Corolla GLI 2010 Rpm issue

[jawadkkhan19]

Asalam Walaykom ! I recently bought a Corolla GLI 2010 and the problem I am facing is that it's Rpm is dropping down and then coming back when idle or in 1st gear at stop usually in traffic.What can be the problem and it's solution?

[rajaahmed96]

IACV problem. If anyone has fiddled with the throttle then it happens. Better take the car to toyota dealership, they may clean it and then calibrate it through Toyota Scan Tool.

[sameerulhaq064]

Your MAF sensor has either gone bad or is dirty.

[rajaahmed96]

MAF sensor has nothing to do with rpm drop or idle rpm.

[khuram2703]

Make your Throttle body inspect / clean . Still if the problem persists prior to there is no check engine light and no fault codes, then there is abnormal valve sinkage. An indication of worn out valve lifter as its tappets are hydraulic. (Usually happens with high milage corollas).
Ask the mechanic to perform compression check

[jawadkkhan19]

But its only 87k driven

[khuram2703]

With the wrong oil grade it can happen at this mileage.....
Compression check will reveal wherher Cyl head is ok or not

[aziz.rehan]

Check spark plugs
Injectors
Clean throttle body
Clean mass air flow sensor with maf spray cleaner,watch on youtube(make ur car run better with little spray cleaner).
This model has electronic throttle so initially going in first gear rpm drops little.

[arcane3888936656]

First acceleration sensor fault
This model has no wire for acceleration paddle n runs on wireless sensor n often drops acceleration due to some fault in sensor. Cleaning reprogramming or refreshing through computer is solution. If all these don't work then go for throttle , plugs, etc