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335d MAF reading appears low
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01-22-2019, 02:20 PM | #1 |
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335d MAF reading appears low
Hello all - first off - thanks to everyone who replied about my DPF issue. The thermostat was bad and replacing it led to a beautiful regen cycle that cleaned it all up.
I've noticed that my 335d (95k miles) still runs a little sluggish. Installed a scanner app that has some pretty cool actual vs expected readings (the expected readings are straight from the ECU) for both boost and air mass. I've noticed the air mass readings I'm getting are 25-40% below expected, pretty consistently. Boost seems very close to expected. Here's what I'm thinking of doing but wanted to get some opinions: 1) Clean the MAF - bought some CRC cleaner and will clean the MAF, then see if that changes anything on the air mass readings. I haven't been getting any stalling, rough starts, or bad idling, though. Just the sluggish performance at lower RPMs. 2) If #1 doesn't really help - do the walnut blasting Any thoughts or opinions would be most helpful! Andrew |
01-23-2019, 05:30 AM | #3 |
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I'm not sure how much this plays a part but when was the last time you changed your air filter? it seemed to have made a difference on my end.
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01-23-2019, 02:07 PM | #5 |
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I'll also mention that the MAF sensors on these cars seem to wear much faster than other vehicles and are more prone to failure. I've been through several at the dealer under warranty.
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01-24-2019, 01:36 AM | #6 |
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01-24-2019, 12:06 PM | #8 |
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01-24-2019, 07:33 PM | #9 |
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That was a fire sale price, they are now back up to ~$200 USD. I see that AArod has some at tune my euro for $60 though, might as well snatch one up while you can.
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01-25-2019, 12:51 AM | #10 |
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01-26-2019, 12:21 PM | #11 |
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Another thing to add to my to do list.
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