Dear Forum-

'01 X5 4.4i, 107,000 miles...

After a bunch of repairs lately, pre-cat 02's, fuel filter, valley pan gasket, intake gaskets....

I was told by a local independent german service shop that I needed to change my Mass Air Flow sensor to correct a drivability issue and jumpy or not sustainable idle when hot and restarted.

So I got a Bosch (Beck Arnley) from RockAuto.com today.

Put in on and now it won't hold an idle at all... even if I use the throttle. If I unplug the MAF it starts right up and acts fine at idle, I haven't tried to drive it like that yet.

Any ideas? I already got what I thought was a bad MAF from eBay so this go around I decided to get what I thought was a good replacement from RockAuto.com.

No Service Engine Lights either.

Thanks for any help.

Oh and I tried the Throttle Adaptation Procedure and it actually idled for 30 seconds before it went into a 500RPM jump up and down and finally died.

Sincerely,
Jim Kennedy