Thread: What is it?
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Old Dec 3rd, 2020, 00:52   #12
rwdkev
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Quote:
Originally Posted by Laird Scooby View Post
Is it over-engineering or over-complicating?
We've come to expect the former with Volvo but you could argue it's also the latter Dave with the extra kit that's involved

Quote:
Originally Posted by Laird Scooby View Post
What's wrong with using manifold vacuum and a vacuum tank like every other manufacturer on the planet?
All of us with air conditioning on our Volvo's know that there's barely enough manifold vacuum to operate that system, more so if there's any leaks, when the engine is at high speed/high load eg. climbing a hill with wide open throttle. The cruise control system is self sufficient, I guess so that the required vacuum is available continuously for as much as required, regardless of engine speed/load and thus more reliable as an overall system.
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