Ok, I have two 03 X5's. One is 4.4 with 92K and the other is a 4.6 with 74K on the clock.

The 4.4 had a check engine light on so I borrowed a diagnostic computer and the code was P2189 System to lean @ idle speed bank 2. I went ahead and cleared it but anyone.....

The 4.6 code was P0741 Torque converter CKT performance or stuck off
Anyone???

Also I am in the market for one of these diagnostic tools, and know they can be purchased from around $40 to over $200. Anyone have a good recommendation???

Thanks in advance for your help.