Q: Air suspenion compressor is not working

The AC system is a sealed system, so you are correct to believe your Cadillac may have a leaky AC if you are experiencing a problem. The more common leaks are usually found right behind the front grill where the...

Knowing the year, make, model, and engine size would help to come up with a better diagnosis. Typically, you are having a problem with the fuel pressure not staying up if the car is allowed to sit for too long....

You will need to have Check Engine Light (https://www.yourmechanic.com/article/the-check-engine-light-demystified) tested and diagnosed to see what the code is. You may be having a cooling fan issue or some other problem that is causing the light to illuminate and the A/C...

It is recommended to replace distributor cap and rotor (https://www.yourmechanic.com/services/distributor-rotor-and-cap-replacement) at the same time you are having the spark plugs and spark plug wires replaced. The cap and rotor contacts will wear down just like the spark plug electrodes wear...

Sent to CS for billing question about removing dents in a door and fixing a door that is stuck.

Depending on the make and model of the vehicle, the radio, clock, and dome ,lights may be on the same circuit and can be as simple as a blown fuse, or fuses. Sometimes there can be more than one fuse...

Hi there. Check the courtesy light switches on the doors to the vehicle. It seems that one or more switch may have a bad ground or a bad contact in the switch causing the courtesy light to come on while...

Hi there. To be honest, when the alternator tests as good and the battery terminals are good, this issue is typically very difficult to diagnose. In most cases however, this is either an electrical relay fault to the charging system...

You're right in that the crank sensor (CKP) is the primary trigger for the injection pulse. But the only way to reliably check the CKP output is with a scope. If you don't have a scope, all you can check...