Toyota
Corolla
53

Cleaning May Correct Faulty Mass Air Flow Sensor on Toyota Corolla

Problem Description and Possible Solution

The mass air flow sensor on higher mileage cars occasionally needs to be cleaned or replaced if sluggish acceleration is experienced or the Check Engine Light is illuminated with a mass air flow meter sensor fault code stored.

Problem Data
RepairPal Verified
Average mileage: 107,564 (30,000–196,000)
Engine affected: 1.8L 4 Cylinder
13 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
53 people reported this problem
Comments
Viewing 1 - 20 of 26 comments
Engine has low power, and does not accelerate. Hesitates at times. Engine light is on. Sometimes engine stops running when slowing down or stopping on intersections. Sometimes it would run but RPM is steady at 1,000 to 2,000 RPM's and at 10-20 miles per hour speed, until you restart the engine and it would run normal again for sometime.
1. Cleaned MAF sensor: did not fix the problem
2. How to make sure that MAF sensor is faulty and need to be replaced?
3. Any recommendation?
Engine has low power, and does not accelerate. Hesitates at times. Engine light is on. Sometimes engine stops running when slowing down or stopping on intersections. Sometimes it would run but RPM is steady at 1,000 to 2,000 RPM's and at 10-20 miles per hour speed, until you restart the engine and it would run normal again for sometime.
Looking for suggestions to resolve this problem.
Cleaning MAF Sensor didn't fix it. How to make sure that MAF sensor is faulty and need a replacement?
Lucia
2001 corolla. Does not accelerate rapid (excuse my English), but the worst problem is that the engine does not start when hot. In the morning starts ok, when I stop the engine after a trip, if I try to start it again before it gets cold, it does not start.
Chech engine light is on.
I disconnected the O2 sensor and nothing happened.
I put a new fuel pump too. I measured all four injector's coils,.they are ok.
Help! Please
The Check Engine light came on with MAS and Bank 1 too rich trouble codes being reported I cleaned the MAS with just canned air and the problem went away for three weeks before triggering the Check Engine light again. I am wondering if the OEM air filter that was installed about 3000 miles ago is defective and restricting the airflow so I just changed it out. I am also wondering if there may be some particles being released from the secondary charcoal air filter that may be collecting on the MAS wires that is causing a recurrance of the check engine light. I will be waiting to see if the light comes back on any time soon.
it idles rough ans smells like gas, when the car is running, when i come to a stop it stutters like it is going to shut off. it is still not fixed
Check engine light came on. Mechanic "found internal short of mass air flow sensor." Replaced. Car had been idling high and had increased gas consumption.
Sluggish acceleration while driving and starting in the morning. Removed and cleaned MAF and ran like new.
I'm experiencing rough idle and sometimes sluggish acceleration.
I have tried to clean the throttle body myself with cloth and a little petrol as I could not get a throttle body cleaner. Then I relearned it after that. But I'm not sure the problem is entirely fixed as it still is sluggish sometimes..and idles high attimes
MY CHECK ENGINE DASHBOARD LIGHT CAME ON YESTERDAY. HAVE NOT EXPERIENCED ANY DIFFICULTIES THOUGH. PRAY THE light just goes out. At lease that I can pay for. :-).
Mass air flow sensor was bad. Lean condition bank1 code. replaced sensor. Happened again about 4 years later.
almost stalls when starting up first thing. Almost stalls after waiting at red light then going again.
hesitant acceleration and high RPM in 1st 2nd gear running rough until 3rd gear have tranny fluid changed on friday may clean or replace my MAS and hope it works
bank 1 running to rich replaced 02 sensor and maf sensor still same problem rough idle terrible gas milege and engine shakes at certin speeds
Ongoing problem that manifested itself during -30 to -40 degree days in winter now comes on in summer as well. Codes p0102, p0113 and p0171 have been observed. Cleaning MAF worked for a little while with CRC cleaner but codes keep coming back. Considering replacing MAF since wiring appears to be fine.
cooling fan keep run when i turn key on
mass air flow had to be replaced -- check engine light was on
I haven't taken care of it yet, the cost they quoted me was $429.00. Too high.
Still work in progress. Changed sensor, spark plugs. Need to pump acellorater pedal when it starts to cut out on freeway on ramp. Will take to a certified dealership mechanic to resolve
Shortages water in the cooling system
Cleaning the mass airflow sensor with MAF cleaner worked for a couple weeks and it improved pickup and reduced engine ping, but it returned a couple weeks later.