P L E A S E G I V E ANY TIPS ,ADVICES I WILL DO EVERYTHING TO GO THRU WITH YOUR CLUES AND ADVICES

I tried write a post to you many times ,but i was just reposting in my first one
I hope you will respond to this one
Dear Sleepwalker,
I GOT FEW PROBLEMS ON MY 1997 E320
I HAVE CODE P0410 SECONDARY AIR INJECTION -HOW DO I FIND IT OUT IF IT IS AIR PUMP OR SOMETHING ELSE
AND ON NEUTRAL WHEN I TRY REV IT GOES ONLY TO 3700 AND START SHAKING AND DOESN'T REV MORE ,BUT WHEN I DRIVE IT IS OK IT GOES TO RED LINE VERY EASY
AS THIRD OF MY PROBLEM IS AC - I DID SOME BLEEDING AND REFILING AND AFTER WAS OK ,BUT AFTER JUST ABOUT A WEEK LATER THE BLOWER(FAN )DOES NOT GO TO HI
JUST BLOWS JUST ABOUT MEDIUM - I DON'T KNOW IF THIS IS JUST COACCIDENT OR MY TOUCH WAS INVOLVE
IN STATE FLORIDA I AM FRING UP I HAVE TO START CAR AND RUN ATLEAST FOR 30 MIN TO GO IN
NOW QUSTION OF THE YEAR -I WILL BE WORKING ON MY CAR DOING A LOT OF WORK IN IT LIKE COMPLETLY NEW AC ,ALTENATOR ,WATER PUMP,DISCS BREAKES,ETC AND ALL KIND TUNE UP HP"DO I HAVE TO WORRY ABOUT LOOSING SOME CODES ON MY ECU ,PROBABLY MY ECU AND BATTERY WILL BE REMOVED ?
IT DID HAPPEN TO ME IN CADILLAC I DID REBUILED AND NO ONE COULD START MY AC AND I HAD TO PAY 700 FOR PUNCHING FEW NUMBERS CODES TO COMPUTER
THANKS FOR ALL YOUR EFFORTS