OK, here's what I discovered. I ordered a boost control valve from EEuroparts and they sent Part 55354158. When I opened it, it is part 12787706, identical to existing boost control valve part # on the car. I installed it today and the car ran perfect with boost for half an hour(vs the 5 mins it was running after disconnecting power and resetting. But then it lost boost again and then Check Engine light reappeared. I then checked out the Turbo Bypass Valve under the plastic cover in front of valve cover and discovered that is the identical valve with same part #12787706. I have another valve on the way so I'll have both replaced. If it goes into limp again after both are replaced, I guess that will point to the pricey compressor bypass valve. Have I missed anything? Would the computer throw it into limp mode if I only disconnected battery but didn't clear the code with a scope after replacing the boost control valve? Getting frustrated.
posted by 74.4.7...
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