft position sensor.
I bought 2 radios and the black box in trunk and the same thing I even pulled a working radio out a 540 I and steal no power
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