Q: Overheating and heater not working

Many electrical problems can be caused by a dead battery. If you are experiencing strange electrical problems, I would have your battery and alternator tested. I recommend having a technician from YourMechanic come out and load test the battery and...

Hello. The A.I.R. system is an emissions system that is designed to inject air into the exhaust manifold to help with the combustion of any unburned fuel before it reaches the catalytic converter, resulting in cleaner emissions. In order to...

Hi there. Check the air idle control valve (IAC (https://www.yourmechanic.com/services/idle-control-valve-replacement)) and see if its plugged in or if the vacuum line is cracked. If the IAC is working, check for any additional vacuum leaks that the engine could have. If...

Hi there. Unfortunately, without being there to complete a gears are difficult to change inspection (https://www.yourmechanic.com/services/not-able-to-change-gears-inspection); any guesses on what's causing this problem would simple be a guess and not very responsible on our part. It could be something as...

The oil pump is behind the harmonic balancer/crankshaft pulley and is bolted (approximately 8-10 bolts) to the front of the engine block. Prior to suspecting an oil pump fault, use an external pressure gauge to measure actual oil pressure at...

Hi there. As the temperature increases inside the transmission, the fluid will expand; which is why the fluid level on the dipstick is higher when you check it. The goal is to follow the manufacturer's recommendation on amounts of fluid;...

Hello, thank you for writing in. There may be a few different things going on. First and foremost we need to make sure the throttle is not sticking and that the brakes are complete released. If the issue is more...

Hi there. The coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement) on most Ford (Mercury is a Ford product) V-6 engines is located on the intake manifold, front of the motor and next to the primary coolant hose. If you don't have one currently,...

Hi Renee. Thanks for contacting us today. The Shifter Position Switch and Neutral Safety Switch are one in the same, but I don't think that's the source of this type of problem. Typically when that component fails, it causes all...