DIY: 2005 XC90 2.5T Throttle Body Cleaning I have 2005 XC90 2.5T with 103K miles . Lately it has intermittent stumble at idle for 1-2 sec and that is all. On highway it runs fine. Codes were P0101 (MAF code) and P2188 (too rich at idle) . New Bosch MAF ($130 on amazon dot com) did not solve the pro...