Q: How can I check the wiring to the iac can I use one of them lights that a red light comes on

The all-wheel drive (AWD) lock light means that the all-wheel drive system (https://www.yourmechanic.com/article/how-all-wheel-drive-works) is locked. In this condition, power is continuously sent to all four wheels. On the other hand, when the system is in auto all-wheel drive, the distribution...

The variable valve timing system uses oil pressure and solenoid control. If the system is not working properly or the oil supply is restricted to this system a knocking noise can occur which can get louder on acceleration and if...

Hello. This may be a sign of a failing idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement). The idle air control valve is located on or near your intake manifold that monitors the air intake as it is mixed with fuel prior to...

If you are getting a pulsation in the brakes when applied at high speeds then you most likely have warped front brake rotors or they have hot spots on them that cause the pulsation. Inspect rotors and look for discolored...

Hi there. To determine if the injector is not working properly, either you can perform a cylinder cut out test on your injection system or you can swap your injector on cylinder number 5 with another cylinder and see if...

It sounds like you may have a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator charges the battery while the engine runs by generating amperage and recharging the battery while the engine turns...

The OEM pump, that is AC DelCo, might give longer service life. Pump life would be degraded if there is a poor ground connection or a voltage drop on the electric supply line to the pump and/or pump output restrictions...

Since you have a check engine light on with other problems noted then I suggest you get the system scanned to get the stored codes to see if a sensor or wiring problem is cause of problem. Your vehicle is...