Or, and if you really need to, an MAF sensor isnt that expensive to replace. The car engines most sensitive situation for engine problems is at idle and during the starting moment. JUNK, Reviewed in the United States on September 3, 2018. Unplugged, it hovers around +/- 5 at idle, perfect. But either way, MAF sensors cant last forever. That was five months ago. Clean or Replace the MAF sensor if faulty or repair the wirings. Now, you can fire up the engine, and keep it idling. padding: 13px 50px; The past few months, starting in the early summer, we started noticing CEL codes dealing with lean condition on both the left and right banks. We have a focus on strong photography, and engaging articles about performance, luxury and interesting cars. I would go with Bosch BUT a can of cleaner is $6 to $8 bucks. What are the symptoms of a ailing meter. Thanks for the advice Alex. I priced one from parts.com for 262.00, 08 ml320 cdi,slk 230,01 boxster S,04carrera911,67 GT350mustang,02G500L,96 s600 w140, w210 e55t 2001, EVERY PROBLEM CAN BE FIXED WITH A LIL BIT OF PATIENCE. This is a fairly quick and easy repair for a mechanic, hence the relatively low labor cost.
} Therefore, if you realize that a lot of black smoke is pouring out of your exhaust pipe there is a significant risk that your engine runs too rich, which a bad MAF sensor could cause. Lots of cheaper MAF sensors are available, but this is not something you want to scrimp on. Contamination by dust, dirt, water ingress, and other impurities could clog it up. However, if your engine is running well, you can drive slowly to the nearest workshop. margin: 4px 2px; 
Such as, fraying, burn marks, short circuits, and so forth. display: inline; Damaged caused by physical contact or front-facing accidents. Cleared up my engine hesitation problem on my RV. background-color: #4CAF50; display: flex; Reviewed in the United States on May 23, 2019, My truck started throwing lean codes. There are two types of mass air flow sensors. While youre idling, the MAF sensor should be reading 0mg. Hi Magnus. Both of them also feature a similar pulse-width modulation of between 0.0 to 5.0 volts. I got this MAF to replace it and now it's doing the same exact thing again a few months later. border: none; Recovering autocross and track day enthusiast. This is owing to how accessible the MAF sensor is, requiring only plastic clips or simple mounts to be undone. Replaced it, took a short drive and less then 15mins..light was gone. As a very basic example, lets say the mass air flow sensor (also known as the MAF sensor) sees that there is 29.4 grams (2 x 14.7) worth of air surging into the engine. The MAF sensor is often quite expensive, as you sometimes have to replace the whole MAF sensor housing also, but even just the sensor itself can be quite expensive. Gently place the leads against the hot wire element. That helped a little, but replacing it put everything back into the normal range. Remember that engines work on a set air-to-fuel ratio. }
Diagnosing a MAF sensor is often relatively easy if you know what to look for. You are using an out of date browser. Constantly driving through dusty environments, exposing the sensor to even more clogging. ul#navigation a.last { This voltage output will be proportional to what air flow rate youre getting and will be passed on to the ECU to be measured and analyzed properly. A compact form factor forces MAF sensors to be placed within the tight confines of smaller engines. While they have similar functions in analyzing metered air, they do work differently: As you can see, neither sensor measures air flow rate directly. This should give you ample time to head over to a mechanic and get it checked out. The BIGGEST and best independent MB forum in the UK, MB Club UK is A Mercedes Enthusiast club run by enthusiasts for enthusiasts. It should go up when you rev the engine and down as the engine RPM decreases; if the value is stable, there is either something wrong with your diagnostic tool, MAF sensor, or the wirings to it. It was reading, but not accurately. He also told me the fuel ratio sensor need to be replace. Your email address will not be published. It was never good on gas anyway, but it has now improved, and runs as smooth as a sewing machine, like new for 80 bucks, in my truck it will pay for itself in gas mileage in a month!!! A faulty MAF sensor can cause a faulty air-fuel mixture and it can cause many strange performance issues with your car and slow acceleration is one of them. You must log in or register to reply here. Check your vehicle owners manual for its recommended maintenance schedule to see exactly how often you should do this. For a bad MAF sensor, look for any P01XX error codes. Came up on a scanner a few weeks back as faulty. Check your repair manual to measure the sensor and the wirings to it. Again, we noticed a bit of improvement, but the P0171 and P0172 codes persisted. Dream car: 2001 Subaru WRC rally car. Replacing the mass air flow sensor sooner rather than later will avoid these potentially more serious and expensive problems. Fitment was perfect and it made an obvious difference making the truck run much better. I'm sure you would be told something like $300.00 and up. I unhooked the battery prior to starting the work and by the time I was done I just hooked it back up and was good to go. With a quick tap of the sensor on idle, the readings should remain constant. It may not display this or other websites correctly. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Diagnosing a Failing Mass Air Flow Sensor. display: inline-block; html,body { But if it ever goes again I will be replacing it for a gen item as judging by the posts I have been lucky. To know which resistance you should see on the multimeter, you can look it up in your repair manual for your car model. It's not a bad idea before installation to clean out air box and replace air filter too while you are in there, Then fire it up, if you have a PO101 code it will be automaticly erased by battery disconnection anyway. If you notice that your car is much slower than usual, there is a significant risk that your MAF sensor is at fault. } 11 Ways to Maximize Fuel Economy (and Beat High Gas Prices), Replacing the Fuel Filter: What You Need To Know, Hesitation (when you press the gas pedal, the car pauses before accelerating). Exact OEM replacement for 2004 Silverado 2500HD 4x4 6.0L, Reviewed in the United States on August 6, 2017. I was only saying that the oem one in my car is a pierburg, The car will have been built for a Bosch (mainly petrol) or Pireburg (mainly diesel). .columns { If you find any trouble codes related to misfires, it can be a sign of a bad mass air flow sensor. How Much Does It Cost To Replace a Windshield? While on vacation the OEM delphi sensor starting throwing a code. Reviewed in the United States on December 1, 2021. To burn the fuel correctly, the engine needs 3 things the right air-fuel ratio, ignition, and compression. Bosch are very good. I have four mercedes benz in my house and I have alot of experience with these air mass sensors. In this article, we will talk about the symptoms of a bad MAF sensor, location, and replacement cost. flex: 33.33%; Again, this will vary depending on the make, model, and. }
