Skip the auto shop - Our mechanics make house calls

Q: MAF need replacing

asked by on

Have an ST170. Upon slowing down, idle goes high and then drops, have done brakecleen test on gaskets & seals and also MAF cleaned with MAF cleaner as was quite dirty. Idle is now only rising to 1500rpm instead of 2000. Sometimes it still holds high idle, other times it drops normally. Could the MAF need replacing?
My car has a manual transmission.

A: This may be related to the idle air control...

This may be related to the idle air control which regulates the air flow into the throttle body as it is mixed with fuel prior to being injected into the motor. When this is not working properly, this will cause the motor to stall or idle erratically. I would recommend having an expert from Your Mechanic come to your home to diagnose and repair your idle air control valve.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: AC will not recharge

I would ask for help from one of the mechanics at YourMechanic. They can come to your location and diagnose why your a/c is not working. Most likely, it is a leak of some sort due to the age of...

Q: How does the Roll Stability Control™ system work?

Your vehicle offers several different control systems to make driving safer in a very wide range of conditions. One of those is the Roll Stability Control™ (RSC) system. RSC is designed to help enhance stability, which is necessary because of...

Q: Poor shifting the first few minutes every time

If the transmission is only acting up when you first start up and until the transmission warms up a little is going to be the seals and Teflon rings inside the transmission are leaking fluid pressure most likely. The leaking...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...