Hi, my MK4 ALH is slowly driving me crazy. :D Please help
Engine feels like it has a flat spot at around 2200-3000rpm, but now always, and it isn't limp mode since there is still a bit of power so turbo is working, and also there are no codes stored. I already replaced N75, replaced all vacuum lines, actuator is not sticking, VNT vanes are not sticking, timing is spot on, intake manifold cleaned, EGR tuned off and I don't really know what to check next?
I also noticed that the warmer the weather the worst my problem gets, but sometimes when its raining or very damp outside, engine feels like full power again. :confused:
Only thing I can think of is, my actuator is slowly leaking vacuum. It goes from 21 in. Hg to 16 in. Hg in 30 seconds. Is this considered ok, or should I replace it? Could this be the cause? Or the next on my suspicion list are cracked fuel hoses, could fuel lines suck in so much air o drop performance?
Oh and it can't be MAF fault, since I got MAFless tune on my car.
Any advice appreciated, thanks.
Engine feels like it has a flat spot at around 2200-3000rpm, but now always, and it isn't limp mode since there is still a bit of power so turbo is working, and also there are no codes stored. I already replaced N75, replaced all vacuum lines, actuator is not sticking, VNT vanes are not sticking, timing is spot on, intake manifold cleaned, EGR tuned off and I don't really know what to check next?
I also noticed that the warmer the weather the worst my problem gets, but sometimes when its raining or very damp outside, engine feels like full power again. :confused:
Only thing I can think of is, my actuator is slowly leaking vacuum. It goes from 21 in. Hg to 16 in. Hg in 30 seconds. Is this considered ok, or should I replace it? Could this be the cause? Or the next on my suspicion list are cracked fuel hoses, could fuel lines suck in so much air o drop performance?
Oh and it can't be MAF fault, since I got MAFless tune on my car.
Any advice appreciated, thanks.
Occasional low power
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