No boost, need verification!
#11
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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.
#12
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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.
Think of the BCS as the go-between for the BCA and the Computer.
#14
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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'* commanded to.
So now you move back to WHY it'* not fully travelling when commanded.
So now you move back to WHY it'* not fully travelling when commanded.
#15
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Man, quick replies!! Sorry to still be confused, but doesn't the BCS TELL the BCA to move when I throttle it? SInce it'* moving, isn't the BCS controlling it correctly? Or is that not how it works? Sorry to ask so many ??? about it.
#18
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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?
#19
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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'* stick to what we know are the most common failure modes.