Q: What controlls the IAC valve

I'm curious why you would want to do this and because of the potential liability with something like this. I'm going to say your on your own with such a project. When ever we decide we want to modify our...

If there was no or little oil, that means you had, and still have, a leak probably through a seal or gasket- although sometimes differential or transmission cases can crack and leak that way, too. Knocking sounds of course signify...

Hi there: The P0172 OBD-II error code (https://www.yourmechanic.com/article/p0172-obd-ii-trouble-code-system-too-rich-bank-1-by-blake-griffin) indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber. The ECU uses a number of instruments, such as the mass air flow sensor (MAF),...

Hello, thank you for writing in. With the new module you installed, there is likely some other issue with an input to the computer. Either that or the computer itself is having issues. You can only test the computer by...

Hello, thank you for writing in. When dealing with an issue with the starting system, you want start by making sure the battery is in good condition. Make sure its cables are clean, dry, and tight as well. You can...

The power steering pump and the alternator which charges the battery are driven off of the same serpentine belt. Therefore, the first thing to check is the condition of that belt and whether belt tension is adequate. If there is...

Hello, thank you for writing in. Correct, you want to place the hose clamp between the two raised lips. If the hose will willfully go over the second lip, that is fine. The goal is to have the hose beyond...

It's possible that an exhaust component is leaking and/or is loose. This can be determined by a visual inspection and if you desire such an inspection please request an engine noise diagnostic - suspected exhaust leak/loose mount (https://www.yourmechanic.com/services/engine-is-running-louder-than-normal-inspection). If you...

Any fault/error (or damage to the vehicle) that will affect drivability or vehicle performance "can" cause reduced power. Consequently, the codes that have caused the traction control warning light to illuminate should first be downloaded and if those codes implicate...