My 2006 RAV4 V6 is getting the check engine & VSC & 4WD lights to come on. I took it into Toyota and they said it was the mass air flow reading. They did not tell me the exact code. They recommended changing the K&N Typhoon back to stock. Well, I've had this K&N intake for years and have driven it tens of thousands of miles with no problems. So I don't believe it's the intake. The last few months, the lights would come on like once a month. I pulled the negative off the battery and reattached it after a few hours to clear the codes. Recently it's been happening more often, like once a week. The filter is clean and I have cleaned the sensor. Is it possible the mass air flow sensor itself is bad? Thanks for any feedback.-SB
Mass Air Flow Sensor
1 reading
SeriousBlack
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Fingers crossed!
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I just returned from a trip to NY and back. About 700 or so miles. No lights went on. Hopefully the second MAF sensor cleaning did the trick. I'll give it a few more weeks before claiming victory.
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I claim victory! After another trip to NY and back, still no lights on. The second thorough MAF sensor cleaning did the trick. No need to buy a replacement at this point. Thanks for everone's help on this. Remember, the dealer wanted me to install the stock box back before they would look at it.
WHAT? You're still driving the BlackMobile?
Glad to hear the MAF is all sorted out. :thumbs_up:
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Yeah, I had to picked my son up from college for the year and move all his stuff. The Subie just doesn't have the room that the RAV4 has. I have no plans to get rid of the BlackMobile anytime soon. At 158,000 miles it still runs great (now that the MAF is fixed). My wife drives it now, and she could care less about the black rims, so they might be going up for sale.WHAT? You're still driving the BlackMobile?
Glad to hear the MAF is all sorted out. :thumbs_up:
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Just an update, the MAF cleaner did the trick, still no problems. The RAV4 now has over 161,000 miles.
Cool! Now, what about that leak?
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The mechanic will work on that tomorrow.
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Let us know if that works for you. All is still good with the BlackMobile!
Mass Air Sensor for 2008 Rav4
This forum is excellent for all sorts of suggestions/hints in self-maintaining my Rav4. Recently my check engine light came on. Zipped over to Walmart and purchased the Equus 3030 code reader ($58). Very user friendly product and it immediately identified the MAS as the culprit. Went to NAPA and purchased a can of the CRC cleaner (about $6) and zapped the sensor intensively. Put sensor back after allowing to dry thoroughly and drove car about 50 miles before the check engine light came back on. I tried replacing with a new sensor but the light continued to pop on. Finally in desperation, I cruised the web for any other solution and someone mentioned the possibility of a loose hose housing. With trusty flashlight, sure enough was able to locate the hose just dangling in the engine compartment. It is not that easy to pick it out due to the dark colors and the fact it is back in under the hood. Reattached the hose.....problem solved. No check engine light. Hopefully the attached JPEGS of before and after will help anyone faced with similar dilemma.
This forum is excellent for all sorts of suggestions/hints in self-maintaining my Rav4. Recently my check engine light came on. Zipped over to Walmart and purchased the Equus 3030 code reader ($58). Very user friendly product and it immediately identified the MAS as the culprit. Went to NAPA and purchased a can of the CRC cleaner (about $6) and zapped the sensor intensively. Put sensor back after allowing to dry thoroughly and drove car about 50 miles before the check engine light came back on. I tried replacing with a new sensor but the light continued to pop on. Finally in desperation, I cruised the web for any other solution and someone mentioned the possibility of a loose hose housing. With trusty flashlight, sure enough was able to locate the hose just dangling in the engine compartment. It is not that easy to pick it out due to the dark colors and the fact it is back in under the hood. Reattached the hose.....problem solved. No check engine light. Hopefully the attached JPEGS of before and after will help anyone faced with similar dilemma.
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Wow, great info and photos, Procket! If that hose pops out again, I would find some way to clamp it or glue it in place. Had a Nissan once and when the motor mounts wore out the engine would rock in the bay, causing that large accordion hose to split. It was hard to find the split because it was at the bottom of one of those ribs. That big hose is a dealer only part, and you don't want to know what it costs!
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Good info procket! Thanks for sharing.http://www.rav4world.com/forums/members/52462-procket52.html
If you look at Prockets second picture , you can see the sensor just in front of the brake fluid reservoir. It's screws into the air box, (little black box) just unscrew and lift it out, unplug it and spray it.
I am happy to try and help. Please refer to attached picture of the MAS looking down on it. There are 2 small Phillips screws that hold the MAS to Air Filter black housing. Prior to removing the screws, you need to pry the electrical connector that is attached to the MAS. Again, refer to the picture that shows the 5 lead wires (different colors) to the right of the MAS. Use a flat head small screwdriver to lift the plastic clips that hold the electrical connection in the MAS. You need to jiggle the connector slightly side to side to remove it from the MAS. Once you have removed the connector, unscrew the (2) screws and gently lift out the MAS. You may have to rock it back and forth a little to free up the rubber seal/gasket. Pull out the MAS and you will note a long cylinder shape that at the bottom contains a very thin wire. Do not touch the wire. This wire is what you want to clean with the CRC Mass Air Sensor cleaner (see attached picture). You can get this cleaner at any auto store. I purchased my cleaner at NAPA for around $6. Don't scrimp on spraying the solution all over the housing and the wire. Then let it sit for a good period of time to ensure that all of the cleaner has evaporated. Then reverse the procedure to re-install both the MAS and the electrical connector. The install is pretty fail-safe given that there is only one way to line up the screws on the MAS. Make sure that you insert the electric connector back into the MAS so that it is a snug fit and the plastic clips are in place. Hope this is helpful. Good luck.
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Allow me to add that what procket said ^^^ is very important. If you break it, you'll be buying a new MAF. It's also important to use either the CRC MAF cleaner mentioned, or a residue-free electronic component cleaner. DO NOT use carb cleaner or brake cleaner.
BTW, really nice job, procket...thanks!
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