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Optra

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OBD support
Hey there. If you have the OBD-2 connector under the dash directly under the steering column, then the ELM327 will work to scan the vehicle after you download the app. I can tell you that this adapter is very cheaply...
Question
Engine heating issue.
Hi there. From the description you provided, it would appear the engine does not have a head gasket problem from being overheated. If the temperature climbs above the middle point while the vehicle is at a stop it could be...
Question
COOLANT RESERVOIR IS STEAMING HOT
Hi there. Most of the time when you see "steam" coming from the overflow tank, it's due to higher than normal or overheating problems within the coolant system. As you know, when coolant and water reach "boiling temperature", water evaporates...
Question
Car Loses Power And Puffs Out Large Amounts Of Black And Grey Smoke, First Backfire Was Very Loud, with sulfur/exhaust fumes smell.
Hello There, This is quite likely a sign of a failing or clogged catalytic converter. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When this is clogged, this...
Question
My car won't turn over dash lights come on but won't attempt to turn over
Hello, thank you for writing in. In this type of situation, you have to worry about locking up the engine. You can blow a head and cause the engine to seize up internally. This can lead to an expensive repair,...
Question
Smoke from engine cooling fan
It's not unusual for a fan to fail, and you can probably get away with replacing just that. But since the fan seized, there may be a blown fuse or fusible link back in the system that will also have...
Question
Approximately, how long will a warranty last on a replaced or resealed valve cover gasket?
The engine valve cover gasket should last for about 8 to 12 years. If the gasket is leaking, then the PCV (Positive Crankcase Ventilation) valve is plugged up causing the engine to build up too much crankcase pressure blowing out...
Question
Excess Vibration Front Wheels; knocking sound when going over bumps
What you are describing sounds like a failing CV joint. A CV (Constant Velocity) joint is a shaft that connects the transmission to the wheels, essentially transferring the power from the drive train directly to the wheels. The CV joint...
Question
Front end vibration
By rotating the tires, you may have brought tires from the back to the front which have "road force variation" which was not as apparent when the tires were in the rear. Note that even brand new tires can vibrate...

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