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Volvo C30 Frequently Asked Questions 2006-2013

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FAQs from the forum




Charging System

[Volvo C30]

Question: I have a new battery and alternator but still not keeping my battery charged.

Answer: First check to be sure the alternator belt is not too loose. If so, it will slip and reduce the voltage coming from the alternator.
About 1/4 inch to 1/2 inch of play should be about right when you push down on the alternator belt.
And you should not hear any squealing from the belt while the car is running.

Next, check the battery cables for corrosion.
If they are old, they could have corrosion that has worked it's way up under the outer covering.
If so, you may not be getting enough voltage to the battery.

Use a battery charger to get a full charge on the battery.
Start the car and use a volt meter on the battery terminals to check the voltage coming from the alternator.
It should read close to or just above 13.5 volts. If not, you may need new battery cables.

Finally, if the voltage is correct, then there is a power drain from something that is running or there is a dead short somewhere.
You will just have to listen and look carefully for the source.

See more about this topic at Volvo 240, Volvo 260 Forum


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Engine Surges randomly

[Volvo C30]

Engine surges randomly

Your Volvo may surge randomly.
Can be caused by a faulty engine temperature sensor.
On some Volvo cars it is located on the intake side of the engine near the firewall.
It is a good idea to flush the cooling system and add new coolant.

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Turbocharger Maintenance

[Volvo C30]

Turbo Charger Maintenance

Turbochargers eventually fail due to wear.

The tubo is lubricated with oil from the engine.
If you keep your oil changed regularly, you can
extend the life of the turbo.

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[Volvo C30]

Turbochargers get VERY hot: not only are they driven by the flow of hot exhaust gas and the internal turbine can spin as fast as 100k RPM!
Warm-up isn't much of a problem: once you have adequate oil pressure, you can start driving.
Warm-DOWN, though, can be especially important for older cars. If you turn the engine off as soon as you reach your destination
the oil inside theturbocharger could burn, creating a thin coating on the inside of the turbo.
Eventually, this layer can build up enough to cause the turbocharger to be starved of oil, and fail.
In fact, some manufacturers have started installing pumps that continue to push the oil through the turbocharger for a few minutes
after the car has been turned off.
Also, you might consider switching to synthetic oil, since it may be better at keeping its nominal viscosity,
and burns at a significantly higher temperature than standard oil.


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