Quote:
Originally Posted by mchlkly
I have an ’03 X-5, 3.0l e53 with 225,000 miles. I’ve been using after market inexpensive MAF sensors ...
If I shell out for an OEM sensor would it help?
|
I (also) have an '01 X5, 3.0i E53 with 211,000 miles. I've (also) been using (an) inexpensive MAF sensor...
(I've also wondered) "If I shell out for an OEM sensor, would it help?"
I'm not so sure if it would've helped to eliminate my (formerly) recurrent P0171 & P0174 codes (with the Check Engine Light getting triggered), but I was just about to buy one, just to see, but didn't have to.
My codes followed the same sort of pattern your X5 has done, except for different coding. On mine, it was not obvious that the MAF (an OEM Siemens unit, clean and in good shape) was underreporting, but after I tried a cheap MAF from Amazon, then the fuel trims started to balance, and my 6+ month-long hunt for the problem source was ended.
I'm not completely sure there's not a tiny vacuum leak still hidden. But the X5 passed emissions in October, and is still purring along.
Not knowing what codes you're seeing, or whether or not an O2 sensor might be iffy, there's no way to guess if an OEM quality MAF would help you out, but again, in my case, I took a chance on a $23 MAF (as recommended by
X5chemist), and it worked. I might've not gotten any better results buying a $250-$350 OEM part ???
Coincidentally, I just got another cheap MAF from Amazon (now $21), instead of getting a refund for a cancelled order, so now I have a brand new spare, for 2x the price of a can of MAF sensor cleaner.
Post some data so others can analyze your problem (better than I), but perhaps it'll be something simple.