Q: How to repair issue below?

asked by on

2006 Mercury Mariner 3.0L, after reaching normal temperature, starts a continual, erratic drop in rpm due to IAC valve slamming shut. White/red lead has a continuous 12V, other lead has 10V and intermittently loses voltage enough to see meter needle move. Can Hear Valve slamming even better with air filter holder open.

My car has 141500 miles.
My car has an automatic transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. How to repair issue below?

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: SUV getting only 15 mpg

It is possible that your tire pressures may be low and went unnoticed by the technician who last serviced your vehicle. I would recommend having your tire pressures checked because, if they are low, it could potentially cause both of...

Q: Car makes noise when going over 50 mph

It is very possible that you can have a faulty wheel bearing on your vehicle. I would recommend having your vehicle inspected by a qualified professional to determine if your wheel bearings are functioning properly. Wheel bearings can often make...

Q: Why wont the fan start? Smoking near fan, cooling fan new but wont start. engine overheats.

Hey there. As you alluded, this is a sign of a bad cooling fan relay switch. The cooling fan relay switch comes on when the temperature reaches a certain level to help cool down the radiator. When this is faulty,...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...