Comments on: Cleaning the MAF sensor on a Corolla

By: d.a.

d.a. — Wed, 07 Nov 2012 23:28:22 +0000

selva
you are right. before checking your MAF sensor make sure your air filter is clean . cleaning the MAF sensor will be useless if your air filter is dirty/plugged.

By: David Vielmetter

David Vielmetter — Mon, 15 Oct 2012 15:15:12 +0000

If you disable your maf sensor you’re asking for problems:

- at best, you’ll get a constant check engine light.
- at worst you’ll cause permanent damage to your emission system.

Wouldn’t ever recommend disabling any sensor on the corolla.

David

By: monching22

monching22 — Sun, 14 Oct 2012 07:14:28 +0000

what if i disable my maf sensor?

By: selva

selva — Tue, 21 Aug 2012 01:51:53 +0000

Latest cars that controls by computer has the MAF sensor in the Air box ( I am not sure about 93 corrola But only thing I know is previously they used MAP (manifild air pressure sensor) and lately they are usinf MAF manifold aire flow, Can be found between the air filter box and manifold maninifold. In my 2000 corrola it is in the Air box. It has 4 wires connected. twowires goes to a themo couple to sense temperature and other two fine thin heating wires. those heating wires were covered with calcium like dirts. first I thought those dirts were part of the sensing system. after i cleaned I realised that sensor is just two metal heating wire and nothing else.

I also amazed how these flow sensor works. computer sends a voltage through this elements to keep the elements at certain temperature. as the flow increases it needs more current to keep the temperature constant . computer calculate the flow by measuring the current and the air temperature.

How you clean these wires are up to you. But keep in mind thes wires are very thin don’t damge it
You will see a big differnce in performans after clean it
Symptom of my trouble is
1. PO 0171 check engine trouble code
2. stumbles on accelaration
3. Automatic tranmission chattering and jumping during accelaration ( this may not be a happening to every one)
P:S- Keep a clean air filter before suspecting the MAF sensor

By: David Vielmetter

David Vielmetter — Mon, 02 Jul 2012 23:36:41 +0000

Hi Tiffany,

Unfortunately I have no idea where the MAF sensor is located on a 93 corolla. Mine is a 2004 and I know where to find it on models 2003 and up only. Perhaps take it to your mechanic and ask him.

Cheers,
David

By: Tiffany

Tiffany — Mon, 02 Jul 2012 16:14:24 +0000

Hi there your info regarding the MAS sensor on a 1993 corolla was helpful, however on our 93 corolla we cannot locate where it is and the picture does not give us enough info.

Thank you Tiffany Zuck

By: Adrian Ahuja

Adrian Ahuja — Sun, 24 Jun 2012 16:34:20 +0000

Thank you!!!!! Cleaning the MAF that work my car was diying if you was pressing the gas paddel for fast take off after I cleaning check engine light when off; before I cleaning I have codes for Oxygen sensor & ramdon misfire but I check sparks & was fine; like I said after I cleaning all the codes when off; do not forget to unplug the battery for few minutes to reset the engine computer.

By: David Vielmetter

David Vielmetter — Mon, 14 Nov 2011 22:47:20 +0000

Travis,
The problem is that your MAF sensor wasn’t completely dry when you re-installed it. It has happened to me a couple of times and all I needed to do was leave it to dry out a bit longer. Then of course I had to reset the stupid check engine light by disconnecting the battery for 10mins and then had to re-program all my radio stations. MAF sensor cleaner is essentially the same as electrical parts cleaner (I think – please don’t quote me on that). It’s a fast drying liquid cleaning compound that shouldn’t leave residue behind. Try resetting your check engine code and see if it comes back. If it does, your MAF sensor probably needs replacing…otherwise it was probably just wet when you put it back.
David