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I looked up scannerdanner and I have seen some of his videos on other subjects besides fuel trims and maf sensors. Good stuff.
I just watched a very interesting video in which he had a car that had similar symptoms to mine and it was a brake booster leak.
Then he showed the disconnect the maf test doesn’t work because he disconnected the MAF and it “fixed” the problem. That car was using MAP instead when maf disconnected (which isnt affected by vacuum leak). Boxsters don’t have MAP sensor correct? What is the computer’s strategy for when the MAF is disconnected?
I reread my posts and realized the way I measured the engine vacuum when I tested it was by removing the brake booster vacuum line. So if the booster is the problem, then I just happened to eliminate it from the system when I tested it!
Going to check into the brake booster before installing new MAF. Part should be here on Saturday.
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