Originally posted by ZetecGL:
it's best to get everything changed in one job, that why you will be set for another 100,000 miles or so 
For the amount of added cost & time, it would be a good idea to replace a wear item like the water pump while you have access. You will NOT happy to tear the side of the engine down again 4 months later because you didn't take the opportunity to change out the WP.
It's just cheap insurance.
Must be that jumbly-wumbly thing happening again.
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