[starbuck]

I bought this thinking I had an issue with my MAF however soon realized my issue was a separate vacuum leak... as my original MAF is working, I am selling this MAF that I purchased a month ago at GermanParts.ca for $350

My loss is your gain. I am selling well under purchase price.

Price : 150

[E86Z]

Out of curiosity, what were your symptoms and how'd you find the vacuum leak?

[starbuck]

I had a an erratic idle when in park or in drive at a stop. I also had lean codes when scanning with inpa and then more recently a p1415.

I changed the maf, plugs, air filter and ran a bottle of fuel injector cleaner with no luck. Finally got it smoke tested and a leak was detected in one of the vacuum hoses.

[N54_e90]

Originally Posted by starbuck

I had a an erratic idle when in park or in drive at a stop. I also had lean codes when scanning with inpa and then more recently a p1415.

I changed the maf, plugs, air filter and ran a bottle of fuel injector cleaner with no luck. Finally got it smoke tested and a leak was detected in one of the vacuum hoses.

Which hose was the culprit if you don't mind me asking?

[manutd]

Originally Posted by starbuck

I bought this thinking I had an issue with my MAF however soon realized my issue was a separate vacuum leak... as my original MAF is working, I am selling this MAF that I purchased a month ago at GermanParts.ca for $350

My loss is your gain. I am selling well under purchase price.

Price : 150

Whats the part number on the maf?

[starbuck]

Part number is 5wk97502z

And the vacuum leak was the hose connecting to ccv.

[Volasko]

Sometimes air fuel error codes are from the MAF connector and not the actual sensor. I was trouble shooting similar lean/rich error codes for about a half a year until I came upon this thread:

http://www.e90post.com/forums/showthread.php?t=905209

I followed the instructions and changed my connectors and haven't had an error code yet! I believe if you snapped your MAF connector clip (pretty common) the missing material lets in additional moisture which compromises the connection causing the error codes. Worth a read, saved me tons of troubleshooting dollars chasing the annoying codes.

[starbuck]

I had read that post as well and changed my connector before figuring out it was the vacuum leak : )

A lot of work before finding the solution

[starbuck]

Sold