Q: Engine shuddering and groaning

The OBD system on your vehicle is a self-monitoring system. The Powertrain Control Module monitors and controls all of the systems and functions that regulate fuel, ignition, emissions, and engine cooling as well as having some minor control over air...

Hi. Oil/coolant intermix is a bad sign. This means that coolant is leaking down through a cylinder into the crankcase. This usually indicates a blown head gasket or cracked cylinder head. The head gasket seals the engine combustion chambers as...

Performing an engine teardown and rebuild is a high magnitude job. Even for a skilled mechanic, there are often little problems just like the one you are experiencing that usually occur afterward. This is especially true if it is your...

If you car is overheating after 20 minutes of driving, I would first recommend checking to make sure that the cooling system is properly topped off with coolant. If your car is doing this continuously, I would recommend having a...

Hello. The stopper assembly is an essential, required part (the "stopper" is not a cosmetic cover). If the vibration started after you installed the aftermarket mount, the cause of the vibration is the aftermarket mount and you should remove it....

Hello. From that test, I can determine that the charging system, as in the alternator, is fine. The voltage of the battery itself is very low, however. The starting volts are dropping way below the minimum, which means that the...

Hi there - the EPS, or electronic power steering (https://www.yourmechanic.com/question/my-eps-light-is-blinking-by-billy-r), is the electrically assisted power steering. A malfunction or failure of this system could suddenly make steering effort more difficult or possible freeze the steering. This is a safety issue...

Hi there. Depending on the year of your Corolla, it is possible that you have an electronic throttle control. If your battery was dead, and you replaced the battery, it may have damaged the Electronic Throttle Sensor or throttle control....

You may have problem with the transmission or throttle control and will need to have the computer tested for fault codes that will point to the possible fault and lead to further testing to pinpoint the cause. You may have...