Q: AC only blowing out hot air

Your car’s air bag supplemental restraint system (SRS) is designed to deploy the air bags during certain types of impacts. They will not activate in all accidents, even if they seem like they’re severe enough. Here’s what you need to...

Hi. The transmission range sensor (TR) receives a reference voltage from the transmission control module (TCM). The sensor then varies that voltage according to the position the gear selector (P, R, N, D, 2, 1). In this way, the sensor...

Hi, over time the tumblers in the lock cylinder can wear out or get debris lodged preventing rotation. The notches on the key also wear out over time which doesn't fully unlock all of the tumblers preventing the key from...

Some economy late model vehicles, like the Sentra you are considering, are not equipped with keyless entry. I highly doubt the owner lost the remotes. It is possible to buy an aftermarket keyless entry system (https://www.yourmechanic.com/article/how-to-purchase-a-remote-keyless-entry-system-for-cars-by-brady-klopfer) and have it installed....

You've got to find where the leak is (https://www.yourmechanic.com/article/how-to-diagnose-a-fluid-leak-by-mark-vallet) coming from. Power steering pumps (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-power-steering-hose) put out 1500 PSI or more at times. So, wherever the leak is, you are going to see it squirting out. From there you can...

Hello. It sounds like the oil is thinning out due to the heat of the engine when the car is operating at high speeds. This will result in the low oil sensor giving a false reading. There could also be...

Hi there: On a carburetor powered V-6 it is very likely that your choke or idle adjustment screw on the carb is dirty and simply needs to be cleaned. If you've never done this before on your vehicle, it might...

It sounds like you may have a faulty fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement) or a bad fuel pump relay (https://www.yourmechanic.com/services/fuel-pump-relay-replacement). The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the...

Hello, thank you for writing in. The check engine light illuminates when the vehicle's computer runs tests and detects and issue. The vehicle is constantly running tests on every system in the vehicle. Therefore it is hard to determine which...