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Old 04-24-2003, 08:05 AM   #1 (permalink)
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Mass Airflow Sensor - 2000 Corolla

OK guys, got a question here. A friend of mine needs to replace the mass airflow sensor in his 2000 Corolla. Is this a difficult job, and can someone do it themselves? The shop wants a half hour labour, which suggests to me it is a simple job.

Also, how about sources for parts? Toyota wants $270(Can) for the part. Are there any alternatives? I'm in the Toronto area if you have any shops in mind.

Thanks for your help.

Todd
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Old 04-24-2003, 11:11 AM   #2 (permalink)
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I don't know of a cheaper place to get it.. other than looking on-line or ebay..

but it shouldn't bet that hard to replace... it's right on the filter box.. in plain view.. should be a simple swap

why does he need it replaced though?? they rarely go
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Old 04-24-2003, 11:58 AM   #3 (permalink)
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Quote:
Originally posted by bzride
I don't know of a cheaper place to get it.. other than looking on-line or ebay..

but it shouldn't bet that hard to replace... it's right on the filter box.. in plain view.. should be a simple swap

why does he need it replaced though?? they rarely go
The engine bogs down when he steps on the accelerator, the revs then pick up and off he goes. It was in for service yesterday and the technician identified the problem as being the mass airflow sensor.

Todd
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Old 07-30-2004, 07:47 PM   #4 (permalink)
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My 2000 Corolla was idling rough. I read you could clean a MAF sensor with electrical contact cleaner spray (don't touch the little wires!). It's easy to remove...one connector and 2 screws. I noticed an instant improvement.
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Old 08-28-2004, 07:14 AM   #5 (permalink)
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Hey, just wondering if your MAF is working okay still. I had the same problem on my 2000 Corolla and Toyota cleaned the MAF then said that if it works well for a while, it is still faulty and should be replaced but a local shop that specializes in Toyotas, Hondas and Mazdas says that they regularly clean the MAF as part of their maintenance and it probably doesn't need to be replaced.

No Mill Code came out on the diagnostic either. I'm thinking that Toyota instructs their mechanics to replace it regardless.

Anyway, I opted to wait and see how the car performs - it's been normal for a week now.
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Old 08-28-2004, 07:54 AM   #6 (permalink)
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My buddy ended up getting it replaced. Car runs just fine now.

..Todd
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Old 06-17-2005, 07:39 PM   #7 (permalink)
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Canada

I blasted my MAF Sensor with Canadian Tire Carb Cleaner and it runs perfect (so far).

The car was hesitating off-the-line and idling rough. This simple fix has the car running like new.

2001 Corolla CE

Thanks for the tips, guys.

-Howard
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Old 06-17-2005, 09:25 PM   #8 (permalink)
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punk,

your friend shouldve cleaned it first before buying a new one, that normally works for everyone with that problem. sometimes it takes 3 cleanings before people stop having the light come on. in my case the cleaning didnt work so I had to buy one for $75 online shipped.


howard,

if your carb spray had silicone in it that will confuse the sensor and it will need to be cleaned off with either contact cleaner or throttle body spray.
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Old 06-17-2005, 10:09 PM   #9 (permalink)
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Just to let everyone know - almost a year after they cleaned my MAF sensor it is working well. If it acts up again, I'll blast it clean!
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Old 06-17-2005, 10:24 PM   #10 (permalink)
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i have the same problem only that it gets a lot worse when it rains.


What may cause an engine to sputter and hesitate when its raining?
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Old 06-18-2005, 12:48 AM   #11 (permalink)
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mine failed, tony on cc's failed, and a few others.. it's a common problem.. Dixie toyota has sold over 300 maf sensors this year!

I've already washed my maf sensor out.. over and over again.... with that.. it didn't help mine .. so I had to replace.

Last edited by rated_w; 06-18-2005 at 12:50 AM.
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Old 06-18-2005, 06:49 AM   #12 (permalink)
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01loadedLE,
What symptoms should I be looking out for? As I said, after I cleaned the MAF and let it dry, replaced it and it's running fine.

I'll let you know if anything changes.

Thanks again, guys.

-Howard vbmenu_register("postmenu_764265", true);
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Old 09-03-2005, 10:41 AM   #13 (permalink)
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great to see people have finally found a fix for this hesitation.

i'd been searching the forums here and encountered many people with this problem.

i, myself had just been through the typical tune-up procedures and was banging my head against the wall.

the wife's got a 2001 with the stumble upon acceleration. no codes given.

i'll try to clean the MAF sensor today and check back in.
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Old 09-03-2005, 12:55 PM   #14 (permalink)
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quick update.

cleaned MAF sensor, no improvement.
according to the tests in the Haynes manual, the sensor checks out OK. it did say that the sensor could still fail despite the tests given.

checked for air leaks, none found.

any other alternatives?

i hate to get the dealer involved (college town, rip-off artists extraordinairre) if i don't have to.

let me know if there's anything else i can try. i'm beginning to loathe the toyota.
[bangs head]

TIA
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