This is why you clean your MAF sensor

[BrAzZ]

i cleaned mine when i got home yesterday. i used WD40 which is very similar to CRC. workeds a treat. i didnt have my battery disconnected and all was fine! noticed an instant power increase with abit more response but mainly a cleaner more smooth power climb.

will see if fuel economy gets better also!

[BIGFOOTJR]

i cleaned mine when i got home yesterday. i used WD40 which is very similar to CRC. workeds a treat. i didnt have my battery disconnected and all was fine! noticed an instant power increase with abit more response but mainly a cleaner more smooth power climb.

will see if fuel economy gets better also!

Hope it was WD40 'Contact cleaner' that you used and not the lubricant.

[BrAzZ]

yep sorry the contact cleaner, probably should have stated that also!

[ibm450]

great info, cheers

[nickoslux]

Is this maf clean included in any of the scheduled services?

[boxhead55]

Yep every air filter replacement

[nicebike]

Thanks BH - yet again.

I can find no mention of cleaning this sensor any where in my service schedule, so we are dependent on whoever does our work both knowing about the need to clean, and also caring enough to do it.

My previous experience with dealer servicing indicates that it probably wouldn't get done. Perhaps things have changed, as your attitude, and that of some others on this board is certainly a breath of fresh air.

[jaybags]

If it's not in your service schedule, i'd take it off and check if it's clean / give it a good clean just to be sure. It's easy to do, if I can do it, anyone could.

[nicebike]

That's my plan Jaybags If I do it, it's done !!!

[boxhead55]

I did two 30000 km services yesterday and clean maf sensor was on the tick and flick sheet. I guess the always update the service coupons in the newer books

[nicebike]

I did two 30000 km services yesterday and clean maf sensor was on the tick and flick sheet. I guess the always update the service coupons in the newer books

Damn this dementia !

I looked and looked and couldn't see it, but look again now and there it is. Obviously hiding from me.

[boxhead55]

Ha ha we all make mistakes mate

[Luxi46]

Just did mine after replacing the stock Toyota paper filter with KNN oiled filter 18 months ago. Although it wasn't in bad shape back then, I also cleaned the MAF while at it. Was not happy to see the glow wires and temp sensor were covered in this grayish oily residue 26000 KM later. KNN specifically claim "after extensive research" that their filters don't gunk up MAF sensors. The filter was put in new from the box and the car's done strictly city and highway. This goes to show that nothing beats customer research. I'm going back to genuine paper.

BEFORE cleaning




AFTER cleaning




I removed the o-ring before spraying it this time, because the last time it swelled up and I had to let it sit for a few hours before it fit again. Used strictly MAF cleaner.

[highoctane]

When I cleaned my maf sensor with crc, the wires did not come up shiny new, they are still a dull brown and thats after 2/3 of the tin. Is it replacement time?

[highoctane]

Are there any ways I can test the resistance of it? Surely there are specific tests I could do with an ohm meter?

[Luxi46]

When I cleaned my maf sensor with crc, the wires did not come up shiny new, they are still a dull brown and thats after 2/3 of the tin. Is it replacement time?

Not necessarily. Try holding the nozzle closer, about a centimeter and spray with short bursts. As it is a heated wire, all the dirt can become crusted so it might take a bit longer to come off.

Are there any ways I can test the resistance of it? Surely there are specific tests I could do with an ohm meter?

Yep, here you go. Click to expand:





Hope this helps

[8Brad8]

Hi all,

Boxhead you mentioned that the MAF sensor should read close to .37 gm/sec key on engine off, my 2013 D4D (6000km) reads .28 gm/sec engine off and 15.48 gm/sec at 81c idle, after reading through the techstream data threads these readings seem a little out of spec, or are these pretty normal for a vehicle this new?

Any info/thoughts would be much appreciated.

Brad

[boxhead55]

Yep spot on

[ibm450]

Imho disel Hilux = high maintenance

Petrol hilux gives almost the same performance a little more thirsty but the cost of continuous maintenance of diesel quickly catches up to the same as a petrol hhilux in fuel wise but petrol has far far less issues and minus the embarrassing loud noisy motor.

[Talktheroo]

I don't know whether this has been mentioned.
I am finding that a lot of snorkel installers are using the building type silicone sealers.
This will coat the hot wires and give you a false reading. The gas as it dries out.
So, consumers beware of this and make sure they use an auto sealant when they fit your snorkel.
The Roo.