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Water Pump And Coolant Questions (2005 Corolla)

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The water pump of my 2005 Corolla leaks slowly. I would like to replace it.

To avoid coolant spill, I think I need to drain the coolant. Is draining from the radiator good enough? shall I drain from the engine block drain? My purpose is not to flush the coolant, just to avoid getting messy when I take off the water pump. How many liters of coolant is required for refilling in such a case?

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Radiator would suffice as the bottom of the radiator should be low enough to drain the system

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Hi,

One question you need to answer - what antifreeze have you got in now ?

Is it the original pink Toyota long life stuff or more standard blue ones ?

If your cars never had an antifreeze change, perhaps now if a good time to drain the whole lot and use all new ..

Some might also suggest flushing the heater matrix out as well as it seems matrix blockages are a problem many 2002 cars suffer from.If using concentrate antifreeze solution use deionised water to dilute it with, if your local water is hard

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Thanks to Steve and oldcodger for the quick replies.

My car is using the original pink (SLLC) coolant. I would prabably buy the same coolant from the dealer, because I don't know which coolant is the same formula and if they will react to each other when mixing.

I don't know where the heater matrix and how to flush it. Any more information?

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Hi,

This thread covers the heater matrix, though its a bit of a job.

http://www.toyotaown...showtopic=76133

Check the prices of the Toyota coolant, from what I have read, its dear and many wil say its only in 5ltr bottles though 1ltrs are there.

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After I replaced the water pump, the car shakes when I stop on traffic lights. What can be wrong? I have checked the coolant level and the temperature, all were fine.

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Hi,

Did you disconnect the Battery when replacing the water pump ?

If so, it could be the ECU re-learning, I had a similar problem when I replaced the Battery.

The tickover is all over the place, watch the rev meter.

After about 30 mins it usually corrects itself.

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I did disconnect the Battery when I replaced the water pump.

Now, after driving for about half an hour, the shaking disappeared.

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