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How to Clean Mass Air Flow Sensor
My check engine light is on in my 1998 ML320.
As I understand it, the following codes P0170 Fuel Trim Malfunction (bank 1) P0173 Fuel Trim Malfunction (bank 2) indicate a problem with the Mass Air Flow sensor. I would like to try cleaning it. Could I do it this way: Open up the air cleaner. Discard old air filter. Clean out the interior with a wet cloth. Start engine. Spray Mass Air Flow Cleaner into air intake. Install new air filter. |
#2
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Quote:
I think you should remove the MAF to clean it.
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1993 190E 2.3 2001 SLK230 1971 LS5 (454) Corvette Convertible |
#3
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You have to remove the MAF insert from the plastic housing. You will need torx security bits for this. Spray the wire in the insert with CRC MAF cleaner. I assume that you are reinstalling or getting a new air filter if needed.
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#4
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As Michael mentioned you'll need to remove the insert. Let it dry before assembling everything.
Unfortunately this is probably just a temporary fix. It will work great for a couple of months but most people's experience is that the sensor is on its way out. You should think about just buying a new one. It's pretty cheap. Hopefully you've been around and know not to buy the parts off of ebay. For the most part they are all scams. |
#5
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Scam ?
I tryed cleaning my MASS no luck.
Bought one on Ebay over a year ago, it was cheap and worked fine. I dont think most Sensors are bad on Ebay. Check the sellers rating.
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Steve Danville what i did myself. CPS rear shocks MAS x 3. SparkPlugs (twice) Fuel pump & Filter Window switch replaced both failed horns with Honda horns. Cleaned ERG Tube Oil changes Oil consumption Fix Brake Pads A/C Recharge Anti-Freeze change X 2. Front Shocks. Monroe. $90 Mercedes Warrenty Work: Harmonic balancer,power steering clamp. Cat converters.Drive Shaft Bearing.s Replaced Outer Lower Tie Rods and front lower ball joints at 156,000 miles |
#6
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Others have had problems with the ebay MAFs though. It is safer just to get it from ********az or germanstar. |
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