Q: Differential makes a whining noise when ever the car is moving (accelerate or decelerate)

Purchasing a new set of tires (https://www.yourmechanic.com/article/how-to-buy-good-quality-tires) can be an exciting moment, though it may take some time for the sticker shock (https://www.yourmechanic.com/article/how-to-negotiate-the-price-of-tires) to wear off. You may have chosen the tires for your car based on cost, performance (https://www.yourmechanic.com/article/understanding-tire-service-descriptions-speed-rating-and-load-index),...

If the onboard computer can't communicate with your scan-tool it could be a few different problems, it could be that the on-board computer isn't getting the proper power or grounds, this would also explain the no-start. Have a certified mechanic...

If starting it today was the first time after changing your oil, the oil filter and oil galleries were empty for a few seconds. If this is the case, the Check Engine Light is reflecting the lack of oil pressure...

What your mechanic says sounds more likely. There is no gasoline flowing to the turbocharger, so a flange or gasket leak is unlikely to be the cause. A leaking turbo flange would give you an exhaust leak and any odor...

Generally, there are only a few places for leaking transmission fluid to go to since it does not burn off inside the transmission, unlike motor oil inside an engine. You have already ruled out the possibility of an external leak...

Hello, thanks for writing in about your 1991 Volvo 740. I would suggest checking all of the speaker wire connections as these often times run underneath seats and sometimes have more than one connection to get to the stereo. It...

Hello - when you say that the lights dim while trying to start the engine, I suspect that the battery may not be strong enough (https://www.yourmechanic.com/question/my-car-isn-t-starting-it-s-really-cold-out-i-was-wondering-how-can-i-start-it-with-this-cold-weather-by-rainny-c) to spin the engine fast enough in low temperatures to catch and run. With...

Hi there. In most cases, what you are describing is caused by an exposed electrical wire somewhere in the AC system or even perhaps the center console. This can cause warning lights or other indication lights come on occasionally when...

It could be that your transmission is in "limp home" mode. If the controller has sensed a problem with second gear, like slippage, it may skip second gear to enable you to drive the car. Scanning the car for trouble...