Couldn't get the link to work....But I'll trust whatever you say, seeing you have your own site about it!! I see now how the BCA works and which way the lever moves in boost mode. (Down when I throttle it, up when idling...) So what does the BCS do? Control the BCA? Because the BCA seems to be working correctly.
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The PCM commands the BCS to control the BCA based on gear selected, engine load, and various other parameters.
Think of the BCS as the go-between for the BCA and the Computer. |
So doesn't that mean the BCS is working, because the BCA is moving when you throttle it?
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When you remove that vacuum line from the top of the BCA and it moves FULLY, it means the BCA is CAPABLE of full travel/full boost if it's commanded to.
So now you move back to WHY it's not fully travelling when commanded. ;) |
Man, quick replies!! :D Sorry to still be confused, but doesn't the BCS TELL the BCA to move when I throttle it? SInce it's moving, isn't the BCS controlling it correctly? Or is that not how it works? Sorry to ask so many ??? about it.
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Do you understand duty cycle? The BCS is either OPEN or CLOSED. But it varies this by pulsing a duty cycle. This is how it VARIABLY controls the BCA.
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Aaahhhh...Variably....I didn't understand that part. Thanks for your help. I'm gonna get a BCS and let you know how I make out. Thanks! ;)
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Just a shot in the dark here, but have you tested the boost guage itself? Have you put a mechanical guage on the plenum to see what the pressure is when accelerating?
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Originally Posted by motorhead
Just a shot in the dark here, but have you tested the boost guage itself? Have you put a mechanical guage on the plenum to see what the pressure is when accelerating?
Let's stick to what we know are the most common failure modes. |
Ordered the BCS today, $28. I'll let you know when it comes in.
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