2007 Toyota Corolla Mass Air Flow Sensor/ System too Lean

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mongo41
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Joined: Tue Feb 05, 2013 3:42 pm

2005 Mazda RX-8 Oil foams

Unread post by mongo41 » Tue Feb 05, 2013 3:46 pm

I have a 2005 RX-8. After running it on the freeway at 60-75 mph's, when I check the oil, it is foamy, like the foam on a Starbucks latte. After I wait for a few minutes for cool down, the oil is fine. I have not had a need to add any oil. What could be causing this?

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Karl
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Joined: Thu Oct 11, 2012 3:43 pm

Re: 2005 Mazda RX-8 Oil foams

Unread post by Karl » Tue Feb 05, 2013 5:35 pm

Is the oil discolored at all when it cools down and the foam is gone?

Is the engine oil OVER full?

mongo41
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Re: 2005 Mazda RX-8 Oil foams

Unread post by mongo41 » Wed Feb 06, 2013 8:52 am

The color of the engine oil is normal and the level is good...not over full and not where I need to add any.

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Karl
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Re: 2005 Mazda RX-8 Oil foams

Unread post by Karl » Wed Feb 06, 2013 7:17 pm

OK. Foam is caused by the oil getting aerated.
The only thing other than an internal engine problem i have ever seen is a bad oil filter.
Try changing oil with a different brand filter than you have now.

ewwjunior
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Joined: Thu Apr 11, 2013 4:15 pm

2007 Toyota Corolla Mass Air Flow Sensor/ System too Lean

Unread post by ewwjunior » Thu Apr 11, 2013 4:17 pm

I recently bought a 2007 Toyota Corolla LE and the check engine light went on a week after my purchase. I took it in right away and was told it was a faulty Mass Air Flow censor. I got it replaced and the light came on again 10 hours later. I took it back, they said it was the Mass Air Flow Censor, again, and they kept it for a couple days. Said I was good to go. The light came on again an hour later. I took it to Autozone to have it scanned and it said SYSTEM TOO LEAN. I called the dealer and they said maybe the air filter cover was not on securely, I lifted it and put it in the slots and back on completely and he said maybe it would go off after a number of "cycles" it is still on... What should I do?

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carriedi
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Re: 2007 Toyota Corolla Mass Air Flow Sensor/ System too Lea

Unread post by carriedi » Thu Apr 11, 2013 7:33 pm

you might try to see if there are any air leaks between the MAF sensor and the intake. or any vacuum leaks else where for that matter. Where did you get your replacement MAF? some recommend you get the OE for the best chance of getting the right performance. The lean code is when the computer looks at how much air enters the intake and it's programming says that a measured amount of fuel goes with that amount of air. The O2 sensor reads the exhaust and sees if the computer is correct. Too lean means the O2 sensor is telling the computer that it is not getting enough fuel to run correctly. so either there is a vacuum leak after the MAF, The MAF is reading wrong or there is a problem with the engine not getting enough fuel,

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ProTech
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Re: 2007 Toyota Corolla Mass Air Flow Sensor/ System too Lea

Unread post by ProTech » Thu Apr 11, 2013 7:35 pm

You should take it back to them and make sure they fix it correctly. They are obviously missing something, but since you've paid for a repair they said would fix the car, they should be on the hook to have to take care of you now. When the car is running lean, it's getting too much air, or too little fuel. This is normally due to something wrong in the intake path, such as your Mass Airflow Sensor. Vacuum leaks, or incorrectly installed air filters, lids and ducting can do this too.
GM Dealer Technician For 18+ Years
In the automotive industry for 20+

tufail123
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Joined: Thu Oct 30, 2014 12:10 am

Re: 2007 Toyota Corolla Mass Air Flow Sensor/ System too Lea

Unread post by tufail123 » Thu Oct 30, 2014 12:17 am

That is a sign of something drawing a lot of current. So, when you touch the battery cables, whatever is doing that is turning on or trying to operate. Check for a current draw with a test light, not an amp meter since that kind of draw will blow your meter, inline with one cable. This will show what is drawing current. Then you can start removing fuses until the draw goes away to find what circuit is hot.

toyomasterthing
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Joined: Mon Oct 05, 2015 4:25 pm

Re: 2007 Toyota Corolla Mass Air Flow Sensor/ System too Lea

Unread post by toyomasterthing » Mon Oct 05, 2015 4:33 pm

check code , they have been having problems with the intake gskt leaking. easy to find, while running hook up scanner and watch fuel trim and spray quick start around intake gskt. If yoy see the fuel trim drastically move that's your problem.

pierredup1
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Joined: Sat Apr 22, 2017 7:02 pm

starter on Matrix 04 do not crank when engine is warm

Unread post by pierredup1 » Sat Apr 22, 2017 7:07 pm

I owne a Matrix 04 i got problem with the starter when the car is cold everything is normal crank and start but when we run for a little try to start and nothing no sound no crank

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carriedi
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Re: starter on Matrix 04 do not crank when engine is warm

Unread post by carriedi » Tue Apr 25, 2017 11:29 pm

the starter has two wires going to it. The big one is from the positive from the battery. that's the power to crank the starter over. Then there is a small wire. The small wire is from your ignition switch. Check to see if you are getting power on the small wire when you are starting the car. If the small wire shows that it is getting battery power when in the crank position then look at a bad starter. If you don't get battery voltage when the key is in the start position you will need to follow the circuit back to where there is power and find out where the loss of power it at.

pierredup1
Posts: 2
Joined: Sat Apr 22, 2017 7:02 pm

Re: starter on Matrix 04 do not crank when engine is warm

Unread post by pierredup1 » Wed Apr 26, 2017 12:37 am

I find the problem the solenoid was defective we bring the starter to the autopart store put on the testing machine run the test 3 times the starter pass everytime come back home retest before reinstall on the car work 2 or 3 time and after dead one more time hit the solenoid restart working for a little finaly put a new starter and everything is ok now

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