Member
I drive it without the Mass Airflow Sensor “plugged in?”
It runs like new when I unplug it.
Error codes indicate a bad sensor but changing it made no difference; sputters and chugs along when plugged in. A friend will help me look for other problems in a few weeks. The car is 17 years old and is kept for sentimental reasons. A dealer fix will probably cost a ton. Not a daily driver so increased fuel consumption is not an issue, just concerned about additional damage.
Thank you,
Jim
Member
No, it won't damage the car. I've seen posts where owners had it unplugged for more than a year.
Wagon meister :)
BMW Tech Expert
It will only make the car run rich, thus plugging up your cat.
So do yourself a favor, get the intake smoke tested, or do a visual test of that big black rubber boot after the MAF. I bet there is a rip/tear in that thing.
Darin
Current:
16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
Past:
95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
82 528i euro Saphire Blue Met/Blue Leather RIP
79 525 euro Green/Green RIP
79 318 Silver/Black - The first one that got it all started
M-Flight Member
Jbird
That's because the airmass sensor is not the problem, need to do a complete dx on lt
Fast
Mine wont even run with it unplugged.
Member
Not so fast. With the MAF unplugged, the DME will go into a default mode. Not necessarily rich or lean, just a default mode. But yes, do fix the problem that is causing the car to run poorly with the MAF plugged in.Originally Posted by dworthy
Wagon meister :)
BMW Tech Expert
And yes, Default is rich.
Darin
Current:
16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
Past:
95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
82 528i euro Saphire Blue Met/Blue Leather RIP
79 525 euro Green/Green RIP
79 318 Silver/Black - The first one that got it all started
M-Flight Member
Apprentice w/#yrs. exp.
Yes,it will cause damage-to your cat converter!
An intake leak is the most likely, caused by a crack in the rubber intake boot, or the associated hoses.
Yes, rich is the default setting.
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