2009 toyota corrolla 1300vvti valve noise when car is cold so what is the prob and solution

bettr get a new timing chain-will break soon and hurt motors valves--put a new water pump and engine seal at same time-save$--hav an xperiencd independent du the job--dealers are usually troubl

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Toyota Corrolla did not make 4 wheel drive ??

No idea without hearing it to be honest but if you suspect the engine and not the gearbox then try adding a can of STP or wynns oil additive and see if this stops the noise ,if it does then you know that you have a oil pressure relief valve problem as the engine is not holding oil in the filter and its all running back into sump ,but a grinding noise ?? could be a bearing on teh timing belt or something and without hearing the noise i just couldnt tell you

it will be the electrical item in line from your air filter housing to the engine intake manifold, normally part of the lid or in the pipe. With at least 4 wires coming from it. Hope this helped..

I have a 2009 with the same problem that the dealer told me was "normal" engine noise. BTW, our loaner does not have this noise.

Timing belt is on the front of the engine inside timing cover. This is not a job for a novice, as the belt must be exactly right to avoid engine damage. Replacement takes several hours labor for a good mechanic.

AC clutch relay, located in the under the hood in fuse box. $11 rockauto.com

Hello. The P-0300 indicates a multi-cylinder misfire. The P-0171 code indicates a dirty Mass Air Flow sensor.

Remve the MAF from the intake tube, between the air filter box, and the throttle body. Inspect the interior of it, look for 2 small wires. If they are dirty, or fuzzy, clean them by spraying brake cleaner on them, until they are clean. Don't use compressed air, you will damage the wires. After the sensor is cleaned, reinstall it and drive the car. The clean wires will then retransmit the correct airflow, and the computer will re-learn the correct values.