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BMW 3-Series (E90 E92) Forum
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Air cold side diagram - 30ff intermittent code
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05-01-2024, 05:07 AM | #1 |
.******.
35
Rep 215
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Air cold side diagram - 30ff intermittent code
Does anyone have a line diagram for the engine cold side where the air box and charge pipe is? I have an intermittent 30ff code boost not meeting target. It happens randomly and the target would be 16.5 but it will only hit 13.5psi. Other times it gets 16.5-16.7psi.
I replaced the ofhg and disconnected three vacuum lines (#5,#6 and another going around the air box which I think goes to brake booster?) and the rear diverter valve. This has likely caused the issue and a diagram would help before I think of fixing a pinched intake manifold gasket. On realoem I could only find the hot side vacuum lines. |
05-06-2024, 03:04 PM | #4 |
.******.
35
Rep 215
Posts |
I think I left this unlocked. After turning it to the opposite position, the car has stopped throwing a 30ff shadow code. Don’t know why it works if all it does is route bypassed air back to intake.
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Appreciate
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