Altogether, these sensors can best inform the engines central command module, the ECU, about the air. As the O2 sensors were the original, we then decided to replace them with AC Delco O2 sensors and checked. I only paid $120.00. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. As the ECU reads this, it can then pump in 2 grams worth of fuel to mix in with that air to match that stoichiometric ratio. The car is Polo Volkswagen 2009. Wide selection of replacement auto parts; VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The non-bosch did not last long and gave me a check engine light in less than a week. What Are The Symptoms From A Bad Mass Air Flow Sensor? Black smoke from the exhaust pipe is a strong sign that your engine is getting too much amount of fuel compared to the amount of air. Moreover, and given how sensitive the measuring elements are, see if theres any damage or drifting there, too. Therefore, if the air-fuel mixture is very far beyond the specifications, it may cause one or more cylinders not to ignite at all, and this will cause the engine to ignite incorrectly, causing a misfire. text-align: center; A Mass Air Flow Sensor costs $100 and $400 and you can expect the labor costs to be $40 to $150. Besides that, you should also look at the sensor itself. For a better experience, please enable JavaScript in your browser before proceeding. But, being careful to not physically hit the exposed measuring elements. Copyright 2022 Mechanic Base. Your ECU is surprisingly efficient at spotting even the tiniest and subtlest of issues. Related repairs or maintenance, such as air filter replacement,may also be needed. Apart from components just failing or going out of spec the actual sensors will wear after some time. If a sensor sends an incorrect signal, the ECM or PCM will turn on the check engine indicator light. Therefore, a faulty MAF sensor can cause fuel consumption to either go up or down. It could vary significantly depending on what vehicle you drive. On average, and within a MAF sensors lifespan, every liter of fuel used equates to around 9,000 liters of air that flows past the MAF sensor. cursor: pointer; border: 1px solid #ccc; position: fixed; /* new */ What Causes Your Mass Air Flow Sensor To Fail? 1993 300E 2.8 (sold), 2012 C250 (wife's), 2004 C230 (sold), 2005 E320 (sister-in-law's). RELATED: Rough Idle Causes & How to Fix it. Unplug the wires connecting to the MAF sensor by squeezing the plastic tabs holding it in place. (Heres How To Fix it). You can also notice a little more gray smoke from the exhaust pipe than usual if your engine runs rich. I use a ScanGauge to monitor fuel trim on the 8.1 Vortec motor in my motorhome, and it was starting to run lean over time. He said the maf sensor is bad. Brand new unit, it is exactly the same as my original I took out which lasted 13 years and 140000 miles. margin: 0; } Technically, there are also three other types of MAF sensors in use. However, you can save even more money by troubleshooting the problem yourself. To ensure an optimal balance of performance, fuel economy, and with minimal impact as far as emissions are concerned, your engine has to carefully use as much fuel as it really needs to. Then when my car ran like a bag of you-know-what, I threw it away and bought a genuine part. Everything was fine for about 4 months and bam I had more MAF codes. Sometimes this sensor can get clogged with debris or fail entirely. You can carefully tape it up to prevent it from getting sprayed, just in case. The Bosch, or one from a local parts place "remanufactured" seem to be the best bet. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Welcome to Motor Verso. Reviewed in the United States on April 12, 2021. W210.265/2001, W220/S500/2000, Porsche 997 C2S/2006, GMC K1500/1992. Not sure where you are shopping but I always put in the OEM or better as then I don't have to think about it. I've bought all three versions both for a TDI, and my landrover. I just bought the authentic Bosch that made in Germany. flex-direction:row; The Mass Air Flow Sensor or MAF sensor measures the air entering the engine to calculate the correct air-fuel mixture. width: 103%; /* new */ Disabling it will result in some disabled or missing features. It may not display this or other websites correctly. Though youll have to live with the aforementioned symptoms. For X amount of fresh air rushing into the engine, a corresponding Y amount of fuel is required to burn it. My Renault Magane Scenic 1999 petrol would start nicely and go well, at about 30km, car will lose power, rough idling stop and struggle to take off, after for about 30min to an hour would start nicely and go again but problem will repeat its self. Otherwise, any flux in the voltage readings is indicative of a fault with the wiring. Tested and sure enough I had another bad maf, but with only 4000 miles on this one. Any ideas. To diagnose it, you can proceed with the following steps to take before considering how much does a mass air flow sensor cost: The easiest way to tell whats wrong with your car is to plug in an OBD diagnostics tool. Pull out your old Delphi unit (Original equipment) re-insert new one, tighten band clamps, re-connect harness and negative battery terminal. As a whole, a bad MAF sensor wouldnt scrap your engine right away, but only make your cars driveability that bit more compromised and discomforting. flex-wrap: nowrap; The Mass Air Flow Sensor (MAF) is an important part for car engines to function properly. You may also get a P0174 code, which is the same problem on a second cylinder bank if your engine has one. Oem maf had 265,000 miles, replacement had 4000. The MAF sensor is a vital part of the car engine, and therefore a lot of things can happen to your car engine when it gets bad.- Columbia Waterbrook Ridge Rain Pant
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